PCF2112C Ver la hoja de datos (PDF) - Philips Electronics
Número de pieza
componentes Descripción
Fabricante
PCF2112C Datasheet PDF : 24 Pages
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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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