ML9041A データシートの表示（PDF） - Oki Electric Industry

部品番号

コンポーネント説明

メーカー

ML9041A

DOT MATRIX LCD CONTROLLER DRIVER

Oki Electric Industry 

OKI Semiconductor

PEDL9041A-02

ML9041A-xxA/xxB

PIN DESCRIPTIONS

Symbol

R/W

RS0, RS1

E

DB0 to DB3

DB4 to DB7

OSC1

OSC2

OSCR

COM1 to COM17

SEG1 to SEG100

Description

The input pin with a pull-up resistor to select Read (“H”) or Write (“L”) in the Parallel I/F

Mode.

This pin should be open in the Serial l/F Mode.

The input pins with a pull-up resistor to select a register in the Parallel l/F Mode.

RS1

RS0

Name of register

H

H

Data register

H

L

Instruction register

L

L

Expansion Instruction register

This pin should be open in the Serial I/F Mode.

The input pin for data input/output between the CPU and the ML9041A and for

activating instructions in the Parallel l/F Mode.

This pin should be open in the Serial l/F Mode.

The input/output pins to transfer data of lower-order 4 bits between the CPU and the

ML9041A in the Parallel l/F Mode. The pins are not used for the 4-bit interface and

serial interface.

Each pin is equipped with a pull-up resistor, so this pin should be open when not used.

The input/output pins to transfer data of upper 4 bits between the CPU and the

ML9041A in the Parallel l/F Mode. The pins are not used for the serial interface.

Each pin is equipped with a pull-up resistor, so this pin should be open in the Serial I/F

Mode when not used.

The clock oscillation pins required for LCD drive signals and the operation of the

ML9041A by instructions sent from the CPU.

To input external clock, the OSC1 pin should be used. The OSCR and the OSC2 pins

should be open.

To start oscillation with an external resistor, the resistor should be connected between

the OSC1 and OSC2 pins. The OSCR pin should be open.

To start oscillation with an internal resistor, the OSC2 and OSCR pins should be

short-circuited outside the ML9041A. The OSC1 pin should be open.

The LCD common signal output pins.

For 1/9 duty, non-selectable voltage waveforms are output via COM10 to COM17. For

1/12 duty, non-selectable voltage waveforms are output via COM13 to COM17.

The LCD segment signal output pins.

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