NEC uPD78056Y User Manual

Page 103

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103

CHAPTER 5 CPU ARCHITECTURE

Figure 5-11. Data Memory Addressing (

µ

PD78054, 78054Y)

0000H

General Registers

32

×

8 bits

Internal ROM

32768

×

8 bits

Internal Buffer RAM

32

×

8 bits

External Memory

31360

×

8 bits

Reserved

8000H
7FFFH

FA80H
FA7FH

FAC0H
FABFH

FAE0H
FADFH

FEE0H
FEDFH

FF00H
FEFFH

FFFFH

Internal High-speed RAM

1024

×

8 bits

Reserved

FB00H
FAFFH

FF20H
FF1FH

FE20H
FE1FH

Special Function
Registers (SFRs)

256

×

8 bits

SFR Addressing

Register Addressing

Short Direct
Addressing

Direct Addressing

Register Indirect
Addressing

Based Addressing

Based Indexed
Addressing

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This manual is related to the following products:

PD78056Y, PD78055Y, PD78058, PD78052Y, PD78P058Y, PD78P054, PD78054Y, uPD78054Y, PD78056, PD78058Y, uPD78058Y, uPD78052, uPD78055Y, PD78053Y, uPD78052Y, uPD78054, uPD78P058, uPD78053, PD78052(A), uPD78053Y, uPD78056, PD78055, uPD78058, uPD78P054, PD78052, PD78053(A), PD78053, PD78054(A)

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