M35054 データシートの表示（PDF） - Mitsumi

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M35054

SCREEN CHARACTER and PATTERN DISPLAY CONTROLLERS

Mitsumi 

MITSUBISHI MICROCOMPUTERS

M35054-XXXFP/M35055-XXXFP

SCREEN CHARACTER and PATTERN DISPLAY CONTROLLERS

PIN DESCRIPTION

Symbol

Pin name

OSC1

TESTA

__

CS

Clock input

Test pin input

Chip select input

SCK

Serial clock input

SIN

Serial data input

__

AC

VDD2

CVIDEO

Auto-clear input

Power pin

Composite video

signal output

LECHA Character level input

CVIN

VSS

TESTC

TESTB

P0

P1

VSS

OSCIN

Composite video

signal input

Earthing pin

Test pin output

Test pin input

Port P0 output

Port P1 output

Earthing pin

fSC input pin for

synchronous signal

generation

CP2

HOR

Filter output

Horizontal synchro-

nizing signal input

VDD1

Power pin

Input/

Output

Input

—

Input

Input

Input

Input

—

Output

Input

Input

—

—

—

Output

Output

—

Input

Output

Input

—

Function

This is the filter output pin 1.

This is the pin for test. Connect this pin to GND during normal operation.

This is the chip select pin, and when serial data transmission is being carried out, it goes

to “L”. Hysteresis input. Built-in pull-up resistor.

__

When CS pin is “L”, SIN serial data is taken in when SCK rises. Hysteresis input. Built-in

pull-up resistor.

This is the pin for serial input of data and addresses for the display control register and

the display data memory. Hysteresis input. Built-in pull-up resistor.

When “L”, this pin resets the internal IC circuit. Hysteresis input. Built-in pull-up resistor.

Please connect to +5V with the analog circuit power pin.

This is the output pin for composite video signals. It outputs 2VP-P composite video

signals. In superimpose mode, character output etc. is superimposed on the external

composite video signals from CVIN.

This is the input pin which determines the “white” character color level in the composite

video signal.

This is the input pin for external composite video signals. In superimpose mode, character

output etc. is superimposed on these external composite video signals.

Please connect to GND using circuit earthing pin.

This is the pin for test. Open this pin during normal operation.

This is the pin for test. Connect this pin to GND during normal operation.

This pin outputs the port output or BLNK1 (character background) signal.

This pin outputs the port output or CO1(character) signal.

Please connect to GND using circuit earthing pin (Analog side).

This is the input pin for the sub-carrier frequency (fSC) for generating a synchronous

signal.

A frequency of 3.580MHz is needed for NTSC, and a frequency of 4.434MHz in needed

for PAL and 3.576MHz is needed for M-PAL.

Filter output pin 2.

This is the input pin for external composite video signals. This pin inputs the external

video signal clamped sync-chip to 1.5V, and internally carries out synchronous separa-

tion.

Please connect to +5V with the digital circuit power pin.

2

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