Epson SED1278F/D Specifiche

SED1200 SeriesLCD Controller/DriversTechnical ManualMF423-07

EPSON 2–3SED1200 SeriesSED1200SeriesPINOUT64 60 55 50 45 4116570758040353025510(TOP VIEW)SED1200F Package Outline15 20 2420 15 10 5 145 50SED1200D Die

SED1220EPSON 4–35SED1220(2) MPU Bus Write Timing (68 series)Item Signal SymbolMeasuringMin. Max. UnitconditionAddress setup time A0, CS tAW6 Every tim

4–36 EPSONSED1220(3) Serial InterfacetCSStCSHtSAStSAHtSLWtSCYCtSHWtSDStSDHCSA0SCLSI*1: For the rise and fall of an input signal (tr and tf), set a val

SED1220EPSON 4–37SED1220MPU INTERFACE (REFERENCE EXAMPLES)The SED1220 Series can be connected to the 80 series MPU and 68 series MPU. When an serial

4–38 EPSONSED1220INTERFACE TO LCD CELLS (REFERENCE)12 columns by 3 lines, 5 × 8-dot matrix segments and symbols112SED 1220LCD panelstatic iconsymbolch

SED1220EPSON 4–39SED122012 columns by 2 lines, 5 × 8-dot matrix segments and symbols112SED 1221LCD panelstatic iconsymbolcharactersignal signalCOMS1CO

4–40 EPSONSED122012 columns by 2 lines, 5 × 8-dot matrix segments and symbols1• • • • • • • • • • • • • •12SED 1222LCD panelstatic iconsymbolcharacter

SED1220EPSON 4–41SED12201• • • • • • • • • • • • • •• •• •12SED 122ALCD PanelStatic iconSymbolSignal SignalCharacterCOMS1COMSASEGSASEGSJCOMS2COM123456

4–42 EPSONSED1220LIQUID CRYSTAL DRIVE WAVEFORMS (B WAVEFORMS)COM 1COM 2COM 3COM 4COM 5COM 6COM 7COM 8COM 9COM 10COM 11COM 12COM 13COM 14COM 15COM 16SE

SED1220EPSON 4–43SED1220Instruction Setup Example(Reference Only)(1) Initial setupVDD-VSS power ONPower regulationInput of reset signalWaiting for 10

4–44 EPSONSED1220(3-1) Selecting the Standby mode (3-2) Releasing the Standby modeEnd of initializationNormal operation(Power Save is released andosci

2–4 EPSONSED1200 SeriesTABLE 1. SED1200 PinoutNo. NAME1 SEG172 SEG163 SEG154 SEG145 SEG136 SEG127 SEG118 SEG109 SEG910 SEG811 SEG712 SEG613 SEG514 S

SED1220EPSON 4–45SED1220Instruction Setup Example of SED1220 series(1) Initial setup(2) display ON “EPSON”(3) Display ON the Icon(4) Standby Mode sequ

4–46 EPSONSED1220(1) Initial setup(1.1) VDD–VSS Power ON(1.2) Power regulation(1.3) Input of RESET signal(1.4) Command Status• Display ON/OFF :OFF• Po

SED1220EPSON 4–47SED1220• Data writing: All data→20H (for 1 Line)• RAM address setup: Set address is 40H• Data writing: All data→20H (for 2 line)• RAM

4–48 EPSONSED1220• Data writing: All data →20H (for 3 Line)• End of Initialization(2) Display ON “EPSON”(2.1) RAM address setup command: 30H(2.2) Data

SED1220EPSON 4–49SED1220(3) Display ON The Icon: Valid in Standby mode only(3.1) Display ON/OFF command: D→OFF(3.2) Static display control command: 1

4–50 EPSONSED1220Option ListSED1220 provides the optional functions as described inthe following. Being adaptable to the customer’s optionaldemand, co

SED1225 SeriesLCD Controller/DriversTechnical Manual

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EPSON 5–1SED1225 SeriesSED1225SeriesOUTLINEThe SED1225 dot-matrix LCD Controller Driver receives4-bit, 8-bit, or serial data from the microprocessor a

5–2 EPSONSED1225 SeriesBLOCK DIAGRAMCGROMCGRAMCursorControlCOM1 to 24COMS1,2SEG1 to 60SEGS1,2,4,5COMSASEGSA to JXLE1 XLE2VS1XCKOCAOCBOCCOCDOCED0D1D2D3

EPSON 2–5SED1200 SeriesSED1200SeriesPIN DESCRIPTIONCPU InterfaceCS Active low chip select input.RD Active low read enable input.WR Active low write st

EPSON 5–3SED1225 SeriesSED1225SeriesPIN ASSIGNMENTSED1225D✽✽↑CGROM pattern version numberChip size: 7.85 × 1.97 mmPad pitch: 90 µm (min)Chip thickness

5–4 EPSONSED1225 SeriesPad coordinates (1/2)1 Dummy -3768 -8222 Dummy -3678 -8223 A0 -3349 -8224 XWR(E) -3200 -8225 XCS -3050 -8226 D7(SI) -2901 -8227

EPSON 5–5SED1225 SeriesSED1225SeriesPad coordinates (2/2)87 SEG11 2333 82288 SEG12 2243 82289 SEG13 2153 82290 SEG14 2064 82291 SEG15 1974 82292 SEG16

5–6 EPSONSED1225 SeriesPIN DESCRIPTIONPower Supply PinsNotes: Two VSS pins are provided. As they are commonly connected inside the IC, an input into

EPSON 5–7SED1225 SeriesSED1225SeriesSystem Bus Connector PinsPin Name I/O Descrition No. of PinsAn 8-bit input data bus to be connected to the standar

5–8 EPSONSED1225 SeriesLCD Driver SignalsDynamic drive pinsNote: As the same COMS1 signal is output at two pins, one of them must be used.Static drive

EPSON 5–9SED1225 SeriesSED1225SeriesFUNCTION DESCRIPTIONMPU InterfacesInterface type selectionThe SED1225 can transfer data via the 4- or 8-bit data b

5–10 EPSONSED1225 SeriesFigure 1Data bus signal identificationThe SED1225 identifies the data bus based on acombination of A0, AWR and E signals as de

EPSON 5–11SED1225 SeriesSED1225SeriesVoltage regulator• Voltage regulator using the electronic control functionUse the electronic control function and

5–12 EPSONSED1225 SeriesReset CircuitWhen the RES input is made active, this LSI is initialized.• Initialization status(1)Display ON/OFF controlC=0: C

2–6 EPSONSED1200 SeriesWrite CommandsSET CURSOR DIRECTIONSets the way in which the cursor address register changesas character data is written to the

EPSON 5–13SED1225 SeriesSED1225SeriesThe following provides the relationship between the Cand B registers and cursor display.(C, B) = (0, 0) (1, 0) (1

5–14 EPSONSED1225 SeriesThe character on the 3rd line will be displayed indouble size on the second and third lines bysetting DC=1.(2) N=1 (1/18 duty)

EPSON 5–15SED1225 SeriesSED1225Series(4) Horizontal vertical flipping. . . . .. . .COM1COM16 (N=1)COM24 (N=0)SEG1 SEG60(6) RAM Address SetupThe RAM Ad

5–16 EPSONSED1225 SeriesTable 4 SED1225 command listCommandCodeFunctionA0 XWR D7 D6 D5 D4 D3 D2 D1 D0(1) Cursor Home 0 0 0 0 0 1 ✽✽✽✽ Shifts the cur

EPSON 5–17SED1225 SeriesSED1225SeriesBUILT-IN MEMORIESCharacter Generator ROM (CGROM)The SED1225 contains up to 126 types of CGROMs.Each character has

5–18 EPSONSED1225 SeriesTable 5 SED1225DABLower 4 Bit of Code0123456789ABCDEF0123456789ABCDEFHigher 4 Bit of Cord

EPSON 5–19SED1225 SeriesSED1225SeriesTable 6 SED1225DBBLower 4 Bit of Code0123456789ABCDEF0123456789ABCDEFHigher 4 Bit of Cord

5–20 EPSONSED1225 SeriesTable 7 SED1225DGBLower 4 Bit of Code0123456789ABCDEF0123456789ABCDEFHigher 4 Bit of Cord

EPSON 5–21SED1225 SeriesSED1225SeriesCharacter Generator RAM (CGRAM)The SED1225 has a built-in CGRAM to program user-defined character patterns for hi

5–22 EPSONSED1225 SeriesSymbol RegisterThe SED1225 has a built-in Symbol register to allowseparate symbol setup on the display panel.The Symbol regist

EPSON 2–7SED1200 SeriesSED1200SeriesSET CHARACTER CODEWrites the character code given by C7–C0 into thecharacter data RAM at the location pointed to b

EPSON 5–23SED1225 SeriesSED1225SeriesStatic Icon RAMThe SED1225 has a built-in Static Icon RAM to displaya static icon separately from the dynamic ico

5–24 EPSONSED1225 SeriesLED RAM (Register)The SED1225 has the LED drive functions to drive theLCD by controlling the XLE1 and XLE2 pins.The following

