M37211M2 View Datasheet(PDF) - Renesas Electronics

Part Name

Description

Manufacturer

M37211M2

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER

Renesas Electronics 

MITSUBISHI MICROCOMPUTERS

M37210M3-XXXSP/FP, M37210M4-XXXSP, M37211M2-XXXSP

M37210E4-XXXSP/FP, M37210E4SP/FP

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER

with ON-SCREEN DISPLAY CONTROLLER

FUNCTIONAL DESCRIPTION

Central Processing Unit (CPU)

The M37210M3-XXXSP/FP 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 details

on the instruction set.

Machine-resident 740 family instructions are as follows :

The FST and SLW instruction cannot be used.

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

CPU Mode Register

The CPU mode register is allocated at address 00FB16. The CPU

mode register contains the stack page selection bit.

7

11111

0

00

CPU mode register

(CPUM : address 00FB16)

Fix these bits to “002”

Stack page selection bit (Note)

0 : Zero page

1 : 1 page

Fix these bits to “11112”

Note : Please beware of this bit when programming because it is set to “1” after the reset release.

Especially the internal RAM of the M37211M2-XXXSP is in the zero page, so be sure to set this bit to “0”.

Fig. 1 Structure of CPU mode register

6

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