PT6958 Datasheet, PDF (2/3 Pages) Princeton Technology Corp – LED Driver IC

Princeton Technology Corp.
LED Driver IC
Tel : [phone]
Fax: [phone]
URL: http://www.princeton.com.tw
PT6958
PIN CONFIGURATION
PIN DESCRIPTION
OSC
DOUT
DIN
CLK
STB
K1
K2
K3
K4
VDD
SG1/KS1
SG2/KS2
SG3/KS3
SG4/KS4
GND
GR1
GR2
GR3
GR4
GR5
GND
VDD
SG10
SG9
SG8
SG7
SG6/KS6
SG5/KS5
Pin Name
I/O
Description
Pin No.
OSC
DOUT
DIN
CLK
STB
K1 to K4
GND
SG1/KS1 to SG6/KS6
SG7 to SG10
VDD
GR5 to GR1
PT6958 v1.1
Oscillator Input Pin
I A resistor is connected to this pin to determine
1
the oscillation frequency
Data Output Pin (N-Channel, Open-Drain)
O This pin outputs serial data at the falling edge
2
of the shift clock.
Data Input Pin
I This pin inputs serial data at the rising edge of
3
the shift clock (starting from the lower bit)
Clock Input Pin
I
This pin reads serial data at the rising edge
4
and outputs data at the falling edge.
Serial Interface Strobe Pin
I
The data input after the STB has fallen is
processed as a command.
5
When this pin is "HIGH", CLK is ignored.
Key Data Input Pins
I
The data sent to these pins are latched at the
end of the display cycle.
(Internal Pull-Low Resistor)
6~9
-
Ground Pin
22,28
O
Segment Output Pins (p-channel, open drain)
Also acts as the Key Source
11~16
O Segment Output Pins (p-channel, open drain) 17~20
-
Power Supply
10,21
O
Grid Output Pins (n-channel, open drain)
23~27
2
Updated Nov. 2000