UPD784938 datasheet(72/733 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 3-4.

µPD784938, 78F4938 Memory Map

Notes 1. Accessed in external memory expansion mode.

2. The 10,496 bytes of this area can be used as internal ROM only when the LOCATION 0FH instruction is executed.

3. 251,647 bytes when the LOCATION 0 instruction is executed, and 262,143 bytes when the LOCATION 0FH instruction is

executed.

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

5. In the case of

µPD78F4938: Flash memory

Note

4

Note

4

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 D 6 0 0 H

F D 5 F F H

4 0 0 0 0 H

3 F F F F H

0 0 0 0 0 H

0 F E F F H

0 F E 8 0 H

0 F E 7 F H

0 0 8 0 0 H

0 0 7 F F H

0 0 0 0 0 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 D 6 0 0 H

3 F F F F 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 D 6 0 0 H

0 D 5 F F H

00000H

F F E F F H

F F E 8 0 H

F F E 7 F H

F F E 3 9 H

F F E 0 6 H

F F D 0 0 H

F F C F F H

F D 6 0 0 H

F F F F F H

1 0 0 0 0 H

0 F F 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

3 F F F F H

4 0 0 0 0 H

3 F F F F H

1 0 0 0 0 H

0 D E F F H

(256 bytes)

Special function registers (SFRs)

Internal ROM

(54,768 bytes)

Internal RAM

(10,240 bytes)

External memoryNote 1

(832 Kbytes)

Note 1

General-purpose

register

(128 bytes)

Macro service control

word area (42 bytes)

Data area (512 bytes)

Program/data area

(9,728 bytes)

Note 2

CALLF entry area

(2 Kbytes)

Program/data area

Note 3

CALLT table area

(64 bytes)

Vector table area

(64 bytes)

Internal RAM

(10,240 bytes)

External memoryNote 1

(843,520 bytes)

(256 bytes)

Special function registers (SFRs)

Internal ROM

(256 Kbytes)

When LOCATION 0 instruction is executed

Note 1

When LOCATION 0FH instruction is executed

Internal ROM

(196,608 bytes)

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