EPSON 5–25SED1225 SeriesSED1225SeriesMAXIMUM ABSOLUTE RATINGSNotes: 1. All voltages are referenced to VDD=0 V.2. The following voltage levels must alw

5–26 EPSONSED1225 SeriesDC CHARACTERISTICSDynamic system:Amp outputV5 Ta = 25°C (during 1/4 bias)4 ×Vvoltage VREG2ReferenceVREG2Ta = 25°C (during 1/4

EPSON 5–27SED1225 SeriesSED1225Series*1 Although the wide operating character range is guaranteed, a quick and excessive voltage variation may not beg

5–28 EPSONSED1225 SeriesSIGNAL TIMING CHARACTERISTICS(1) MPU bus write timing (80 series)*1 The input signal rise and fall times (tr, tf) are defined

EPSON 5–29SED1225 SeriesSED1225Series(2) MPU bus write timing (68 series)*1 The input signal rise and fall times (tr, tf) are defined to be 25 nsec ma

5–30 EPSONSED1225 Series(3) Serial interface*1 The input signal rise and fall times (tr, tf) are defined to be 25 nsec max (except for RES input).tCSS

EPSON 5–31SED1225 SeriesSED1225SeriesMPU INTERFACES (REFERENCE)The SED1225 can be connected to the 80-series or 68-series MPU. Also, it can operate w

5–32 EPSONSED1225 Series1 12 columnsSED 1225LCD panelStatic IconSymbols SymbolsCharacterSignals SignalsCOMS1COMSASEGSASEGSJCOMS2COM12345678COM17SEGS2S

2–8 EPSONSED1200 SeriesElectrical SpecificationsDC CharacteristicsVDD = 5 VVSS = 0 V, Ta = –10 to +70°CParameter Symbol ConditionRatingUnit Pinmin typ

EPSON 5–33SED1225 SeriesSED1225Series12 columns by 2 lines (N=1), 5×8 dots + SymbolsSED 1225LCD panelStatic iconSignalCharacterSignalSymbol12 columns1

5–34 EPSONSED1225 SeriesCOM 1COM 2COM 3COM 4COM 5COM 6COM 7COM 8COM 9COM 10COM 11COM 12COM 13COM 14COM 15COM 16SEG 1SEG 5SEG 2SEG 3SEG 4COM1 - SEG 2 V

EPSON 5–35SED1225 SeriesSED1225SeriesVDD-VSS power onPower stableReset inputWait for 10 microseconds or more.End of initializationWait for 20 microsec

5–36 EPSONSED1225 SeriesDisplay ModeEnd of initializationRAM address set inputRAM (data) write inputDisplay the written contents.Standby Mode(1) Setti

EPSON 5–37SED1225 SeriesSED1225SeriesSleep Mode(1) Setting the Sleep mode.End of initializationStarts the sleep mode.Normal operation(Power save is cl

5–38 EPSONSED1225 SeriesOPTION LISTThe SED 1225 has the following options. Options areavailable exclusively for users. Please contact our SalesDepar

EPSON 5–39SED1225 SeriesSED1225SeriesCAUTIONSThe following points should be noted when this Development Specification is used:1. This Development Spec

SED1230 SeriesLCD Controller/DriversTechnical Manual

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SED1230SeriesEPSON 6–1SED1230 Series• CR oscillation circuit (on-chip C and R)• High-speed MPU interfaceInterfacing with both 68 series and 80series M

EPSON 2–9SED1200 SeriesSED1200SeriesVDD = 3 VVSS = 0 V, Ta = –10 to 70°CParameter Symbol ConditionRatingUnit Pinmin typ maxLogic supply voltage VDD 2.

6–2 EPSONSED1230 SeriesBLOCK DIAGRAMD6 (SCL)Input bufferMPU interfaceAddress counterCommanddecoderCursor controlSEG driving circuit COM driving circui

SED1230SeriesEPSON 6–3SED1230 SeriesSED1230 SERIES, CHIP SPECIFICATIONSED1230D**1/30 duty 12 columns + 1 signal columnSED1231D**1/23 duty 12 columns +

6–4 EPSONSED1230 SeriesPAD COORDINATESNo. Name X Y<SED1230D**>Unit: µm1 (NC) –4793 –13712 –46833 –45724 –44625VDD –42426 –41327 –40218 –39119VS

SED1230SeriesEPSON 6–5SED1230 SeriesPAD COORDINATESNo. Name X Y109 SEG10 2253 –1382110 SEG11 2143111 SEG12 2033112 SEG13 1923113 SEG14 1813114 SEG15 1

6–6 EPSONSED1230 SeriesPAD COORDINATESNo. Name X Y<SED1231D**>Unit: µm1 (NC) –4793 –13712 –46833 –45724 –44625VDD –42426 –41327 –40218 –39119VS

SED1230SeriesEPSON 6–7SED1230 SeriesPAD COORDINATESNo. Name X Y109 SEG10 2253 1382110 SEG11 2143111 SEG12 2033112 SEG13 1923113 SEG14 1813114 SEG15 17

6–8 EPSONSED1230 SeriesPAD COORDINATESNo. Name X Y<SED1232D**>Unit: µm1 (NC) –4793 –13712 –46833 –45724 –44625VDD –42426 –41327 –40218 –39119VS

SED1230SeriesEPSON 6–9SED1230 SeriesPAD COORDINATESNo. Name X Y109 SEG10 2253 1382110 SEG11 2143111 SEG12 2033112 SEG13 1923113 SEG14 1813114 SEG15 17

6–10 EPSONSED1230 SeriesPAD COORDINATESNo. Name X Y<SED1233D**>Unit: µm1 (NC) –4793 –13712 –46833 –45724 –44625VDD –42426 –41327 –40218 –39119V

SED1230SeriesEPSON 6–11SED1230 SeriesPAD COORDINATESNo. Name X Y109 SEG20 2253 1382110 SEG21 2143111 SEG22 2033112 SEG23 1923113 SEG24 1813114 SEG25 1

2–10 EPSONSED1200 SeriesAC CharacteristicsMPU Read TimingA0tARtRAtCRtRCtRPtRDtftrtRHBusy flag2.4V2.0V0.4V0.8VDB3(A0, CS, RD, φ)CSRDVDD = 4.5 to 5.5 V,

6–12 EPSONSED1230 SeriesDESCRIPTION OF PINSPower PinsLCD Power Circuit PinsPin name I/O Description Q’tyVDDPower supplyLogic + power pin. Also used a

SED1230SeriesEPSON 6–13SED1230 SeriesPin name I/O Description Q’tyD7 (SI) I 8-bit input data bus. These pins are connected to a 8-bit or 16-bit 8D6 (

6–14 EPSONSED1230 SeriesPin name I/O Description Q’tyCOM1~O Common signal output pin (for characters) 28COM28Common signal output pin (except for char

SED1230SeriesEPSON 6–15SED1230 SeriesFUNCTIONAL DESCRIPTIONMPU InterfaceSelection of interface typeIn the SED1230 Series, data transfer is performed t

6–16 EPSONSED1230 SeriesBoosting Voltage regulat- Voltage External Boostingcircuit ing circuit follower voltage input system pin●● ●● ●● —× ●● ●● VOUT

SED1230SeriesEPSON 6–17SED1230 SeriesTriple boosting circuitWhen a capacitor is connected between CAP1+ andCAP1-, between CAP2+ and CAP2-, and between

6–18 EPSONSED1230 Series● Voltage Regulation Circuit Using Electronic ContrastControl RegisterThe contrast control register controls the liquid crysta

SED1230SeriesEPSON 6–19SED1230 SeriesWhen a built-in power supply is usedUnder a triple boosting The diagram under a double boostingWhen an external p

6–20 EPSONSED1230 SeriesLow Power Consumption ModeThe SED1230 Series is provided with the standby modeand sleep mode with the object of low power cons

SED1230SeriesEPSON 6–21SED1230 SeriesCOMMANDSTable 4 shows a command list. In the SED1230 Series,each data bus signal is identified by a combination

EPSON 2–11SED1200 SeriesSED1200SeriesVDD = 2.5 to 4.5 V, Ta = –10 to 70°C.Note: Load on pin DB3 is CL = 100 pF.MPU Write TimingtCWA0CSDB0 to DB3WRWRCy

6–22 EPSONSED1230 Series(4) Power SaveThis command is used to control the oscillatingcircuit and set and reset the standby mode or sleepmode.PS = 0 :

SED1230SeriesEPSON 6–23SED1230 SeriesRAM Map (SED1230, SED1231, SED1232)0123456789ABCDEF0 0 H C G R A M ( 0 0 H ) – C G R A M ( 0 1 H )

6–24 EPSONSED1230 SeriesTable 4 SED1230 Series Command List CommandCodeFunctionA0 WR D7 D6 D5 D4 D3 D2 D1 D0(1) Cursor Home 000001****Moves the curso

SED1230SeriesEPSON 6–25SED1230 SeriesCHARACTER GENERATORCharacter Generator ROM (CG ROM)The SED1230 Series is provided with a character genera-tor ROM

