INTEGRATED CIRCUITS
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PCF1303T
18-element bar graph LCD driver
Product specification
File under Integrated Circuits, IC01
November 1986
Philips Semiconductors Product specification
18-element bar graph LCD driver PCF1303T
GENERAL DESCRIPTION
The PCF1303T is an 18-element bar graph LCD driver with linear relation to control voltage (Vc) when in pointer or
thermometer mode.
Fig.1 Block diagram.
PACKAGE OUTLINE
PCF1303T: 28-lead mini-pack; plastic (SO28; SOT136A); SOT136-1; 1996 September 02.
November 1986 2
Philips Semiconductors Product specification
18-element bar graph LCD driver PCF1303T
PIN DESCRIPTION
PIN NO. SYMBOL NAME AND FUNCTION
1V
4I
5V
6 to 23 Q
24 Q
25 V
26 V
27 V
28 V
osc
1
SS
to Q
1
R
c
ref min
ref max
DD
FUNCTION TABLE
oscillator pin
mode select input
ground (0 V)
segment outputs
18
back-plane output
control voltage
reference voltage inputs
positive supply voltage
I
1
L pointer
H thermometer
H = HIGH voltage level
L = LOW voltage level
MODE
(1) Pins 2 and 3 should be connected to VSS.
Fig.2 Pin configuration.
November 1986 3