P82C55A

The P82C55A is a high-performance,CHMOS version of the industry standard P82C55A general purpose programmable I/O device which is designed for use with all intel and most other microprocessors.

Features of the P82C55A are:(1)compatible with all intel and most other microprocessors;(2)high speed,:zero wait state" operation with 8 MHz 8086/88 and 80186/188;(3)24 programmable I/O pins;(4)low power CHMOS;(5)completely TTL compatible;(6)control word read-back capability;(7)direct bit set/reset capability;(8)2.5mA DC drive capability on all I/O port outputs;(9)available in 40-pin DIP and 44-pin PLCC;(10)available in express.

The absolute maximum ratings of the P82C55A can be summarized as:(1):the parameter is ambient temperature under bias,the value is 0 to 70,the unit is ;(2):the parameter is storage temperature,the value is -65 to +150,the unit is ;(3):the parameter is supply voltage,the value is -0.5 to +8.0,the unit is V;(4):the parameter is operating voltage,the value is +4 to +7,the unit is V;(5):the parameter is voltage on any input,the value is GND-2 to +6.5,the unit is V;(6):the parameter is voltage on any output,the value is GND-0.5 to VCC+0.5,the unit is V;(7):the parameter is power dissipation,the value is 1,the unit is W.