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| Princeton Technology Corp. LED Driver IC DESCRIPTION Tel : 886-2-29162151 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT6958 PT6958 is an LED Controller driven on a 1/6 duty factor. Ten segment output lines, 5 grid output lines, one display memory, control circuit, key scan 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 PT6958 via a three-line serial interface. Housed in a 28-pin SO Package, PT6958's pin assignments and application circuit are optimized for easy PCB Layout and cost saving advantages. FEATURES * CMOS Technology * Low Power Consumption * Key Scanning (6 x 4 matrix) * 8-Step Dimming Circuitry * Serial Interface for Clock, Data Input, Data Output, Strobe Pins * Available in 28-pin, SO Package APPLICATION * Micro-computer Peripheral Device PT6958 v1.0 1 Updated Oct. 2000 Princeton Technology Corp. LED Driver IC PIN CONFIGURATION OSC DOUT D IN C LK STB K1 K2 K3 K4 VDD S G 1 /K S1 S G 2 /K S2 S G 3 /K S3 S G 4 /K S4 Tel : 886-2-29162151 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT6958 GND GR1 GR2 GR3 GR4 GR5 GND VDD SG 10 SG 9 SG 8 SG 7 S G 6 /K S6 S G 5 /K S5 PT6958 v1.0 2 Updated Oct. 2000 Princeton Technology Corp. LED Driver IC Tel : 886-2-29162151 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT6958 APPLICATION CIRCUIT G1 5 1K M CU 10K + 5V + 5V S1 S2 S3 S4 O SC DOUT D IN C LK STB K1 K2 K3 K4 VDD S G 1/K S 1 S G 2/K S 2 S G 3/K S 3 S G 4/K S 4 GND GR1 GR2 GR3 GR4 GR5 GND VDD S G 10 SG9 SG8 SG7 S G 6/K S 6 S G 5/K S 5 G1 G2 G3 G4 + 5V S 10 S9 S8 S7 S6 S5 G2 G3 G4 S1 S2 S3 S4 S5 S6 S7 S8 S9 S 10 D IG IT 1 D IG IT 2 D IG IT 3 D IG IT 4 SEG 1 SEG 2 SEG 3 SEG 4 SEG 5 SEG 6 SEG 7 SEG 8 SEG 9 S E G 10 4-G R ID X 10-S E G M E N T L ED (C O M M O N C ATH O D E ) S1 S2 SW 5 SW 6 SW 7 SW 8 1N 4148 SW 1 SW 2 SW 3 SW 4 PT6958 v1.0 3 Updated Oct. 2000 |
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