M37207MF datasheet(13/122 Pages) RENESAS

13 / 122 page

MITSUBISHI MICROCOMPUTERS

M37207MF-XXXSP/FP, M37207M8-XXXSP

M37207EFSP/FP

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER

and ON-SCREEN DISPLAY CONTROLLER

MEMORY

Special Function Register (SFR) Area

The special function register (SFR) area in the zero page contains

control registers such as I/O ports and timers.

RAM

RAM is used for data storage and for stack area of subroutine calls

and interrupts.

ROM

ROM is used for storing user programs as well as the interrupt vector

area.

RAM for Display

RAM for display is used for specifying the character codes and col-

ors to display.

ROM for Display

ROM for display is used for storing character data.

Interrupt Vector Area

The interrupt vector area contains reset and interrupt vectors.

Zero Page

The 256 bytes from addresses 000016 to 00FF16 are called the zero

page area. The internal RAM and the special function registers (SFR)

are allocated to this area.

The zero page addressing mode can be used to specify memory and

only 2 bytes is possible in the zero page addressing mode.

Special Page

The 256 bytes from addresses FF0016 to FFFF16 are called the spe-

cial page area. The special page addressing mode can be used to

specify memory addresses in the special page area. Access to this

area with only 2 bytes is possible in the special page addressing

mode.

Fig. 4. Memory Map

ROM Correction Memory (RAM)

This is used as the program area for ROM correction.

000016

00C016

00FF16

01FF16

033F16

080016

SFR area

Not used

FFFF16

FFDE16

FF0016

030016

Interrupt vector area

Not used

1000016

11FFF16

1FFFF16

ROM

for display

(8 K bytes)

for M37207M8

Special page

ROM

(32 K bytes)

for M37207M8

RAM

for display

(144 bytes)

(See note)

Zero page

Note: Refer to Table 9. Contents of CRT display RAM.

020416

021B16

02C016

02FF16

2 page register

Not used

06D716

060016

Not used

ROM correction memory (64 bytes)

Block 1: addresses 02C0 16 to 02DF16

Block 2: addresses 02E0 16 to 02FF16

800016

04FF16

12FFF16

ROM

for display

(12 K bytes)

for M37207MF

ROM

(62 K bytes)

for M37207MF

RAM

(512 bytes)

for M37207M8

RAM

(960 bytes)

for M37207MF

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