MSM82C53-2JS

E2O0018-27-X2 ¡ Semiconductor¡ Semiconductor MThSiMs v8e2rCsi5o3n-:2JRaSn/. G19S9/8JS Previous version: Aug. 1996 MSM82C53-2RS/GS/JS CMOS PROGRAMMABLE INTERVAL TIMER GENERAL DESCRIPTION The MSM82C53-2RS/GS/JS is programmable universal timers designed for use in microcomputer systems. Based on silicon gate CMOS technology, it requires a standby current of only 100 mA (max.) when the chip is in the nonselected state. During timer operation, power consumption is still very low only 8 mA (max.) at 8 MHz of current required. The device consists of three independent counters, and can count up to a maximum of 8 MHz (MSM82C53-2). The timer features six different counter modes, and binary count/BCD count functions. Count values can be set in byte or word units, and all functions are freely programmable. FEATURES Maximum operating frequency of 8 MHz (MSM82C53-2) High speed and low power consumption achieved through silicon gate CMOS technology Completely static operation Three independent 16-bit down-counters 3 V to 6 V single power supply Six counter modes available for each counter Binary and decimal counting possible 24-pin Plastic DIP (DIP24-P-600-2.54): (Product name: MSM82C53-2RS) 28-pin Plastic QFJ (QFJ28-P-S450-1.27): (Product name: MSM82C53-2JS) 32-pin Plastic SSOP(SSOP32-P-430-1.00-K): (Product name: MSM82C53-2GS-K) 1/19 ¡ Semiconductor FUNCTIONAL BLOCK DIAGRAM VCC GND 8 Data D7 - D0 Bus Buffer WR RD Read/ Write A0 Logic A1 CS 8 Control Wor...