GDM12864A View Datasheet(PDF) - Unspecified

Part Name

Description

Manufacturer

GDM12864A

Liquid Crystal Display Module

Unspecified 

64CH Common Driver For Dot Matrix LCD 11

FUNCTIONAL DESCRIPTION

1.RC Oscillator

The RC Oscillator generates CL2, M, FRM, of the KS0107B and CLK1, CLK2 of the KS0107B by the

oscillation resister R and capacitor C.

When selecting the master/slave, oscillation circuit is as following:

1) Master Mode

KS0107B

R CR

C

Rf

Cf

KS0107B

R CR

C

open

open

External clock

2) Slave Mode

KS0107B

R CR

open

VDD

C

open

2.Timing Generation circuit

It generates CL2, M, FRM, CLK1, and CLK2 by the frequency from oscillation circuit.

1) Selection of Master/Slave (M/S)

When M/S is “H”, it generates CL2, M, FRM, CLK1, and CLK2 internally. When M/S is “L”,

it operates by receiving M, CLK2 from master device.

2) Frequency Selection (FS)

To adjust FRM by 70Hz, the oscillation frequency should be as following:

FS Oscillation Frequency

H fOSC=430KHz

L

fOSC=215KHz

In the slave mode, it is connected to VDD.

© 1998 Intech LCD Group Ltd.

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