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PT6552 Datasheet(PDF) 4 Page - Princeton Technology Corp

Part # PT6552
Description  쩍 Duty LCD Driver with On-Chip Key Input Function
PDF  22 Pages
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Manufacturer  PTC [Princeton Technology Corp]
Direct Link  http://www.princeton.com.tw
Logo PTC - Princeton Technology Corp

PT6552 Datasheet(HTML) 4 Page - Princeton Technology Corp

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PT6552
V1.3
4
July 2010
PIN CONFIGURATIONS
Pin Name
I/O
Function
Active
Handing when
unused
Pin No.
SG1/P1 to SG4/P4
SG5 to SG43
O
Segment outputs: Used to output the display data that is
transmitted over the serial data input. Pins SG1/P1 to
SG4/P2 can be used as general-purpose outputs
according to control data specification.
-
Open
1 to 4
5 to 43
COM1
COM2
O
Common driver outputs.
The frame frequency fo is (fosc/512)Hz
-
Open
44
45
KS1/SG44,
KS2/SG45,
KS3 to KS6
O
Key scan outputs. When a key matrix is formed,
normally a diode will be attached to the key scan timing
line to prevent shorts. However, since the output
transistor impedance is an unbalanced CMOS output, it
will not be damaged if shorted. Pins KS1/SG44 and
KS2/SG45 can be used as segment outputs according
to control data specification.
-
Open
46
47
48 to 51
KI1 to KI5
I
Key scan inputs: Pin with a built-in pull-down resistor.
H
GND
52 to 56
OSC
I/O
Oscillator connection: Oscillator circuit can be formed by
connecting the pin to a resistor and a capacitor
-
VDD
57
VSS
-
Power supply ground connected. Must be connected to
GND.
-
-
58
/RES
I
Reset input that re-initializes the LSI internal states.
During a reset, the display segments are turned off
forcibly regardless of the internal display data. All
internal key data is reset to low and the key scan
operation is disabled. However, serial data can input
during a reset.
L
GND
59
VDD
-
Power supply connection. A supply voltage of between
4.5 and 6.0V must be provided.
-
-
60
DO
O
Serial data interface:
Connected to the controller.
Since DO is an open-drain
output, it required a pull-up
resistor.
CE: Chip enable
CLK: Synchronization
clock
DI: Transfer data
DO: Output data
-
Open
61
CE
I
H
GND
62
CLK
I
63
DI
I
-
64



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