M37212 datasheet, PDF - EEWORLD Datasheet

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M37212: DescriptionSINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER; File Size1MB，119 Pages; ManufacturerMitsubishi; Websitehttp://www.mitsubishielectric.com/semiconductors/

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M37212 Overview

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER

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MITSUBISHI MICROCOMPUTERS

M37212M4/M8–XXXSP, M37212M6–XXXSP/FP

M37212EFSP/FP

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER

with ON-SCREEN DISPLAY CONTROLLER

1. DESCRIPTION

The M37212M6-XXXSP/FP, M37212M4/M8-XXXSP are single-chip

microcomputers designed with CMOS silicon gate technology. They

have a OSD, I

C-BUS interface, and PWM, so it is useful for a chan-

nel selection system for TV.

The feature of the M37212EFSP/FP are similar to those of the

M37212M6-XXXSP/FP except that these chips have a built-in PROM

which can be written electrically. The differences between the

M37212M6-XXXSP/FP and M37212M4/M8-XXXSP are the ROM size

and the RAM size as shown below. Accordingly, the following de-

scriptions will be for M37212M6-XXXSP/FP unless otherwise noted.

qOSD

function

Display characters ................................... 24 characters

2 lines

(It is possible to display 3lines or more by software)

Kinds of characters ........................................................ 256 kinds

Character display area .............................................. 12

16 dots

Kinds of character sizes ..................................................... 3 kinds

Kinds of character colors .................................. 8 colors (R, G, B)

Coloring unit ................... character, character background, raster

Display position .............................................................................

Horizontal: 64 levels

Vertical: 128 levels

Attribute .............................................................................. border

2. FEATURES

Number

3. APPLICATION

of basic instructions ..................................................... 71

Memory size

ROM............... ......... 16K bytes (M37212M4-XXXSP)

24K bytes (M37212M6-XXXSP/FP)

32K bytes (M37212M8-XXXSP)

62K bytes (M37212EFSP/FP)

RAM ......................... 320 bytes (M37212M4-XXXSP)

384 bytes (M37212M6-XXXSP/FP)

576 bytes (M37212M8-XXXSP)

1280 bytes (M37212EFSP/FP)

(*ROM correction memory included)

The minimum instruction execution time

......................................... 0.5

µs

(at 8 MHz oscillation frequency)

Power source voltage .................................................. 5 V

10 %

Subroutine nesting

maximum 96 levels (M37212M4/M8-XXXSP, M37212M6-XXXSP/FP)

maximum 128 levels (M37212EFSP/FP)

Interrupts ........................................................ 14 types, 14 vectors

8-bit timers ................................................................................... 4

Programmable I/O ports

(Ports P0, P1

–P1

, P2, P3

, P3

) ............................. 25

Input ports (Ports P1

–P1

, P3

–P3

, P4

) ............................... 10

Output ports (Ports P5

–P5

–P6

) ....................................... 8

12 V withstand ports .................................................................. 12

LED drive ports ............................................................................ 4

Serial I/O ............................................................. 8-bit

1 channel

Multi-master I

C-BUS interface ............................... 1 (2 systems)

A-D comparator (6-bit resolution) ................................. 8 channels

PWM output circuit .......................................... 14-bit

1, 8-bit

Power dissipation .............................................................. 165 mW

(at 8 MHz oscillation frequency, V

=5.5V, at OSD display)

ROM correction function ................................................. 2 vectors

Note:

Only M37212M8-XXXSP and M37212EFSP/FP have ROM

correction function.

Rev. 1.0

M37212 Related Products

	M37212	M37212M6-XXXSP/FP	M37212M8-XXXSP	M37212M4	M37212M4-XXXSP	M37212EFSP/FP
Description	SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER	SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER	SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER	SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER	SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER	SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER

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