2003 Apr 14 5
Philips Semiconductors Product specification
LCD row/column driver for
dot matrix graphic displays
PCF8578
6 PINNING
SYMBOL
PIN
DESCRIPTION
VSO56 LQFP64
SDA 1 7 I
2
C-bus serial data input/output
SCL 2 8 I
2
C-bus serial clock input
SYNC 3 9 cascade synchronization output
CLK 4 10 external clock input/output
V
SS
5 11 ground (logic)
TEST 6 12 test pin (connect to V
SS
)
SA0 7 13 I
2
C-bus slave address input (bit 0)
OSC 8 16 oscillator input
V
DD
9 20 positive supply voltage
V
2
to V
5
10 to 13 21 to 24 LCD bias voltage inputs
V
LCD
14 25 LCD supply voltage
n.c. 15, 16 14, 15, 17 to 19,
26 to 28, 36, 47
not connected
C39 to C32 17 to 24 29 to 35, 37 LCD column driver outputs
R31/C31 to R8/C8 25 to 48 38 to 46, 48 to 62 LCD row/column driver outputs
R7 to R0 49 to 56 63, 64, 1 to 6 LCD row driver outputs