6–26 EPSONSED1230 SeriesSED123*DA*Table 5Lower 4 Bit of Code0123456789ABCDEF0123456789ABCDEFHigher 4 Bit of Cord

SED1230SeriesEPSON 6–27SED1230 SeriesSED123*DB*Lower 4 Bit of Code0123456789ABCDEF0123456789ABCDEFHigher 4 Bit of Cord

6–28 EPSONSED1230 SeriesSED123*DG*Lower 4 Bit of Code0123456789ABCDEF0123456789ABCDEFHigher 4 Bit of Cord

SED1230SeriesEPSON 6–29SED1230 SeriesCharacter Generator RAM (CG RAM)The SED1230 Series is provided with a CG RAM that permits user-programming charac

6–30 EPSONSED1230 SeriesSymbol RegisterThe SED1230 Series is provided with a symbol register that permits displaying each symbol so that symbol displa

SED1230SeriesEPSON 6–31SED1230 Series25 26121SEG2 SEG427 28342SEG7 SEG963 6431 32ESEG77 SEG79COMS2COMS3Symbol(2) SED1233Symbol BitsRAM addressD7 D6 D

2–12 EPSONSED1200 SeriesVDD = 5 V, Ta = –10 to 70°C.VDD = 3 V, Ta = –10 to 70°C.Parameter SymbolRatingUnitmin typ maxA0 → WR setup time tAW 0——nsCS →

6–32 EPSONSED1230 Series(VCC) VDD(GND) VSSVDDV5ABSOLUTE MAXIMUM RATINGSNotes: 1. All the voltage values are based on VDD = 0 V.2. For voltages of V1,

SED1230SeriesEPSON 6–33SED1230 SeriesDC CHARACTERISTICSVDD = 0 V, VSS = –3.6 V to –2.4 V, Ta = –30 to 85°C unless otherwise specified.Reset time tR 1.

6–34 EPSONSED1230 Series*5: Character “ ” display. This is applicable to thecase where no access is made from the MPU and thebuilt-in power circuit

SED1230SeriesEPSON 6–35SED1230 SeriesTIMING CHARACTERISTICS(1) System Bus Write Characteristic I (80 series MPU)*1: For the rise and fall of an input

6–36 EPSONSED1230 Series(2) System Bus Write Characteristic II (68 series MPU)*1:tCYC6 denotes the cycle of the E signal in the CS active state. tCYC

SED1230SeriesEPSON 6–37SED1230 Series(3) Serial Interface*1: For the rise and fall of an input signal, set a value not exceeding 25 ns.*2: Every timi

6–38 EPSONSED1230 SeriesMPU INTERFACE (REFERENCE EXAMPLES)The SED1230 Series can be connected to the 80 series MPU and 68 series MPU. When an serial

SED1230SeriesEPSON 6–39SED1230 SeriesINTERFACE TO LCD CELLS (REFERENCE)12 columns by 2 lines, 5 × 7-dot matrix segments and symbols System SetupN2 N1

6–40 EPSONSED1230 SeriesLIQUID CRYSTAL DRIVE WAVEFORMS (B WAVEFORMS)COM 1COM 2COM 3COM 4COM 5COM 6COM 7COM 8COM 9COM 10COM 11COM 12COM 13COM 14SEG 1SE

SED1230SeriesEPSON 6–41SED1230 SeriesInstruction Setup Example (Reference Only)(1) Initial setupVDD-VSS power ONPower regulationInput of reset signalC

NOTICENo parts of this material may be reproduced or duplicated in any form or by any means without the writtenpermission of Seiko Epson. Seiko Epson

EPSON 2–13SED1200 SeriesSED1200SeriesOPERATIONData Input/OutputBecause the command codes are 8-bits wide and theSED1200’s data bus is only 4-bits wide

6–42 EPSONSED1230 Series(3-1) Selecting the Standby modeEnd of initializationNormal operation(Power Save is released andoscillator circuit is turned O

SED1234/35 SeriesLCD Controller/DriversTechnical Manual

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EPSON 7–1SED1234/35 SeriesSED1234/35Series• CR oscillation circuit (on-chip C and R)• High-speed MPU interfaceInterfacing with both 68 series and 80se

7–2 EPSONSED1234/35 SeriesBLOCK DIAGRAMInput bufferMPU interfaceAddress counterCommanddecoderCursor controlSEG driving circuit COM driving circuitRefr

EPSON 7–3SED1234/35 SeriesSED1234/35SeriesSED1234/35 SERIES, CHIP SPECIFICATIONSED1234D**1/30 dutySED1235D**1/16 duty#1 Column for CG ROM pattern chan

7–4 EPSONSED1234/35 SeriesPAD COORDINATESNo. Name X Y<SED1234D**> (1/2)Unit: µmPAD COORDINATESNo. Name X Y55 SEG15 2106 140656 SEG16 197957 SEG

EPSON 7–5SED1234/35 SeriesSED1234/35Series<SED1234D**> (2/2)PAD COORDINATESNo. Name X Y109 COM21 –4933 1405110 COM20 –4964 1094111 COM19 966112

7–6 EPSONSED1234/35 Series1VDD –4077 –13712VSS –35263V5 –29754V4 –24245V3 –18556V2 –12877V1 –7198V0 –1519VR 40010 VOUT 96811 CAP2– 151912 CAP2+ 207013

EPSON 7–7SED1234/35 SeriesSED1234/35Series109 COM14 –4933 1405110 COM13 –4964 1094111 COM12 966112 COM11 839113 COM10 712114 COM9 584115 COM8 457116 C

2–14 EPSONSED1200 SeriesLoading CGRAMThe character generator RAM is loaded with a characterbit pattern using a combination of one SET CGRAMADDRESS com

7–8 EPSONSED1234/35 SeriesDESCRIPTION OF PINSPower PinsPin name I/O Description Q’tyVDDPower supplyLogic + power pin. Also used as MPU power pin VCC.

EPSON 7–9SED1234/35 SeriesSED1234/35SeriesPin name I/O Description Q’tyD7 (SI) I 8-bit input data bus. These pins are connected to a 8-bit or 16-bit

7–10 EPSONSED1234/35 SeriesLiquid Crystal Drive Circuit SignalsSED1234SED1235Pin name I/O Description Q’tyCOM1~OCommon signal output pin (for characte

EPSON 7–11SED1234/35 SeriesSED1234/35SeriesFUNCTIONAL DESCRIPTIONMPU InterfaceSelection of interface typeIn the SED1234, SED1235, data transfer is per

7–12 EPSONSED1234/35 SeriesFig. 1Identification of data bus signalsThe SED1234, SED1235 series identifies data bus signals, as shown in Table 3, by co

EPSON 7–13SED1234/35 SeriesSED1234/35SeriesTriple boosting circuitWhen a capacitor is connected between CAP1+ andCAP1-, between CAP2+ and CAP2-, and b

7–14 EPSONSED1234/35 Series● Voltage Regulation Circuit Using Electronic ContrastControl RegisterThe contrast control register controls the liquid cry

EPSON 7–15SED1234/35 SeriesSED1234/35SeriesLiquid crystal voltage generating circuitThe V5 potential is resistance-divided inside the IC sothat V1, V2

7–16 EPSONSED1234/35 SeriesLow Power Consumption ModeThe SED1234, SED1235 Series is provided with thestandby mode and sleep mode with the object of lo

EPSON 7–17SED1234/35 SeriesSED1234/35SeriesCOMMANDSTable 4 shows a command list. In the SED1230 Series,each data bus signal is identified by a combin

EPSON 2–15SED1200 SeriesSED1200SeriesMechanical SpecificationsSED1200F Package Dimensions0.992±0.016(25.2±0.4)0.551±0.004(14.0±0.1)0.006±0.002(0.15±0.

