PCF8534A datasheet(6/52 Pages) NXP

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PCF8534A

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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 VSS and should be electrically isolated.

Table 3.

Pin description

Symbol

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

input/output

I2C-bus serial data input and output

SCL

input

I2C-bus serial clock input

CLK

input/output

external clock input and internal clock

output

VDD

supply

supply voltage

SYNC

input/output

cascade synchronization input and

output (active LOW)

OSC

input

enable input for internal oscillator

A0 to A2

44 to 46

7 to 9

input

subaddress counter input 0 to 2

SA0

input

I2C-bus slave address input 0

VSS

11[1]

supply

ground

VLCD

supply

input of LCD supply voltage

S0 to S30

50 to 80

13 to 43

output

LCD segment output 0 to 30

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