PCF2100C Просмотр технического описания (PDF) - Philips Electronics

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Компоненты Описание

производитель

PCF2100C

LCD drivers

Philips Electronics 

Philips Semiconductors

LCD drivers

7.6 Input circuitry

handbook, halfpaBgUeS DRIVER

VDD2

VDD

PCF21XXC

R

100 kΩ

VSS VSS

MLD284

Product specification

PCF21xxC family

VSS line is common. In systems where it is expected that VDD2 > VDD1 + 0.5 V, a resistor should be inserted to reduce the current flowing through the

input protection. Maximum input current ≤40 µA.

Fig.10 Input circuitry.

7.7 Expansion

handbook, full pagewidth

LCD

DATA

CLB

DLEN1

DLEN2

DLEN3

BP1 BP2 S1 to S32

VDD

DLEN

CLB PCF2111C OSC

DATA

VSS

MASTER

BP1 BP2 S1 to S32

DLEN

CLB

PCF2111C OSC

DATA

VSS

SLAVE1

BP1 BP2 S1 to S32

DLEN

CLB

PCF2111C OSC

DATA

VSS

SLAVE1

MLD293

By connecting OSC to VSS the BP pins become inputs and generate signals synchronized to the single oscillator frequency, thus allowing expansion of

several members of the PCF21xxC family up to the BP drive capability of the master. The PCF2112C can only function as a master for other PCF2112Cs.

Fig.11 Expansion possibility (using PCF2111C).

1997 Mar 28

11

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