7–18 EPSONSED1234/35 Seriesthereby adjusting the gradation of liquid crystaldisplay.When data is set in the 4-bit register, the liquidcrystal driving

EPSON 7–19SED1234/35 SeriesSED1234/35Series(8) Data Write1This command writes data into the DD RAM, CGRAM or symbol register.2After this command is ex

7–20 EPSONSED1234/35 SeriesTable 4 SED1234/SED1235 Command ListCommandCodeFunctionA0WR D7 D6 D5 D4 D3 D2 D1 D0Moves the cursor to the home position.S

EPSON 7–21SED1234/35 SeriesSED1234/35SeriesCHARACTER GENERATORCharacter Generator ROM (CG ROM)The SED1234/1235 is provided with a character genera-tor

7–22 EPSONSED1234/35 SeriesTable 5SED123*DA*Lower 4 Bit of Code0123456789ABCDEF0123456789ABCDEFHigher 4 Bit of Cord

EPSON 7–23SED1234/35 SeriesSED1234/35SeriesSED123*DB*Lower 4 Bit of Code0123456789ABCDEF0123456789ABCDEFHigher 4 Bit of Cord

7–24 EPSONSED1234/35 SeriesSED123*DG*Lower 4 Bit of Code0123456789ABCDEF0123456789ABCDEFHigher 4 Bit of Cord

EPSON 7–25SED1234/35 SeriesSED1234/35SeriesCharacter Generator RAM (CG RAM)The SED1230 Series is provided with a CG RAM that permits user-programming

7–26 EPSONSED1234/35 SeriesSymbol RegisterThe SED1234, 1235 provided with a symbol register that permits displaying each symbol so that symbol display

EPSON 7–27SED1234/35 SeriesSED1234/35SeriesABSOLUTE MAXIMUM RATINGSItem Symbol Standard value UnitPower supply voltage (1) VSS –6.0~+0.3 VPower supply

2–16 EPSONSED1200 SeriesPadX (µm) Y (µm)Number Name1 SEG17 2123 15522 SEG16 1932 15523 SEG15 1742 15524 SEG14 1551 15525 SEG13 1361 15526 SEG12 1170 1

7–28 EPSONSED1234/35 SeriesInput voltage VSS –3.6 –2.4 V *10Booster output voltage VOUT Double boosting state –7.2 V VOUTTriple boosting state –10.8Vo

EPSON 7–29SED1234/35 SeriesSED1234/35SeriesPower SupplytRESVDDVSSVDDVSS–2.4 VtRWtRRESAll signal timings are based on 20% and 80% of VSS signals.*6: Th

7–30 EPSONSED1234/35 SeriesTIMING CHARACTERISTICS(1) System Bus Write Characteristic I (80 series MPU)*1: For the rise and fall of an input signal, se

EPSON 7–31SED1234/35 SeriesSED1234/35Series(2) System Bus Write Characteristic II (68 series MPU)*1:tCYC6 denotes the cycle of the E signal in the CS

7–32 EPSONSED1234/35 SeriesItem Signal SymbolMeasuringMin. Max. UnitconditionSystem clock cycle SCL tSCYC VSS = –3.0 700 ns–2.7 800 ns–2.4 1000 nsSCL

EPSON 7–33SED1234/35 SeriesSED1234/35SeriesMPU INTERFACE (REFERENCE EXAMPLES)The SED1234, 1235 can be connected to the 80 series MPU and 68 series MPU

7–34 EPSONSED1234/35 SeriesINTERFACE TO LCD CELLS (REFERENCE)12 columns by 2 lines, 5×7-dot matrix segments and symbols System SetupN2 N1001• • • • •

EPSON 7–35SED1234/35 SeriesSED1234/35SeriesLIQUID CRYSTAL DRIVE WAVEFORMS (B WAVEFORMS)COM 1COM 2COM 3COM 4COM 5COM 6COM 7COM 8COM 9COM 10COM 11COM 12

7–36 EPSONSED1234/35 SeriesInstruction Setup Example (Reference Only)(1) Initial setup(Note 1)(Note 1)VDD-VSS power ONPower regulationInput of reset s

EPSON 7–37SED1234/35 SeriesSED1234/35Series(3-1) Selecting the Standby mode(3-2) Releasing the Standby modeNote 2: Commands (1) and (2) can be entered

EPSON 2–17SED1200 SeriesSED1200SeriesAPPLICATION NOTESDisplay OscillatorThe SED1200 has an internal oscillator to generate thetiming signals required

SED1240 SeriesLCD Controller/DriversTechnical Manual

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EPSON 8–1SED1240 SeriesSED1240SeriesOVERVIEWThe SED1240 Series is a character display dot matrixLCD controller driver. This driver can display up to

8–2 EPSONSED1240 SeriesBLOCK DIAGRAMInput bufferMPU interfaceIR register(extendedregister)AddresscounterDDRAMsymbolregisterRefreshaddresscounterTiming

EPSON 8–3SED1240 SeriesSED1240SeriesCHIP SPECIFICATIONSSED124****Digits for CGROM pattern changeNumber of display lines 0: 4-line display 1: 3-lin

8–4 EPSONSED1240 Series<Pad Coordinates> SED1240***1 NC [B TYPE] –4191 –12502 NC [C TYPE] –3941 –12373 NC [C TYPE] –38364 NC [C TYPE] –35555 A0

EPSON 8–5SED1240 SeriesSED1240Series109 SEG7 [A TYPE] 3009 1240110 SEG8 [A TYPE] 2919111 SEG9 [A TYPE] 2830112 SEG10 [A TYPE] 2740113 SEG11 [A TYPE] 2

8–6 EPSONSED1240 Series<Pad coordinates> SED1241***1 NC [B TYPE] –4191 –12502 NC [C TYPE] –3941 –12373 NC [C TYPE] –38364 NC [C TYPE] –35555 A0

EPSON 8–7SED1240 SeriesSED1240Series109 SEG7 [A TYPE] 3009 1240110 SEG8 [A TYPE] 2919111 SEG9 [A TYPE] 2830112 SEG10 [A TYPE] 2740113 SEG11 [A TYPE] 2

8–8 EPSONSED1240 Series1 NC [B TYPE] –4191 –12502 NC [C TYPE] –3941 –12373 NC [C TYPE] –38364 NC [C TYPE] –35555 A0 [C TYPE] –34036 WR [C TYPE] –32837

2–18 EPSONSED1200 SeriesCommand Clock (Φ)When the system MPU issues a command to the SED1200,the timing for the execution of the command is derivedfro

EPSON 8–9SED1240 SeriesSED1240Series109 SEG7 [A TYPE] 3009 1240110 SEG8 [A TYPE] 2919111 SEG9 [A TYPE] 2830112 SEG10 [A TYPE] 2740113 SEG11 [A TYPE] 2

8–10 EPSONSED1240 SeriesDESCRIPTION OF PINSPower PinsLCD Power Circuit PinsPin name I/O Description Q’tyCAP1+ O Boosting condenser positive side conne

EPSON 8–11SED1240 SeriesSED1240SeriesSystem Bus Connecting PinsPin name I/O Description Q’tyD7 (SI) I 8-bit input data bus which is connected to the 1

8–12 EPSONSED1240 SeriesLiquid Crystal Drive Circuit SignalsDynamic Drive Pins [SED1240]Pin name I/O Description Q’tyCOM1 toO Common signal output pin

EPSON 8–13SED1240 SeriesSED1240SeriesDESCRIPTION OF FUNCTIONSMPU InterfacesIn the SED1240 series, an MPU type, interface bit length and interface meth

8–14 EPSONSED1240 SeriesFig. 1 shows a timing chart of the serial interface. In case of the SCL signal, extreme care should be taken about terminalre

EPSON 8–15SED1240 SeriesSED1240SeriesBoosting circuitThe SED1240 series is provided with a boosting circuitfor triple boosting and double boosting for

8–16 EPSONSED1240 SeriesVoltage regulating circuitThe boosting voltage generated at VOUT is output as aliquid crystal drive voltage of V5 through the

EPSON 8–17SED1240 SeriesSED1240Series[When using the V5 voltage regulating built-in resistor (Use of V5 voltage regulating built-in resistor is set by

8–18 EPSONSED1240 Series• Voltage regulating circuit using the electronic volumefunctionWhen the electronic volume function is used, theliquid crystal

EPSON 2–19SED1200 SeriesSED1200Series• LCD Drive Waveform – 1 Line Display (1/8 Duty Cycle)COM 12345678SEG1 2 3 4 5Frame signalCOM1COM2COM3COM8SEG1SEG

EPSON 8–19SED1240 SeriesSED1240SeriesLiquid crystal voltage generating circuitThe V5 potential is resistance-divided by the built-inresistor of the IC

8–20 EPSONSED1240 Series2 Using only the voltage regulating circuit and the voltage follower.CAP1+CAP1–VOUTV5VDD, V0C2C2C2C2C2V1V2V3V4V5VS1VRVSSVSS2SE

EPSON 8–21SED1240 SeriesSED1240SeriesHigh power modeThe power circuit built-in the SED1240 series is a lowpower consumption type. (when the high power

8–22 EPSONSED1240 Seriespulses at least for 10 µs as described in DC Characteristics.The ordinary operation will be started in 1 µs or moreafter the r

EPSON 8–23SED1240 SeriesSED1240SeriesTable 8 SED1240 Series Command TableCommandCodeFunctionRE A0 WR D7 D6 D5 D4 D3 D2 D1 D0(1) Cursor 0 0 0 0 0 0 1

8–24 EPSONSED1240 SeriesCommandCodeFunctionRE A0 WR D7 D6 D5 D4 D3 D2 D1 D0(3) Display 0/1 0 0 0 0 1 1 C B RE D Sets cursor ON/OFF, cursor blink ON/OF

EPSON 8–25SED1240 SeriesSED1240SeriesCommandCodeFunctionRE A0 WR D7 D6 D5 D4 D3 D2 D1 D0(8) RAM 0/1 1 0 DATA Writes data into the DDRAM, CGRAM, symbol

8–26 EPSONSED1240 Series• When 2-line scroll has been performed upward at the 4-line display31H30H 33H32H 35H34H 36H 38H37H3AH39H 3CH3BH 3EH 3FH3DH41H

