UPD784938 datasheet(69/733 Pages) NEC

Part #	UPD784938

Description	16-Bit Single-Chip Microcontrollers

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Manufacturer	NEC [NEC]

Direct Link	http://www.nec.com/

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Figure 3-1.

µPD784935 Memory Map

Notes 1. Accessed in external memory expansion mode.

2. The 5,376 bytes of this area can be used as internal ROM only when the LOCATION 0FH instruction is executed.

3. 92,928 bytes when the LOCATION 0 instruction is executed, and 98,304 bytes when the LOCATION 0FH instruction is

executed.

4. Base area, reset or interrupt entry area, excluding internal RAM in the case of reset.

Internal ROM

(32,768 bytes)

(256 bytes)

Special function registers (SFRs)

Internal ROM

(60,160 bytes)

Internal RAM

(5,120 bytes)

External memoryNote 1

(928 Kbytes)

Note 1

Note 2

Internal ROM

(96 Kbytes)

When location 0 instruction is executed

General-purpose

registers

(128 bytes)

Data area (512 bytes)

Program/data area

(4,608 bytes)

Macro service control

word area (42 bytes)

CALLF entry area

(2 Kbytes)

Program/data area Note 3

CALLT table area

(64 bytes)

Vector table area

(64 bytes)

Internal RAM

(5,120 bytes)

External memoryNote 1

(944,896 bytes)

(256 bytes)

Special function registers (SFRs)

When location 0FH instruction is executed

Note 1

1 8 0 0 0 H

1 7 F F F H

0 E B 0 0 H

0 E A F F H

0 F F D F H

0 F F D 0 H

0 F F 0 0 H

0 F E F F H

F F F F F H

0 0 8 0 0 H

0 0 7 F F H

0 F E F F H

F F E F F H

0 F E 8 0 H

0 F E 7 F H

0 F E 3 9 H

0 F E 0 6 H

0 F D 0 0 H

0 F C F F H

0 E B 0 0 H

0 1 0 0 0 H

0 0 F F F H

0 0 0 8 0 H

0 0 0 7 F H

0 0 0 4 0 H

0 0 0 3 F H

0 0 0 0 0 H

F F E 8 0 H

F F E 7 F H

F F E 2 F H

F F E 0 6 H

F F D 0 0 H

F F C F F H

F E B 0 0 H

F F F F F H

F F F D F H

F F F D 0 H

F F F 0 0 H

F F E F F H

F E B 0 0 H

F E A F F H

0 0 0 0 0 H

0 E A F F H

1 8 0 0 0 H

1 7 F F F H

1 0 0 0 0 H

0 F F F F H

1 7 F F F H

1 0 0 0 0 H

Note 4

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