WS82C55A-5C

CMOS Programmable peripheral Interface Features Pin Compatible with NMOS 8255A 24 Programmable I/O Pins Fully TTL Compatible High Speed, No “Wait State” Operation with 5MHz 80C86 and 8MHz 80C88 Direct Bit Set/Reset Capability Enhanced Control Word Read Capability L7 Process 2.5mA Drive Capability on All I/O Ports Low Standby Power (ICCSB) . . . . . . . . . . . . . . . . .10µA WS82C55A Description The WS82C55A is a high performance CMOS version of the industry standard 8255A and is manufactured using a self-aligned silicon gate CMOS process (Scaled SAJI IV). It is a general purpose programmable I/O device which may be used with many different microprocessors. There are 24 I/O pins which may be individually programmed in 2 groups of 12 and used in 3 major modes of operation. The high performance and industry standard configuration of the WS82C55A make it compatible with the 80C86, and other microprocessors. Static CMOS circuit design insures low operating power. TTL compatibility over the full military temperature range and bus hold circuitry eliminate the need for pull-up resistors. The advanced SAJI process results in performance equal to or greater than existing functionally equivalent products at a fraction of the power. SPEED Ordering Information PART NUMBERS SPEED PART NUMBERS TEMPERATURE RANGE o PKG. 40DIP 44 PLCC 44 QFP WS82C55A-5P 5MHz WS82C55AP 8MHz 8MHz 0 C to 70 C o o WS82C55A-5C WS82C55A-5Q 5MHz 5MHz WS82C55AC WS82C55AQ 0 C to 70 C ...