NJU6533 데이터 시트보기 (PDF) - Japan Radio Corporation

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NJU6533

1/3, 1/4 Duty LCD Driver

Japan Radio Corporation  

NJU6533

! FUNCTION DESCRIPTION

(1) Block Function

• Oscillator

The oscillator includes a built-in capacitor and an external resistor. It generates clock signal for LCD driving.

use external clock, input the clock signal to OSC1 and keep OSC2 open.

When

• Decoder

Input serial data is decoded and sent to the appropriate block.

• Command Register

Command data is written to this 8 bits command register to control NJU6533 operation.

• Display Data Register

Data is written to this 8 bits register as display data.

• Latch Circuit

Data stored in display data register is assigned to the corresponding SEG/port.

• Segment Driver/General Purpose Ports

Basing on display data, segment drivers output LCD SEG driving signal.

And, SEG29/P1 ~ SEG32/P4 pins can be selected as segment driver output or general-purpose ports by instruction.

• Common Driver

Common drivers output LCD COM driving signal.

• Power On Reset

When power is on, NJU6533 is automatically initialized. And if RSTb=”L”, NJU6533 is reset too.

Ver.2004-03-05

-3-

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