Epson S1C6200A Specifiche Pagina 25

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S1C62740 TECHNICAL HARDWARE EPSON I-13
CHAPTER 3: CPU, ROM, RAM
RAM
The RAM, a data memory storing a variety of data, has a capacity
of 512 words, each of four bits. When programming, keep the
following points in mind.
(1) Part of the data memory can be used as stack area when
subroutine calls and saving registers, so be careful not to
overlap the data area and stack area.
(2) Subroutine calls and interrupts take up three words of the
stack area.
(3) The data memory 000H–00FH is for the register pointers (RP),
and is the addressable memory register area.
3.3
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