M37225M8 datasheet(1/133 Pages) MITSUBISHI

Part #	M37225M8

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

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Manufacturer	MITSUBISHI [Mitsubishi Electric Semiconductor]

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1. DESCRIPTION

The M37225M6-XXXSP, M37225M8-XXXSP, and M37225ECSP are

single-chip microcomputers designed with CMOS silicon gate tech-

nology. They have a OSD, I2C-BUS interface, PWM output, and 12 V

withstand, so it is useful for a channel selection system for TV.

The features of the M37225ECSP are similar to those of the

M37225M6-XXXSP except that the chip has a built-in PROM which

can be written electrically. The difference between M37225M6-XXXSP

and M37225M8-XXXSP are the ROM size. Accordingly, the follow-

ing descriptions will be for the M37225M6-XXXSP.

2. FEATURES

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

qMemory size

ROM ..................... 24K bytes (M37225M6-XXXSP)

32K bytes (M37225M8-XXXSP)

48K bytes (M37225ECSP)

RAM ...................... 1024 bytes (M37225M6-XXXSP,

M37225M8-XXXSP)

2048 bytes (M37225ECSP)

(*ROM correction memory included)

qMinimum instruction execution time

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

µs (at 8 MHz oscillation frequency)

qPower source voltage ................................................. 5 V

± 10 %

qSubroutine nesting ............................................. 128 levels (Max.)

qInterrupts ....................................................... 16 types, 16 vectors

q8-bit timers .................................................................................. 4

qProgrammable I/O ports (Ports P0, P1, P2, P30–P32, P35) ..... 28

qInput ports (Ports P33, P34, P50, P51) ........................................ 4

qOutput ports (Ports P52–P55) ..................................................... 4

q12 V withstand ports ................................................................... 6

qLED drive ports ........................................................................... 4

qSerial I/O ............................................................ 8-bit ! 1 channel

qMulti-master I2C-BUS interface .............................. 1 (2 systems)

qA-D converter (8-bit resolution) .................................... 8 channels

qPWM output circuit ........................................ 14-bit ! 2, 8-bit ! 6

qPower dissipation

In operating ...................................................................... 165 mW

(at VCC = 5.5V, 8 MHz oscillation frequency, and OSD on)

qROM correction function ................................................ 3 vectors

qImmediate return mode from wait state

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER

with ON-SCREEN DISPLAY CONTROLLER

M37225M6-XXXSP, M37225M8-XXXSP

M37225ECSP

MITSUBISHI MICROCOMPUTERS

qOSD function

Display characters ............................................... 24 characters ! 2 lines

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

Kinds of characters ......... 381 kinds

Character display area

16 ! 20 dots

Kinds of character sizes .............................. Block display: 3 kinds

SPRITE display: 1 kinds

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

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

Display position

Horizontal: 64 levels

Vertical :255 levels

Attribute ........ Border (all-bordered, shadow-bordered), BUTTON

SPRITE display function

Wallpaper function

Window function

Corresponding to bi-scan mode

3. APPLICATION

TV

Rev. 1.1

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