82C55 Datasheet

The 82C55 is a CMOS Programmable peripheral Interface.

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Part Number82C55
ManufacturerWing Shing Computer Components
Overview 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.
* 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 Pow.
Part Number82C55
DescriptionVOLTAGE DETECTORS
ManufacturerUnisonic Technologies
Overview The UTC 82CXX series are good performance 3-terminals voltage detectors and manufactured by CMOS technologies with highly accurate, low power consumption. The detection voltage is extremely accurate . 1 *High-accuracy detection voltage : ±2% *Detect voltage range : 0.9V to 6.2V in 0.1V increments *Detect voltage temperature characteristics: TYP. ±100ppm/°С. *Wide operating voltage range : 0.7V to 10.0V *Low current consumption : TYP 0.7μA(at VIN=1.5V) TO-92
* ORDERING INFORMATION 1 G O I I Pi.
Part Number82C55
DescriptionCMOS PROGRAMMABLE PERIPHERAL INTERFACE
ManufacturerToshiba
Overview . .
Part Number82C55
DescriptionCHMOS PROGRAMMABLE PERIPHERAL INTERFACE
ManufacturerIntel Corporation
Overview Symbol PA3–0 RD CS Pin Number Dip PLCC 1– 4 5 6 2–5 6 7 Type I O I I Name and Function PORT A PINS 0 – 3 Lower nibble of an 8-bit data output latch buffer and an 8-bit data input latch READ CONTROL Th. or ‘‘personality’’ to further enhance the power and flexibility of the 82C55A Port A One 8-bit data output latch buffer and one 8-bit input latch buffer Both ‘‘pull-up’’ and ‘‘pulldown’’ bus hold devices are present on Port A Port B One 8-bit data input output latch buffer Only ‘‘pull-up’’ bus hold .

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