PT6955_10 Datasheet, PDF (4/19 Pages) Princeton Technology Corp – LED Driver IC

LED Driver IC
PIN CONFIGURATION
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URL: http://www.princeton.com.tw
PT6955
PIN DESCRIPTION
Pin Name
I/O
Description
Pin No.
Oscillator Input Pin
OSC
I A resistor is connected to this pin to determine
1
the oscillation frequency
Data Input Pin
DIN
I This pin inputs serial data at the rising edge of the
2
shift clock (starting from the lower bit)
CLK
I
Clock Input Pin
This pin reads serial data at the rising edge.
3
STB
VDD
Serial Interface Strobe Pin
I The data input after the STB has fallen is processed
4
as a command. When this pin is "HIGH", CLK is ignored.
- Power Supply
5, 18
SG1 ~ SG9
O
Segment Output Pins
(p-channel, open drain)
6 ~ 14
SG10/GR7 ~ SG12/GR5
O
Segment Output Pin/Grid Output Pin
(CMOS Output)
15 ~ 17
GND
- Ground Pin
19, 24
GR4 ~ GR1
O Grid Output Pins (n-channel, open drain)
20 ~ 23
PT6955 V1.5
-4-
June, 2005