pcf8814 NXP Semiconductors, pcf8814 Datasheet - Page 6

• Manufacturer Part Number: pcf8814
• Description: Pcf8814 65 X 96 Pixels Matrix Lcd Driver
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Notes
1. V
2. Having the acknowledge output separated from the serial data line is advantageous; in COG applications where the
2003 Mar 13
C0 to C95
R0 to R64
dummy
65
supply lines must be connected together. When the V
supplied to V
V
LCD supply voltage may be switched off.
track resistance from the SDAHOUT pad to the system SDAH line can be significant, a potential divider is generated
by the bus pull-up resistor and the ITO track resistance. It is possible that during the acknowledge cycle the PCF8814
will not be able to create a valid logic 0 level. By splitting the SDAH input from the SDAHOUT output the device could
be used in a mode that ignores the acknowledge bit. In COG applications where the acknowledge cycle is required,
it is necessary to minimize the track resistance from the SDAHOUT pad to the system SDAH line to guarantee a valid
LOW level. When not used it must be connected to V
SYMBOL
LCDIN
DD3
should be applied according to the specified voltage range. If the PCF8814 is in power-down mode, the external
96 pixels matrix LCD driver
is the positive power supply for the liquid crystal display. If the internal V
LCDIN
280, 281, 315 to 318
99 to 112, 119, 120,
52 to 65, 68 to 81,
, then V
123 to 147, 231,
1 to 4,18 to 21,
279 to 232,
314 to 283,
230 to 184
149 to 181
PAD
LCDOUT
must be left open-circuit, V
LCD column driver outputs
LCD row driver outputs
dummy pads
DD1
LCD
6
or V
generator is disabled and an external voltage is to be
LCDSENSE
SS1
.
DESCRIPTION
must be connected to V
LCD
generator is used, then all three
Objective specification
LCDIN
PCF8814
, and V
DD2
and