NEC uPD78056Y User Manual

Page 513

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513

CHAPTER 22 EXTERNAL DEVICE EXPANSION FUNCTION

Figure 22-1. Memory Map when Using External Device Expansion Function (2/4)

(c)

Memory map of

µ

PD78P054, 78P058,

(d) Memory map of

µ

PD78P058, 78P058Y

78P058Y when the

µ

PD78054, 78054Y

when the

µ

PD78055, 78055Y and

and internal PROM are 32 Kbytes

internal PROM are 40 Kbytes

FFFFH

SFR

Internal High-Speed RAM

FF00H
FEFFH

FB00H
FAFFH

FAE0H
FADFH

FAC0H
FABFH

FA80H
FA7FH

C000H
BFFFH

0000H

Reserved

Internal Buffer RAM

Reserved

Full-Address Mode

(when MM2-MM0=111)

Single-chip Mode

16-Kbyte Expansion Mode

(when MM2-MM0=101)

9000H
8FFFH

8100H
80FFH

8000H
7FFFH

4-Kbyte Expansion Mode

(when MM2-MM0=100)

256-byte Expansion Mode

(when MM2-MM0=011)

FFFFH

SFR

Internal High-Speed RAM

FF00H
FEFFH

FB00H
FAFFH

FAE0H
FADFH

FAC0H
FABFH

FA80H
FA7FH

E000H
DFFFH

0000H

Reserved

Internal Buffer RAM

Reserved

Full-Address Mode

(when MM2-MM0=111)

Single-chip Mode

16-Kbyte Expansion Mode

(when MM2-MM0=101)

B000H
AFFFH

A100H
A0FFH

A000H
9FFFH

4-Kbyte Expansion Mode

(when MM2-MM0=100)

256-byte Expansion Mode

(when MM2-MM0=011)

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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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