PS035

35-BIT LED DISPLAY DRIVER ■ FEATURES — — — — — — — — CMOS technology Continuous brightness control Serial data input No LOAD signal required Optional external data enable and reset Wide power supply operation (3.5V to 10V) 34 or 35 outputs, 20mA sink capability Alphanumeric capability Part No: 80-08-00004 Type: PS035 ■ APPLICATIONS — Products with alphanumeric LED displays such as digital clock, counter, radio, multimeter, etc. — Industrial control indicator or instrumentation readout — Relay driver ■ GENERAL DESCRIPTIONS The PS035 is designed to drive either 4 or 5-digit, common anode alphanumeric LED displays with the added benefit of requiring minimal interface with the display or data source. Data is transferred serially via 2 signals: clock and serial data. Data transfer without the added inconvenience of external LOAD and RESET signal is accomplished by using a format of a leading "1" followed by the allowed 35 data bits. Display brightness is determined by control of the output current for LED displays. Typically, the output current is 36 times greater that current flowing into the B.C. terminal. ■ DIE SIZE AND PAD ASSIGNMENT OUT5 OUT4 OUT3 OUT2 OUT1 RESET B.C. VDD OUT6 VSS OUT7 OUT8 OUT9 OUT10 OUT12 OUT11 OUT13 OUT14 OUT15 OUT16 OUT17 VSS OUT18 OUT19 OUT20 OUT21 OUT22 OUT23 OUT31 VSS OUT28 OUT26 OUT24 OUT32 OUT30 OUT29 OUT27 OUT25 PAD NAME Sup Sys To Bri Clo Ser To Con ply tem res ght ck ial ena sta e n i b n volt grou t al essnput data le o t si l DESCRIPTION age nd the contr to t inpu r dis nking t able serial data current output input internal registers ol current input ransfer serial data 2650um DATA CLK IN ENB OUT35 OUT34 OUT33 VDD VSS RESE B.C CLK DATA ENB OUT . n T IN 2740um OPTO TECH Since 1983 Microelectronics Business Division 2003.03 1/1 OPTO TECH CORPORATION Tel: 886-3-5638951 Fax: 886-3-5783696 http://www.opto.com.tw