NXP Semiconductors
PCA85132
LCD driver for low multiplex rates
5. Block diagram
BP0 BP1 BP2 BP3
S0 to S159
160
V LCD
LCD
VOLTAGE
BACKPLANE
OUTPUTS
DISPLAY SEGMENT OUTPUTS
DISPLAY REGISTER
V SS
LCD BIAS
GENERATOR
SELECTOR
DISPLAY
CONTROL
PCA85132
OUTPUT BANK SELECT
AND BLINK CONTROL
DISPLAY
CLK
SYNC
CLOCK SELECT
AND TIMING
BLINKER
TIMEBASE
RAM
OSC
SCL
SDA
OSCILLATOR
INPUT
FILTERS
POWER-ON
RESET
I 2 C-BUS
CONTROLLER
COMMAND
DECODE
WRITE DATA
CONTROL
DATA POINTER AND
AUTO INCREMENT
SUBADDRESS
COUNTER
SA0
SDAACK
T1
T2
T3
V DD
A0
A1
013aaa059
Fig 1.
Block diagram of PCA85132
PCA85132
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 11 July 2013
? NXP B.V. 2013. All rights reserved.
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