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Details, datasheet, quote on part number:PT6955
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Datasheet text preview:
Princeton Technology Corp.
LED Driver IC DESCRIPTION
Tel : 886-2-29162151 Fax: 886-2-29174598 URL: http://www.princeton.com.tw
PT6955
PT6955 is an LED Controller driven on a 1/4 to 1/7 duty factor. Twelve/nine segment output lines, 4 to 7 grid output lines, one display memory, control circuit are all incorporated into a single chip to build a highly reliable peripheral device for a single chip microcomputer. Serial data is fed to PT6955 via a three-line serial interface. Housed in a 24-pin SO Package, PT6955's pin assignments and application circuit are optimized for easy PCB Layout and cost saving advantages.
FEATURES
· CMOS Technology · Low Power Consumption · 8-Step Dimming Circuitry · Serial Interface for Clock, Data Input, Strobe Pins · Available in 24-pin, SO Package
APPLICATION
· Micro-computer Peripheral Device
P T 6 9 5 5 v1.2
Page 1
Updated December 2001
Princeton Technology Corp.
LED Driver IC PIN CONFIGURATION
Tel : 886-2-29162151 Fax: 886-2-29174598 URL: http://www.princeton.com.tw
PT6955
OSC DIN CLK STB VDD SG1 SG2 SG3 SG4 SG5 SG6 SG7
GND GR1 GR2 GR3 GR4 GND VDD SG12/GR5 SG11/GR6 SG10/GR7 SG9 SG8
P T 6 9 5 5 v1.2
Page 2
Updated December 2001
Princeton Technology Corp.
LED Driver IC APPLICATION CIRCUIT
0.1µF
Tel : 886-2-29162151 Fax: 886-2-29174598 URL: http://www.princeton.com.tw
PT6955
G1 51K
MCU
+5V S1 S2 S3 S4 S5 S6 S7
OSC DIN CLK STB VDD SG1 SG2 SG3 SG4 SG5 SG6 SG7
GND GR1 GR2 GR3 GR4 GND VDD SG12/GR5 SG11/GR6 SG10/GR7 SG9 SG8
G1 G2 G3 G4 +5V S12 S11 S9 S8
G2 G3 G4 S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S12
DIGIT1 DIGIT2 DIGIT3 DIGIT4 SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 SEG7 SEG8 SEG9 SEG10 SEG11 SEG12
4-GR ID X 12-SEGMENT
Note: The capacitor (0.1uF) connected between the GND and VDD Pins must be located as near as possible to the PT6959 chip.
(C O M M ON CATHODE)
P T 6 9 5 5 v1.2
Page 3
Updated December 2001
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