D78054 Просмотр технического описания (PDF) - NEC => Renesas Technology

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D78054

8-BIT SINGLE-CHIP MICROCOMPUTER

NEC => Renesas Technology 

µPD78001B(A), 78002B(A)

4. MEMORY SPACE

The memory map of µPD78001B(A)/78002B(A) is shown in Fig. 4-1.

Fig. 4-1 Memory Map

FFFFH

FF00H

FEFFH

FEE0H

FEDFH

Special Function Registers

(SFR) 256 × 8 Bits

General Registers

32 × 8 Bits

Internal High-Speed RAM*

mmmmH

mmmmH–1

Data

Memory

Space

Use Prohibited

FA80H

FA7FH

Program

Memory

Space

nnnnH+1

nnnnH

0000H

External Memory

Internal ROM*

Remark Shaded area indicates internal memory.

nnnnH

1000H

0FFFH

0800H

07FFH

0080H

007FH

0040H

003FH

0000H

Program Area

CALLF Entry Area

Program Area

CALLT Table Area

Vector Table Area

* Intermal ROM and internal high-speed RAM capacities vary depending on the product (see the table below).

Product Name

µPD78001B(A)

µPD78002B(A)

Internal ROM

End Address

nnnnH

1FFFH

3FFFH

Internal High-Speed

RAM Start Address

mmmmH

FE00H

FD80H

15

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