Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw VFD Driver/Controller IC PT6324 DESCRIPTION PT6324 is a Vacuum Fluorescent Display (VFD) Controller driven on a 1/8 to 1/16 duty factor housed in 52-pin plastic QFP. 24 segment output lines, 16 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 micro computer. Serial data is fed to PT6324 via a three-line serial interface. FEATURES • • • • • • • • • CMOS technology Low power consumption Wide operating voltage VDD=2.7V~5.5V Key scanning (16 x 2 matrix) Display modes: (24 segments, 8 digits to 24 segments, 16 digits) 8-Step dimming circuitry Serial interface for Clock, Data Input, Data Output, Strobe pins No external resistors needed for driver outputs Available in 52-pin QFP APPLICATIONS • • • • • • • Microcomputer peripheral devices Digital Audio/Video system: CD/MD/VCD/DVD players Car audio VCR Electric scale meter P.O.S. Electronic equipment with instructional display PT6324 V1.2 -1- January, 2006 Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw VFD Driver/Controller IC PT6324 GR7 GR8 GR9 GR10 GR11 GR12 GR13 GR14 GR15 GR16 VEE VDD GND PIN CONFIGURATION 52 51 50 49 48 4 7 46 45 44 43 42 41 40 1 39 GR6 DIN 2 38 GR5 STB 3 37 GR4 DOUT 4 36 GR3 K1 5 35 GR2 K2 6 34 GR1 OSC 7 33 SG24 G ND 8 32 SG23 VDD 9 31 SG22 SG1/KS1 10 30 SG21 SG2/KS2 11 29 SG20 SG 3KS3 12 28 SG19 SG4/KS4 13 27 14 15 16 17 18 1 9 20 21 22 23 24 25 26 SG18 PT6324 V1.2 -2- SG16/KS16 SG15/KS15 SG14/KS14 SG13/KS13 SG12/KS12 SG11/KS11 SG10/KS10 SG9/KS9 SG8/KS8 SG7/KS7 SG6/KS6 SG5/KS5 PT6324 SG 17 CLK January, 2006 Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw VFD Driver/Controller IC PT6324 16-GRID X 24-SEGMENT VFD APPLICATION CIRCUIT VEE VDD 0.1µF 0.1µF 100pF MCU 0.1µF G7 G8 G10 G11 G12 G13 G14 G15 G16 16 Grid x 24 Segment VFD 1K G6 G1 SG24 SG17 KS16 KS1 1K 10KΩ 100pF 470Ω VDD 0.1µF Rosc 100K PT6324 100K 1N4148 x 16 10K 10K Z1 PT6324 V1.2 Z2 -3- January, 2006 Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw VFD Driver/Controller IC PT6324 Notes: 1. The value of Rosc is depend on PT6324 IC chip supply voltage of VDD (Rosc=82KΩ, when VDD=5V; Rosc=100KΩ, when VDD=3.3V). 2. Z1, Z2=Zener diode 5.1V 3. Please adding the current amplifying circuit as following figure when IOHGR>15mA on VFD panel for high brightness issue. P T 6 32 4 V F D P an e l SG 1 ~ SG 2 4 SG 1 ~ SG 2 4 2 4 Se g me n t GR01 ~ GR14 01G ~ 14G GR15 15G C . A . C ir c u it- 1 (* ) GR16 16G C . A . C ir c u it- 2 (* ) *=C.A. Circuit=Current amplifying circuit C.A. Circuit-1 & C.A. Circuit-2 Ex.: VDD GRn Q D VF D P anel GRID Parts recommended: • Q=SAMSUNG-KSR1105 (General fast switching transistor) • D=HITACHI-HSM221C (General fast recovery diode) PT6324 V1.2 -4- January, 2006 Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw VFD Driver/Controller IC PT6324 ORDER INFORMATION Order Part Number PT6324-Q PT6324-Q (L) Package Type 52 Pin QFP 52 Pin QFP Top Code PT6324-Q PT6324-Q Notes: 1. (L), (C) or (S) = Lead Free. 2. The Lead Free mark is put in front of the date code. PT6324 V1.2 -5- January, 2006