PT6553_10 Datasheet, PDF (10/41 Pages) Princeton Technology Corp – LCD Driver IC with Key Input Function

LCD Driver IC with Key Input Function
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PT6553
SEGMENT OUTPUT/GENERAL PURPOSE OUTPUT PORTS SELECTION DATA
BITS: P0, P1
P1 and P0 are control data bits which may be used for segment output port or general purpose output
port.
Control Data
P0 P1
0
0
0
1
1
0
1
1
SG1/P1
SG1
P1
P1
P1
State of Output Pin
SG2/P2 SG3/P3
SG2
SG3
P2
SG3
P2
P3
P2
P3
SG4/P4
SG4
SG4
SG4
P4
Condition 1: P0 and P1 are selected as General Purpose Output Port
When the control data bits, P0 and P1 are selected as General Purpose Output Port, the
corresponding display data and output pins are listed below.
Output Pin
SG1/P1
SG2/P2
SG3/P3
SG4/P4
Corresponding Display Data
D1
D4
D7
D10
This means that, if for example the output pin -- SG4/P4 is used as a General Purpose Output Port,
SG4/P4 Pin will output a high level when the display data , D10 is given a value of "1".
PT6553 V1.7
- 10 -
November, 2007