Product data

PCF8534A All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved.
Product data sheet Rev. 6 — 25 July 2011 6 of 52
NXP Semiconductors
PCF8534A
Universal LCD driver for low multiplex rates
6.2 Pin description
[1] The substrate (rear side of the die) is connected to V
SS
and should be electrically isolated.
Table 3. Pin description
Symbol Pin Type Description
SOT315-1 Wire bond die
S31 to S59 1 to 29 44 to 72 output LCD segment output 31 to 59
BP0 to BP3 30 to 33 73 to 76 output LCD backplane output 0 to 3
n.c. 34 to 37 - - not connected; do not connect and do
not use as feed through
SDA 38 1 input/output I
2
C-bus serial data input and output
SCL 39 2 input I
2
C-bus serial clock input
CLK 40 3 input/output external clock input and internal clock
output
V
DD
41 4 supply supply voltage
SYNC
42 5 input/output cascade synchronization input and
output (active LOW)
OSC 43 6 input enable input for internal oscillator
A0 to A2 44 to 46 7 to 9 input subaddress counter input 0 to 2
SA0 47 10 input I
2
C-bus slave address input 0
V
SS
48 11
[1]
supply ground
V
LCD
49 12 supply input of LCD supply voltage
S0 to S30 50 to 80 13 to 43 output LCD segment output 0 to 30