M38025M6 datasheet(8/51 Pages) MITSUBISHI

Part #	M38025M6

Description	SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

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Manufacturer	MITSUBISHI [Mitsubishi Electric Semiconductor]

Direct Link	http://www.mitsubishichips.com

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MITSUBISHI MICROCOMPUTERS

3802 Group

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

8

FUNCTIONAL DESCRIPTION

Central Processing Unit (CPU)

The 3802 group uses the standard 740 family instruction set. Re-

fer to the table of 740 family addressing modes and machine in-

structions or the SERIES 740 <Software> User’s Manual for de-

tails on the instruction set.

Machine-resident 740 family instructions are as follows:

The FST and SLW instruction cannot be used.

The STP, WIT, MUL, and DIV instruction can be used.

CPU mode register

The CPU mode register is allocated at address 003B16.

The CPU mode register contains the stack page selection bit.

Fig. 1 Structure of CPU mode register

CPU mode register

(CPUM : address 003B16)

b7

b0

Stack page selection bit

0 : 0 page

1 : 1 page

Not used (return “0” when read)

Processor mode bits

b1 b0

0

0 : Single-chip mode

0

1 : Memory expansion mode

1

0 : Microprocessor mode

1

1 : Not available

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M38025M6 Datasheet(PDF) 8 Page - Mitsubishi Electric Semiconductor

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