UPD78014 datasheet(15/62 Pages) NEC

15 / 62 page

µPD78001B(A), 78002B(A)

MEMORY SPACE

The memory map of

µPD78001B(A)/78002B(A) is shown in Fig. 4-1.

Fig. 4-1 Memory Map

Remark

Shaded area indicates internal memory.

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

Internal ROM

End Address

nnnnH

1FFFH

3FFFH

Product Name

µPD78001B(A)

µPD78002B(A)

Internal High-Speed

RAM Start Address

mmmmH

FE00H

FD80H

FFFFH

FF00H

FEFFH

mmmmH

mmmmH–1

FEE0H

FEDFH

FA80H

FA7FH

nnnnH+1

nnnnH

0000H

nnnnH

1000H

0FFFH

0800H

07FFH

0080H

007FH

0040H

003FH

0000H

Use Prohibited

External Memory

Program Area

CALLF Entry Area

Program Area

CALLT Table Area

Vector Table Area

Program

Memory

Space

Data

Memory

Space

Special Function Registers

(SFR) 256

× 8 Bits

Internal High-Speed RAM*

General Registers

× 8 Bits

Internal ROM*

UPD78014 Datasheet(PDF) 15 Page - NEC

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