M37630E4FS View Datasheet(PDF) - MITSUBISHI ELECTRIC

Part Name

Description

Manufacturer

M37630E4FS

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

MITSUBISHI ELECTRIC  

MITSUBISHI MICROCOMPUTERS

7630 Group

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

FUNCTIONAL DESCRIPTION

Central Processing Unit (CPU)

The core of 7630 group microcomputers is the 7600 series CPU.

This core is based on the standard instruction set of 740 series;

however the performance is improved by allowing to execute the

same instructions as that of the 740 series in less cycles. Refer to

the 7600 Series Software Manual for details of the instruction set.

CPU Mode Register CPUM

The CPU mode register contains the stack page selection bit and

internal system clock selection bit. The CPU mode register is allo-

cated to address 000016.

7

0

CPU mode register (address 000016)

CPUM

Processor mode bits (set these bits to “00”)

b1 b0

0 0: Single–chip mode

0 1: Not used

1 0: Not used

1 1: Not used

Stack page selection bit

0 : 0 page

1 : 1 page

Not used (“0” when read, do not write “1”)

Internal system clock selection bit

0 : φ=f(XIN) divided by 2 (high–speed mode)

1 : φ=f(XIN) divided by 8 (middle–speed mode)

Not used (“0” when read, do not write “1”)

Fig. 5 Structure of CPU mode register

6

MITSUBISHI

ELECTRIC

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