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UPD780138 Datasheet(PDF) 65 Page - NEC |
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UPD780138 Datasheet(HTML) 65 Page - NEC |
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65 / 558 page  CHAPTER 3 CPU ARCHITECTURE User’s Manual U16228EJ2V0UD 65 Figure 3-14. Correspondence Between Data Memory and Addressing ( µPD780136) FFFFH FF20H FF1FH 0000H FF00H FEFFH FEE0H FEDFH FE20H FE1FH C000H BFFFH F800H F7FFH F400H F3FFH FB00H FAFFH Special function registers (SFR) 256 × 8 bits Short direct addressing SFR addressing Internal high-speed RAM 1024 × 8 bits General-purpose registers 32 × 8 bits Reserved Internal ROM 49152 × 8 bits Register addressing Direct addressing Register indirect addressing Based addressing Based indexed addressing Reserved Internal expansion RAM 1024 × 8 bits |
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