pcf8532 NXP Semiconductors, pcf8532 Datasheet - Page 4

• Manufacturer Part Number: pcf8532
• Description: Universal Lcd Driver For Low Multiplex Rates
• Manufacturer: NXP Semiconductors

NXP Semiconductors
7. Functional description
PCF8532_1
Product data sheet
6.2 Pin description
Table 3.
[1]
[2]
The PCF8532 is a versatile peripheral device designed to interface any
microprocessor or microcontroller to a wide variety of LCDs. It can directly drive any static
or multiplexed LCD containing up to four backplanes and up to 160 segments.
The display configurations possible with the PCF8532 depend on the number of active
backplane outputs required. A selection of display configurations is shown in
All of the display configurations can be implemented in a typical system as shown in
Figure
Table 4.
Symbol
SDAACK
SDA
SCL
CLK
V
SYNC
OSC
T1, T2 and T3
A0 and A1
SA0
V
V
BP2 and BP0
S0 to S79
BP0, BP2, BP1 and BP3 112 to 115
S80 to S159
BP3 and BP1
Number of
Backplanes
4
3
2
1
DD
SS
LCD
In most applications SDA and SDAACK can be tied together.
The substrate (rear side of the die) is wired to V
3.
Pin description
Possible display configurations
Elements Digits
640
480
320
160
Rev. 1 — 10 February 2009
Pin
1 to 3
4 to 6
7 to 9
10
11 to 13
14
15
16, 17 and 18 to 20
21, 22
23
24 to 26
27 to 29
30, 31
32 to 111
116 to 195
196, 197
7-segment numeric
80
60
40
20
Indicator
symbols
80
60
40
20
SS
Universal LCD driver for low multiplex rates
but should not be electrically connected.
14-segment numeric
Characters Indicator
40
32
20
10
[1]
[1]
[2]
Description
I
I
I
clock input/output
supply voltage
cascade synchronization input/output
selection of internal or external clock
dedicated testing pins; to be tied to
V
subaddress inputs
I
logic ground
LCD supply voltage
LCD backplane outputs
LCD segment outputs
LCD backplane outputs
LCD segment outputs
LCD backplane outputs
2
2
2
2
SS
C-bus acknowledge output
C-bus serial data input
C-bus serial clock input
C-bus slave address input
in application mode
symbols
80
32
40
20
PCF8532
© NXP B.V. 2009. All rights reserved.
Dot matrix
640 dots (4
480 dots (3
320 dots (2
160 dots (1
Table
4.
160)
160)
160)
160)
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