EPSON 8–27SED1240 SeriesSED1240Series• When 2-line scroll has been performed upward at the 2-line display [(LS1, LS2) = (1, 0)]31H30H 33H32H 35H34H 36

8–28 EPSONSED1240 SeriesVertical double-size display controlFunction: Displays the specified line in vertical double-size form.The specified line corr

2–20 EPSONSED1200 Series• LCD Drive Waveform – 2 Line Display (1/16 Duty Cycle)COM 12345678910111213141516SEG1 2 3 4 5Frame signalCOM1COM2COM3COM16SEG

EPSON 8–29SED1240 SeriesSED1240Series• Example of vertical double-size displayAn example of 4-line display will be cited for explanation.30H • • •

8–30 EPSONSED1240 Series• Example of vertical double-size display (characters) [Standard display] When the under-bar cursor is displayed, this will al

EPSON 8–31SED1240 SeriesSED1240SeriesDisplay ON/OFF controlFunction: Sets both display and cursor ON/OFF, andextended register access.• Display ON/OFF

8–32 EPSONSED1240 SeriesPower control (1)Function: Controls the operation of the built-in powercircuit.• Boosting circuit ON/OFF is specified by setti

EPSON 8–33SED1240 SeriesSED1240Series• Example of display (compared by the same mounting method)RAM address set (1) [DDRAM, static iconRAM, electronic

8–34 EPSONSED1240 SeriesYESNOYESNO<Example of Address Set>Note: When making access to the RAM after a change of the RE bit, be sure t

EPSON 8–35SED1240 SeriesSED1240SeriesUnused0XH0RESI SIB EV TEST0123456789ABCDEF11XH2XH3XH4XH5XH6XH7XH0XH1XH2XH3XH4XH5XH6XH7XHCGROM(00H)CGROM(02H)CGROM

8–36 EPSONSED1240 SeriesRAM data writeFunction: Writes data in the RAM areas of the DDRAM,CGRAM, symbol register RAM, static iconRAM, and electronic v

EPSON 8–37SED1240 SeriesSED1240SeriesCHARACTER GENERATORCharacter Generator ROM (CGROM)The SED1240 series is provided with a character generatorROM co

8–38 EPSONSED1240 SeriesLower 4 Bit of Code001234567890123456789123456789ABCDEF0123456789ABCDEFHigher 4 Bit of Code[SED1240D0A CGROM Font]Standard R

EPSON 2–21SED1200 SeriesSED1200SeriesLCD Display Interface• 10 Characters on 1 line (1/8 duty)SEG 1SEG 50COM 1COM 8• 10 Characters on 2 lines (1/16 du

EPSON 8–39SED1240 SeriesSED1240SeriesOPTION ROM1 (when R1, R0 = 0, 0 is selected)OPTION ROM2 (when R1, R0 = 0, 1 is selected)Lower 4 Bit of Code0ABCDE

8–40 EPSONSED1240 SeriesOPTION ROM3 (when R1, R0 = 1, 0 is selected)OPTION ROM4 (R1, R0 = 1,1 is selected)0 1 2 3 4 5 6 7 8 9 A B C D E F0 1 2 3 4 5 6

EPSON 8–41SED1240 SeriesSED1240Series[CGROM Font (ASCII: Font B)]Standard ROM FontLower 4 Bit of CodeHigher4BitofCode00321654987032165498732147658BA9C

8–42 EPSONSED1240 SeriesOPTION ROM1 (when R1, R0 = 0, 0 is selected)A0123456789ABCDEF0123456789ABCDEFDCBEFADCBEFLower 4 Bit of CodeHigher4Bit

EPSON 8–43SED1240 SeriesSED1240SeriesOPTION ROM3 (when R1, R0 = 1, 0 is selected)OPTION ROM4 (R1, R0 = 1,1 is selected)0 1 2 3 4 5 6 7 8 9 A B C D E F

8–44 EPSONSED1240 Series[CGROM Font (JISS2: Font G)]Standard ROM FontLower 4 Bit of Code001234567890123456789123456789ABCDEF0123456789ABCDEFHigher 4

EPSON 8–45SED1240 SeriesSED1240SeriesOPTION ROM1 (when R1, R0 = 0, 0 is selected)OPTION ROM2 (when R1, R0 = 0, 1 is selected)ABCDEFABCDEFLower 4 Bit o

8–46 EPSONSED1240 SeriesOPTION ROM3 (when R1, R0 = 1, 0 is selected)OPTION ROM4 (R1, R0 = 1,1 is selected)0 1 2 3 4 5 6 7 8 9 A B C D E F0 1 2 3 4 5 6

EPSON 8–47SED1240 SeriesSED1240SeriesCharacter Generator RAM (CGRAM)The SED1240 series is provided with a CGROM that permits the user to program chara

8–48 EPSONSED1240 SeriesSymbol Register RAMThe SED1240 series is provided with a symbol register RAM that permits setting each symbol so that symbols

2–22 EPSONSED1200 SeriesCPU Interface• 4-bits CPU with internal I/O portA0RDWRCSDB0DB1DB2DB3φOutput portOutput portOutput portOutput portOutput portOu

EPSON 8–49SED1240 SeriesSED1240SeriesD7 (BONF) D6 (IORH) Function0 * No blink1 0 D4 to D0 blink in black-and-white reverse form.1 1 The bits of “1” ou

8–50 EPSONSED1240 SeriesStatic Icon RAMThe SED1240 series can display static icons in thestandby mode.Each of 10 icons can be set in respect of ON/OFF

EPSON 8–51SED1240 SeriesSED1240SeriesElectronic Volume RAMThe SED1240 series is provided with an electronicvolume function that permits controlling th

8–52 EPSONSED1240 SeriesABSOLUTE MAXIMUM RATINGSNotes: 1. All the voltage values are based on VDD = 0 V.2. The voltages of V1, V2, V3, and V4 must alw

EPSON 8–53SED1240 SeriesSED1240SeriesDC CHARACTERISTICS[VSS = –5.5 V to –1.8 V, Ta = –30 to 85°C unless otherwise specified]Dynamic systemItem Symbol

8–54 EPSONSED1240 Series*1: The wide operating voltage range is guaranteedexcept the case where a sudden voltage changeoccurs during MPU access.In th

EPSON 8–55SED1240 SeriesSED1240SeriestAH8tCCtCYC8tDS8tDH8A0, CSWRD0 to D7tAH8AC CHARACTERISTICSSystem Bus Write Characteristics I (80 series MPU)Item

8–56 EPSONSED1240 SeriesEA0,CSD0 to D7tCYC6tEWLtAW6tEWHtAH6tDH6tDS6System Bus Write Characteristics II (68 series MPU)Item Signal SymbolMeasuringMin.

EPSON 8–57SED1240 SeriesSED1240SeriestCSStCSHtSAStSAHtSLWtSCYCtSHWtSDStSDHCSSCLA0SISerial Interface*1: For the rise and fall time of input signals, se

8–58 EPSONSED1240 SeriesMPU INTERFACE CONNECTION EXAMPLES (FOR REFERENCE)The SED1240 series can be connected to the 80 series MPU or 68 series MPU. F

CONTENTS1. Selection Guide2. SED12003. SED12104. SED12205. SED1225 Series6. SED1230 Series7. SED1234/35 Series8. SED1240 Series9. SE

EPSON 2–23SED1200 SeriesSED1200Series• Interface with Z-80A type CPURDMRECAIWRAmZ-80A®SED1200RESETAnD0D1D2D3RDWRCSA0ClockDB0DB1DB2DB3φDRQQCKDRQQCK

EPSON 8–59SED1240 SeriesSED1240SeriesINTERFACE WITH LCD CELL (FOR REFERENCE)[16 digits × 4 line 5 × 8 dots + symbol] 1st • • • •••• •••••••••••• 16th

8–60 EPSONSED1240 Series[16 digits × 3 line 5 × 8 dots]SED 1241SymbolCOMS1COMSASEGSASEGSJCOMS2COM12345678COM1718192021222324SEG80COM910111213141516Ch

EPSON 8–61SED1240 SeriesSED1240Series[16 digits × 2 line 5 × 8 dots]SED 1242COMS1COMSASEGSASEGSJCOMS2COM12345678SEG1SEG80SEG2SEG3SEG4SEG5COM910111213

8–62 EPSONSED1240 SeriesLIQUID CRYSTAL DRIVE WAVEFORM (B WAVEFORM)COM 1COM 2COM 3COM 4COM 5COM 6COM 7COM 8COM 9COM 10COM 11COM 12COM 13COM 14COM 15COM

EPSON 8–63SED1240 SeriesSED1240SeriesExample of Setting the Instructions(Reference)(1) InitializationThis IC has no power-on reset function when power

8–64 EPSONSED1240 Series(2-1) Setting the Standby mode (2-1) Resetting the Standby mode(3-1) Setting the Sleep mode (3-1) Resetting the Sleep mode

EPSON 8–65SED1240 SeriesSED1240SeriesOPTIONS LISTThe SED 1240 series has the following options. Optionsare available exclusively for users. Please c

8–66 EPSONSED1240 SeriesExample of TCP ArrangementNote: The following does not specify the TCP externalview.SED1240TXX: COM1 to 16, (COM17 to 24) and

EPSON 8–67SED1240 SeriesSED1240SeriesEXAMPLE OF TCPTCP External ViewREFERENCEOutput terminal section pattern shapeSpecification: • Base Yurex 75µm • C

SED1278LCD Controller/DriversTechnical Manual

2–24 EPSONSED1200 Series• Interface with 8085A type CPURDIO/MAIDRQQCKS1S0WRAm8085ASED1200AnD0D1D2D3CLKRESET OUTRDWRCSA0DB0DB1DB2DB3φDRQQCK

– i –SED1278ContentsOVERVIEW ...

