PCF8537 Datasheet, PDF (6/82 Pages) NXP Semiconductors – Industrial LCD driver for multiplex rates up to 1:8

NXP Semiconductors
PCF8537
Industrial LCD driver for multiplex rates up to 1:8
7.2 Pin description
Table 3.
Pin
1 to 32
33
34
35
36
37, 38,
40
39
41
42
43
44
45 to 50
51
52
53 to 64
Pin description of PCF8537AH and PCF8537BH
Symbol
Type
Description
PCF8537AH PCF8537BH
S31 to S0
output
LCD segments
RESET
input
active low reset input
SDA
input/output I²C-bus serial data
CE
input
SPI-bus chip enable - active LOW
SCL
input
I²C-bus serial clock
SCL
input
SPI-bus serial clock
A0
input
I²C-bus slave address selection
SDIO
input/output SPI-bus serial data
T1 to T3
input
test pins; must be tied to V_SS in
applications
CLK
input/output internal oscillator output, external
oscillator input
VSS
supply
ground supply
VDD1
supply
supply voltage 1
VDD2
supply
supply voltage 2
VLCD^[1]
supply
LCD supply^[2]
BP0 to BP5
output
LCD backplanes
S45/BP6
output
LCD segments for 1:6 multiplex drive
mode;
S44/BP7
output
LCD backplanes for 1:8 multiplex drive
mode
S43 to S32
output
LCD segments
[1] V_LCD must be equal to or greater than V_DD2.
[2] When the internal V_LCD generation is used, this pin drives the V_LCD voltage. In this case pin VLCD is an
output. When the external supply is requested, then pin VLCD is an input and V_LCD can be supplied on it. In
this case, the internal charge pump must be disabled (see Table 8).
PCF8537
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 31 May 2012
© NXP B.V. 2012. All rights reserved.
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