pcf8534a NXP Semiconductors, pcf8534a Datasheet - Page 5

• Manufacturer Part Number: pcf8534a
• Description: Universal Lcd Driver For Low Multiplex Rates
• Manufacturer: NXP Semiconductors

NXP Semiconductors
7. Functional description
PCF8534A_3
Product data sheet
6.2 Pin description
Table 3.
[1]
The PCF8534A 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 60 segments.
The display configurations possible with the PCF8534A depend on the number of active
backplane outputs required. Display configuration selection is shown in
display configurations can be implemented in the typical system shown in
Table 4.
Symbol
S31 to S59
BP0 to BP3
n.c.
SDA
SCL
CLK
V
SYNC
OSC
A0 to A2
SA0
V
V
S0 to S30
Backplanes
4
3
2
1
DD
SS
LCD
The substrate (rear side of the die) is wired to V
Pin description
Selection of display configurations
Pin
SOT315
1 to 29
30 to 33
34 to 37
38
39
40
41
42
43
44 to 46
47
48
49
50 to 80
Segments
240
180
120
60
Rev. 03 — 10 November 2008
Bare die
44 to 72
73 to 76
-
1
2
3
4
5
6
7 to 9
10
11
12
13 to 43
[1]
7-segment numeric
Digits
30
22
15
7
Description
LCD segment output 31 to 59
LCD backplane output 0 to 3
not connected
I
I
external clock input and output
supply voltage
cascade synchronization input and output (active LOW)
enable input for internal oscillator
subaddress counter input 0 to 2
I
ground
input of LCD supply voltage
LCD segment output 0 to 30
2
2
2
C-bus serial data input and output
C-bus serial clock input
C-bus slave address input 0
Indicator
symbols
30
26
15
11
SS
Universal LCD driver for low multiplex rates
but should not be electrically connected.
14-segment numeric
Characters Indicator
16
12
8
4
symbols
16
12
8
4
PCF8534A
© NXP B.V. 2008. All rights reserved.
Table
Figure
Dot matrix
240 (4
180 (3
120 (2
60 (1
4. All of the
4.
60)
5 of 44
60)
60)
60)