EPSON 9–1SED1278SED1278FEATURES• Interface for 4- and 8-bit MPUs• Display RAM – 80 bytes (80 characters)• Character generator ROM – 240 characters–5×8

9–2 EPSONSED1278BLOCK DIAGRAMDB 0toDB 7ER/WRSVSSVDCV1V2V3V4V5COM 1 toCOM 16SEG 1 toSEG 40XSCLLPFRDOOSC1 OSC2855577I/O BufferI/O ControlInstruction Dec

EPSON 9–3SED1278SED127825SED1278D24 141 64408065PINOUTPinNumber Name1 SEG222 SEG213 SEG204 SEG195 SEG186 SEG177 SEG168 SEG159 SEG1410 SEG1311 SEG1212

9–4 EPSONSED1278PIN DESCRIPTIONMPU InterfaceRS Register select signal input. Selectsbetween the data and instruction registersduring CPU access.RS =

EPSON 9–5SED1278SED1278TERMINAL CONFIGURATION1. Input terminal configuration (1)VDDInternalApplicable terminal· E· OSCIVSS2. Input terminal configurat

9–6 EPSONSED12784. Input/Output terminal configurationVDDApplicable terminal· DBO to DB7InternalVSSINSTRUCTION DESCRIPTIONInstruction Summary* Don’t

EPSON 9–7SED1278SED1278Write Only InstructionsClear DisplayDB7 DB6 DB5 DB4 DB3 DB2 DB1 DB00000000101HRS = 0This instruction1. loads all locations in t

9–8 EPSONSED1278Set CGRAM AddressDB7 DB6 DB5 DB4 DB3 DB2 DB1 DB001 ACR40H to 7FHRS = 0This instruction1. loads a new 6-bit address into the address co

EPSON 9–9SED1278SED1278Read Only InstructionsRead Busy Flag/Address CounterDB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0BF ACCRS = 1Reading the instruction register

EPSON 2–25SED1200 SeriesSED1200SeriesAPPENDIX A: CHARACTER CODES AND FONTSSED1200F0A/SED1200D0ALower 4 bit (D0 to D3) of Character Code (Hexadecimal)

9–10 EPSONSED1278SPECIFICATIONSAbsolute Maximum RatingsNotes: 1. VDD > V1 > V2 > V3 > V4 > V5 > VSS2. A flat package product can bec

EPSON 9–11SED1278SED1278AC Characteristics• MPU write cycle timing (write to SED1278)R/WtAStWEHtAHtAHVIL1VIL1VIH1VIH1tcycEVIL1tDStDHtrEtFEVIL1VIH1RSED

9–12 EPSONSED1278• External segment driver signal timingLP0.9 VDD0.1 VDD0.1 VDD0.9 VDD0.1 VDD0.9 VDD0.9 VDD0.9 VDD0.1 VDD0.9 VDD0.1 VDDtWCLHtWCLHtWCLL

EPSON 9–13SED1278SED1278• Power-on reset timing0.1ms ≤ tr ≤ 10ms(Ta = –20 to 75 deg. C)toff ≥ 1mstr toff0.2V4.5VLCD Drive VoltagesMechanical Specifica

9–14 EPSONSED1278SED1278D Package DimensionsChip size: 4.50 mm × 3.67 mmChip thickness: 400 µmPad size: 109 µm × 109 µmPad pitch: 182 µm25YX24 141 644

EPSON 9–15SED1278SED1278PadX (µm) Y (µm)Number Name41 DB2 –2087 –167142 DB3 –1905 –167143 DB4 –1723 –167144 DB5 –1541 –167145 DB6 –1359 –167146 DB7 –1

9–16 EPSONSED1278OPERATIONThe Busy FlagThe SED1278 takes between 10 and 410 clock cycles toexecute instructions. During that period additionalinstruc

EPSON 9–17SED1278SED1278Software initializationInitialization during power-on reset involves severalunstable factors related to power-supply outputflu

9–18 EPSONSED12780000001000DB7·RS R/W E·····DB0Display Clear[8][10][11][9][13]0000000001DB7 RS R/W E······DB0Entry Modeset[12]00000001I/D SDB7 RS R/W

EPSON 9–19SED1278SED1278• Software Initialization (4-bit MPU bus, fOSC = 250 kHz)[1]000011DB7 RS R/W E··DB430 ms or more4.1 ms or more100 µs or more40

2–26 EPSONSED1200 SeriesSED1200F0B/SED1200D0BLower 4 bit (D0 to D3) of Character Code (Hexadecimal)Higher 4 bit (D4 to D7) of Character Code (Hexadeci

9–20 EPSONSED1278[9][10][12]Display clear[11]00010000DB7··DB4BF=0(High-order)(Low-order)(High-order)(Low-order)(High-order)(Low-order)BF 0 1 1DB7 RS R

EPSON 9–21SED1278SED1278THE CHARACTER GENERATORCharacter Generator ROM (CGROM)The SED1278 contains a 240 character, masked CGROM.Each character is 5×1

9–22 EPSONSED12785×11 pixel font (1/11 duty cycle)The maximum character height is 11 pixels, however ifa cursor is used row 10 must be left blank.The

EPSON 9–23SED1278SED1278LCD INTERFACELCD Drive VoltagesThe SED1278 generates segment and common drivesignals using the voltages supplied to pins V1, V

9–24 EPSONSED1278LCD Drive Signal WaveformsThe segment and common drive waveforms generatedby the SED1278, for various duty cycle ratios, are shownin

EPSON 9–25SED1278SED1278FRtFRtFRVDDVSSVDDV1V4V5VDDV1V4V5VDDV1V4V5VDDV5, V3V5COM 1COM 2COM 16SEG 1...

9–26 EPSONSED1278• 1 line• 8 characters•5×10 pixels + cursor• 1/11 duty cycle• System set: N = 0, F = 1SED1278COM 118COM 10COM 11SEG 1SEG 40No. ofcha

EPSON 9–27SED1278SED1278• 1 line• 80 characters•5×7 pixels + cursor• 1/8 duty cycle• System set: N = 0, F = 0COM 1COM 7COM8SEG 1SEG40DOXSCLLPFRSEG 0

9–28 EPSONSED1278• 2 line• 20 characters•5×7 pixels + cursor• 1/16 duty cycle• System set: N = 1, F = don’t careCOM1COM7COM8COM9COM16COM15SEG 1SEG40D

EPSON 9–29SED1278SED1278• 2 line• 40 characters•5×7 pixels + cursor• 16 duty cycle• System set: N = 1, F = don‘t careSED1278COM 1COM 7COM 8COM 9 COM1

EPSON 2–27SED1200 SeriesSED1200SeriesAPPENDIX B: I/O TERMINAL STRUCTURE• Input Terminal (No pull-up)Terminals used: Φ, OSC1VDDVSSVSSVDD• Input Termi

9–30 EPSONSED1278MPU INTERFACEThe SED1278 has selectable 8- or 4-bit MPU interface.An example of a typical 8-bit MPU interface is shownfigure 8.Z80 SE

EPSON 9–31SED1278SED1278COMPARISON WITH HD44780 BY HITACHIItem HD44780 (Hitachi) SED1278Data display RAM 80 bytes ←Character generator ROM 192 types 2

9–32 EPSONSED1278APPENDIX A: CHARACTER CODES AND FONTSSED1278F0A/SED1278D0AHigher 4-bit (D4 to D7) of Character Code (Hexadecimal)Lower 4-bit (D0 to

EPSON 9–33SED1278SED1278SED1278F0B/SED1278D0BHigher 4-bit (D4 to D7) of Character Code (Hexadecimal)Lower 4-bit (D0 to D3) of Character Code (Hexadeci

9–34 EPSONSED1278SED1278F0C/SED1278D0CHigher 4-bit (D4 to D7) of Character Code (Hexadecimal)Lower 4-bit (D0 to D3) of Character Code (Hexadecimal)0CG

EPSON 9–35SED1278SED1278SED1278F0E/SED1278D0EHigher 4-bit (D4 to D7) of Character Code (Hexadecimal)Lower 4-bit (D0 to D3) of Character Code (Hexadeci

9–36 EPSONSED1278SED1278F0G/SED1278D0GHigher 4-bit (D4 to D7) of Character Code (Hexadecimal)Lower 4-bit (D0 to D3) of Character Code (Hexadecimal)0CG

EPSON 9–37SED1278SED1278SED1278F0H/SED1278D0HHigher 4-bit (D4 to D7) of Character Code (Hexadecimal)Lower 4-bit (D0 to D3) of Character Code (Hexadeci

9–38 EPSONSED1278APPENDIX B: PIN CONSTRUCTIONInput Pin Type 1•E• OSC1VDDVSSInput Pin Type 2•RS• R/WVDDPinVSS

EPSON 9–39SED1278SED1278Output Pin• OSC2• XSCL, LP, FR, DOVDDVSSI/O Pin• DB0 to DB7VDDPinVSS

2–28 EPSONSED1200 Series• Output Terminal (No pull-up)Terminals used: OSC2VDDVDDVSSVSS• Input Terminal (Pull-up)Terminals used: CS, RD, WR, A0VDDVSS

SED1280Dot-Matrix LCD ControllerTechnical Manual

– i –SED1280ContentsOVERVIEW ...

