M37207M8-059SP datasheet(11/121 Pages) MITSUBISHI

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MITSUBISHI MICROCOMPUTERS

M37207MF-XXXSP/FP, M37207M8-XXXSP

M37207EFSP/FP

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER

and ON-SCREEN DISPLAY CONTROLLER

FUNCTIONAL DESCRIPTION

Central Processing Unit (CPU)

This microcomputer uses the standard 740 Family instruction set.

Refer to the table of 740 Family addressing modes and machine

instructions 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, SLW instruction cannot be used.

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

CPU Mode Register

The CPU mode register contains the stack page selection bit and

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

cated at address 00FB16.

Fig. 3. CPU Mode Register

b7 b6 b5 b4 b3 b2 b1 b0

After reset RW

CPU Mode Register

0, 1

Name

Functions

Processor mode bits

(CM0, CM1)

0 0: Single-chip mode

0 1:

1 0:

Not available

1 1:

Fix these bits to “1.”

Stack page selection

bit (CM2) (See note 1)

b1 b0

0: 0 page

1: 1 page

CPU mode register (CPUM) (CM) [Address 00FB 16]

Main Clock (X IN–XOUT)

stop bit

(CM6)

XCOUT drivability

selection bit (CM5)

0: LOW drive

1: HIGH drive

0: Oscillating

1: Stopped

Internal system clock

selection bit

(CM7)

0: XIN–XOUT selected

(high-speed mode)

1: XCIN–XCOUT selected

(high-speed mode)

Notes 1: This bit is set to “1” after the reset release.

2: The internal system clock

φ stops at HIGH.

Internal system clock

output selection bit

(CM4) (See note 2)

0: Output is stopped

1: Internal system

clock

φ output

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