PT6579
PIN DESCRIPTION
Pin Name
I/O
Active
Description
Pin No.
SG1 to SG50
O
-
Segment output pins
1 to 50
COM4/SG51
COM3 to COM1
Common driver output pins
The COM4/ SG51 pin can be used as a segment output in 1/3 duty
O
-
-
-
51 to 54
55
Power supply
Supply voltage in the range 4.5 to 6.0V
VDD
Used for the 2/3 Bias Voltage when the Bias Voltage is provided
externally.
Connect to VDD2 when 1/2 bias is used
VDD1
I
I
-
-
56
57
Used for the 1/3 Bias Voltage when the Bias Voltage is provided
externally.
VDD2
Connect to VDD1 when 1/2 Bias is used
VSS
CE
-
I
-
Ground
58
59
H
Chip enable pin
CLK
I
Synchronization clock pin
Transfer data input pin
PWM output pins
60
DI
I
-
61
P1 to P3
O
H
62 to 64
V1.1
5
September, 2009
PTC [ PRINCETON TECHNOLOGY CORP ]