EPSON 10–1SED1280SED1280FEATURES• LCD controller• 80-byte, 80-character display data RAM• Character generator ROM– 240, 5 × 10-pixel characters• Chara

10–2 EPSONSED1280Number Name Description1VSS Ground2 to 6 V1 to V5 LCD controller power supply inputs7 LP Data latch pulse output8 XSCL Data transfer

EPSON 10–3SED1280SED1280SPECIFICATIONSAbsolute Maximum RatingsNote: VDD ≥ V1 ≥ V2 ≥ V3 ≥ V4 ≥ V5 ≥ VSS = 0 VRecommended Operating ConditionsParameter

10–4 EPSONSED1280DC Electrical CharacteristicsLatch-up enduranceStatic breakdown resistanceVDD = 5.0 V, VSS = 0 V, Ta = –20 to 75°CParameter Symbol Co

EPSON 10–5SED1280SED1280Measurement conditionsThe measurement circuit is shown in the followingfigure. The switch is in position A until capacitor Cc

10–6 EPSONSED1280LPFRXSCLDO0.9VDD0.1VDD0.9VDD0.1VDD0.9VDD0.1VDDtWCLHtDSLPtDSLPtWCLHtDFRtOSXtDXHtWCLLReset timingVDD = 5.0 V, VSS = 0 V, Ta = –20 to 75

EPSON 10–7SED1280SED1280Serial data transmissionSWC1 to SWC10 and EI1 to EI3 are scanned and theirinput logic levels transmitted serially from SOD ass

10–8 EPSONSED1280After resetting> 4.1 ms> 100µs> 40 µsBusy bit?Busy bit?Busy bit?101010NOYESNOYESNOYESInitialization completeSystem setRegist

EPSON 2–29SED1200 SeriesSED1200Series• I/O Terminal (No pull-up)Terminals used: D3VDDVSSVSSVSSVDDVDDRDBusy flagWRWR• LCD Drive Terminal (No pull-up)T

EPSON 10–9SED1280SED1280If the host does not check ST1, it should determine whento send new data by calculating the processing time ofeach data block

10–10 EPSONSED1280Data transmission flow chartsThe following figures show the 1278 core display dataRAM processing when data is transferred from the h

EPSON 10–11SED1280SED1280System RegistersThe system registers access the data display RAM,character generator RAM and LED display RAM. Thesewrite-onl

10–12 EPSONSED12801278 instruction registerThe following table shows the 1278 instructions.The control bit functions are shown in the followingtable.I

EPSON 10–13SED1280SED1280Key ScanningAn 8 × 10-key matrix can be scanned using SWS1 toSWS8 scan outputs and SWC1 to SWC10 scan inputs.The SWS1 timing

10–14 EPSONSED1280LED controller timingThe LED controller timing for one scan and a series ofscans is shown in the following figures.SWS1SWS2SWS3SWS8L

EPSON 10–15SED1280SED1280APPLICATION CIRCUITSLCD Controller Resistor DividerVDDV1V2V3V4V5VSS5 VC0EO1SED1280FEO2Note: C0 is connected between VDD and V

10–16 EPSONSED1280LCD Connections (2 × 20 character, 5 × 7 dots/character)COM1totoSED1280Fto189204021COM8COM9COM16SEG1SEG40D0XSLLPFRD0XSCLLPFRDO0D1SEG

EPSON 10–17SED1280SED1280LED Matrix ConnectionsLE1VDDLE2toLE5SWS1SED1280FSWS2toSWS8To key matrixKey Switch Matrix ConnectionsSWS1To LED matrixSWS2SWS8

AMERICAS-MOS SYSTEMS, INC.150 River Oaks ParkwaySan Jose, CA 95134, U.S.A.Phone: +1-408-922-0200 Fax: +1-408-922-0238Telex: 176079 SMOS SNJUDS-MOS

SED1210LCD Controller/DriversTechnical Manual

In pursuit of “Saving” Technology, Epson electronic devices.Our lineup of semiconductors, liquid crystal displays and quartz devicesassists in creatin

SED1200 SeriesLCD Controller/DriversFirst issue Nov. 1990 UPrinted May, 1998 in Japan H B Electronic Devices Information on the EPSON WWW ServerEL

– i –SED1210ContentsOVERVIEW ...

EPSON 3–1SED1210SED1210FEATURES• Internal display RAM to hold 40 8-bit character codes.• Internal character generator– CGROM: 160 JIS ASCII characters

SED1200 SeriesLCD Controller/DriversSelection Guide

3–2 EPSONSED1210BLOCK DIAGRAMSEG 1 to SEG 40VDDSO VSSVLCDVL3VL2COM 1FRLPSHCLtoCOM 16WRRDA0CSDB0toDB7OSC1DDRAMCGRAM CGROMData controlSegment signalgene

EPSON 3–3SED1210SED1210TABLE 1. SED1210F PinoutNo. NAME1 SEG172 SEG163 SEG154 SEG145 SEG136 SEG127 SEG118 SEG109 SEG910 SEG811 SEG712 SEG613 SEG514

3–4 EPSONSED1210PIN DESCRIPTIONCPU InterfaceCS Active low chip select input.RD Active low read enable input.WR Active low write strobe.A0 Selects betw

EPSON 3–5SED1210SED1210Write CommandsSET CURSOR DIRECTIONSets the way in which the cursor address register changesas character data is written to the

3–6 EPSONSED1210SET CHARACTER CODEWrites the character code given by C7–C0 into thecharacter data RAM at the location pointed to by thecursor address

EPSON 3–7SED1210SED1210Electrical SpecificationsDC CharacteristicsVDD = 5 VVSS = 0 V, Ta = –20 to +70°CParameter Symbol ConditionRatingUnit Pinmin typ

3–8 EPSONSED1210VDD = 3 VVSS = 0 V, Ta = –20 to 70°CParameter Symbol ConditionRatingUnit Pinmin typ maxLiquid crystal display supplyVLCD 3.5 — 5.5 V V

EPSON 3–9SED1210SED1210AC CharacteristicsMPU Read TimingA0t ARt CRt RPt RCt RAt RDt RH2.0V0.8V2.4V0.4Vt ft rCSRDBusy flagDB7Input signal(A0, CS, RD)VD

3–10 EPSONSED1210VDD = 3 V, Ta = –20 to 70°C.Note: Load on pin DB7 is CL = 100 pF.MPU Write TimingA0CSWRInput signal(A0, CS, WR,DB0 to DB7, ø)DB0 to D

EPSON 3–11SED1210SED1210VDD = 5 V, Ta = –20 to 70°C.VDD = 3 V, Ta = –20 to 70°C.Parameter SymbolRatingUnitmin typ maxA0 → WR setup time tAW 0——nsCS →

SED1200D0AJIS characterAI pad chipSED1200D0BASCII character4-bitSED1200F0A50 20–JIS characterparallelQFP1-80pinSED1200F0BASCII characterSED1200F1B2.5–

3–12 EPSONSED1210X-driver Control TimingFRLPSOXSCLt WHLPt DFRt WLLPt LTt LHt CCLt DSOt WHCLt WLCLVDD = 2.5 to 5.5 V, Ta = –20 to 70°C.Note: Load capac

EPSON 3–13SED1210SED1210Mechanical Specifications65804025640.992±0.016(25.2±0.4)0.787±0.004(20.0±0.1)0.756±0.016(19.2±0.4)0.551±0.004(14.0±0.1)0.031±0

3–14 EPSONSED1210OPERATIONData Input/OutputNew commands must not be written to the SED1210F ifit is currently executing the last one, so the busy flag

EPSON 3–15SED1210SED1210Loading CGRAMThe character generator RAM is loaded with a characterbit pattern using a combination of one SET CGRAMADDRESS com

3–16 EPSONSED1210APPLICATION NOTESDisplay OscillatorThe SED1210F has an internal oscillator to generate thetiming signals required for the LCD display

EPSON 3–17SED1210SED1210Command Clock (Φ)When the system MPU issues a command to theSED1210F, the timing for the execution of the commandis derived fr

3–18 EPSONSED1210Examples of drive waveforms are shown below.• LCD Drive Waveform – 1 Line Display (1/8 Duty Cycle)COM 12345678SEG14/4(VDD—VLCD)3/4

