PT6955

www.DataSheet4U.com 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 PT6955 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 PT6955 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 S...