EPSON 3–19SED1210SED1210• LCD Drive Waveform – 2 Line Display (1/16 Duty Cycle)COM 12345678910111213141516SEG1VDDVL1VL2VL3VL4VLCDVDDVL1VL2VL3VL4VLCDVD

3–20 EPSONSED1210LCD Display Interface• 8 Characters/2 lineGNDCLOCKDB0 toDB6RfCOM164016COM1OSC1OSC2SOSHCLLPFRVL2VL3øDB0-6DB7A0CSWRRDVLCDVSSVDDSEG1SEG4

EPSON 3–21SED1210SED1210• Interface with 8-bit CPUIORQA0SED1210FChipSelectorCSDB0toDB6D0toD6DB7A0A1 to A7Z80D7RDWRRDWRRZ80 is a registered trademark o

SED1200 SeriesLCD Controller/DriversTechnical Manual

3–22 EPSONSED1210APPENDIX A: CHARACTER CODES AND FONTSSED1210F0ALower 4 bit (D0 to D3) of Character Code (Hecadecimal)Higher 4 bits (D4 to D7) of Cha

EPSON 3–23SED1210SED1210SED1210F0BLower 4 bit (D0 to D3) of Character Code (Hecadecimal)Higher 4 bits (D4 to D7) of Character Code (Hexadecimal)0 1234

3–24 EPSONSED1210APPENDIX B: I/O TERMINAL STRUCTUREI/O Terminal Structure Input• Input Terminal (No pull-up)Terminals used: Φ, OSC1VDDVSSVSSVDD• Inp

EPSON 3–25SED1210SED1210• I/O Terminal (No pull-up)Terminals used: DB7VDDVDDVDDVSSVSSVSSRDBusy FlugWRWR• Output Terminal (No pull-up)Terminals used:

SED1220LCD Controller/DriversTechnical Manual

– i –ContentsOVERVIEW ...

EPSON 4–1SED1220SED1220• Built-in CR oscillation circuit (C and R contained)• Accepts external clock input• High-speed MPU interfaceAffords interface

4–2 EPSONSED1220BLOCK DIAGRAMInput bufferMPU interfaceAddress counterCommanddecoderCursor controlSEG driving circuitStatic icon drive circuitCOM drivi

EPSON 4–3SED1220SED1220CHIP SPECIFICATIONSED1220D**/1221D**/122AD**SED122*D**Digits prepared for CGROM pattern changesChip size: 7.70 × 2.77 mmPad pit

4–4 EPSONSED1220SED1222D**SED1222D**Digits prepared for CGROM pattern changesChip size: 7.70 × 2.77 mmPad pitch: 124 µm (Minimum)Chip thickness (for r

– i –SED1200SeriesContentsOVERVIEW ...

EPSON 4–5SED1220SED1220PAD COORDINATESNo. Name X Y<SED1220D**/1221D**>Unit: µm1 NC –3700 –12042 NC –36003 NC –35004 A0 –32525 WR –31326 CS –301

4–6 EPSONSED1220109 SEG31 119 1204110 SEG32 19111 SEG33 –81112 SEG34 –181113 SEG35 –281114 SEG36 –381115 SEG37 –481116 SEG38 –581117 SEG39 –681118 SEG

EPSON 4–7SED1220SED1220PAD COORDINATESNo. Name X Y<SED1222D**>Unit: µm1 A0 –3312 –12282 WR –31803 CS –30484 D7 –29165 D6 –27846 D5 –26527 D4 –2

4–8 EPSONSED1220PAD COORDINATESNo. Name X Y109 SEG58 –3694 1191110 SEG59 1067111 SEG60 943112 COM16 819113 COM15 695114 COM14 571115 COM13 447116 COM1

EPSON 4–9SED1220SED1220PAD COORDINATESNo. Name X Y<SED122AD**>Unit: µm1 NC –3700 –12042 NC –36003 NC –35004 A0 –32525 WR –31326 CS –30127 D7 –2

4–10 EPSONSED1220109 SEG31 119 1204110 SEG32 19111 SEG33 –81112 SEG34 –181113 SEG35 –281114 SEG36 –381115 SEG37 –481116 SEG38 –581117 SEG39 –681118 SE

EPSON 4–11SED1220SED1220DESCRIPTION OF PINSPower PinsLCD Power Circuit PinsPin name I/O Description Q’tyVDDPower supplyConnected to logic supply. Com

4–12 EPSONSED1220Pin name I/O Description Q’tyD7 (SI) I 8-bit input data bus. These pins are connected to a 8-bit or 16-bit 8D6 (SCL) standard MPU da

EPSON 4–13SED1220SED1220Liquid Crystal Drive Circuit SignalsDynamic drive terminal (SED1220D**/1221D**/122AD**)Dynamic drive terminal (SED1222D**)Stat

4–14 EPSONSED1220FUNCTIONAL DESCRIPTIONMPU InterfaceSelection of interface typeIn the SED1220 Series, data transfer is performed through a 8-bit or 4-

EPSON 2–1SED1200 SeriesSED1200SeriesFEATURES• Internal display RAM to hold 20 8-bit character codes.• Internal character generator– CGROM: 160 JIS ASC

EPSON 4–15SED1220SED1220Fig. 1Identification of data bus signalsThe SED1220 series identifies data bus signals, as shown in Table 3, by combinations o

4–16 EPSONSED1220Voltage Tripler CircuitIf capacitors are connected between CAP+1 – CAP–1and CAP2+,CAP2– and VSS VOUT, VDD– VSS potentialis negatively

SED1220EPSON 4–17SED1220● Voltage Regulation Circuit Using Electronic VolumeFunctionThe electronic volume function allows to control theliquid crystal

4–18 EPSONSED1220Liquid crystal voltage generating circuitV5 potential is resistive divided within IC to produce V1,V2, V3 and V4 potentials required

SED1220EPSON 4–19SED1220CAP1+CAP1-VOUTV5R3R2R1VDD, V0V1V2V3V4V5VS1VRVSSSED1220D**CAP2-CAP2+C2C2C2C2C2C2ExternalpowersourceCAP1+CAP1-VOUTV5VDD, V0V1V2V

4–20 EPSONSED1220Low Power Consumption ModeSED1220 is provided with standby mode and sleep modefor saving power consumption during standby period.● St

SED1220EPSON 4–21SED1220The cursor position indicates the position of addresscounter.Therefore, whenever moving the cursor, changethe address counter

4–22 EPSONSED1220VF = 0 : Voltage follower off1 : Voltage follower onVC = 0 : Voltage regulation circuit off1 : Voltage regulation circuit on(5) Syste

SED1220EPSON 4–23SED1220(7) Data Write1This command writes data the DD RAM, CG RAMor symbol register.2This command automatically increases the address

4–24 EPSONSED1220Table 4 SED1220 Series Command List CommandCodeFunctionA0 WR D7 D6 D5 D4 D3 D2 D1 D0(1) Cursor Home 0 0 0 001****Moves the cursor to

2–2 EPSONSED1200 SeriesBLOCK DIAGRAMSEG 1 to SEG 50VDD VSSVLCDCOM 1toCOM 16WRRDA0CSDB0DB1DB2DB3XGDDRAMCGRAM CGROMData controlSegment signalgeneratorSe

SED1220EPSON 4–25SED1220SED1220DA*Lower 4 Bit of Code0123456789ABCDEF0123456789ABCDEFHigher 4 Bit of Cord

4–26 EPSONSED1220SED1220DB*Lower 4 Bit of Code0123456789ABCDEF0123456789ABCDEFHigher 4 Bit of Cord

SED1220EPSON 4–27SED1220SED1220DG*Lower 4 Bit of Code0123456789ABCDEF0123456789ABCDEFHigher 4 Bit of Cord

4–28 EPSONSED1220Character Generator RAM (CG ROM)CGRAM contained in SED1220 enables user programming of character patterns for display signals with hi

SED1220EPSON 4–29SED1220Symbol RegisterSED1220 contains the symbol register which enable individual symbol setting for displaying on the screen.Capaci

4–30 EPSONSED1220up to 5 icons (SED1220/1221/1222) or 10 icons(SED122A).Following shows relationship between the static iconsfunctions, static icon R

SED1220EPSON 4–31SED1220ABSOLUTE MAXIMUM RATINGSNotes: 1. All the voltage values are based on VDD = 0 V.2. For voltages of V1, V2, V3 and V4, keep the

4–32 EPSONSED1220DC CHARACTERISTICSVDD = 0 V, VSS = –3.6 V to –2.4 V, Ta = –30 to 85°C unless otherwise specified.Item Symbol Condition min typ max Un

SED1220EPSON 4–33SED1220*5: Character “ ” display. This is applicable to thecase where no access is made from the MPU and thebuilt-in power circuit

4–34 EPSONSED1220TIMING CHARACTERISTICS(1) MPU Bus Write Timing (80 series)A0WRD0 to D7tAH8tcyc8tAC8tAW8tCCLtCCHtDS8tDH8CSItem Signal SymbolMeasuringM