Datasheet Details
- Part number
- 82C55
- Manufacturer
- Intel Corporation
- File Size
- 325.10 KB
- Datasheet
- 82C55_IntelCorporation.pdf
- Description
- CHMOS PROGRAMMABLE PERIPHERAL INTERFACE
82C55 Description
82C55A CHMOS PROGRAMMABLE PERIPHERAL INTERFACE Y Compatible with all Intel and Most Other Microprocessors High Speed ‘‘Zero Wait State’’ Operation wi.
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.
82C55 Features
* 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
82C55 Applications
* 231256
* 5
Figure 5 Basic Mode Definitions and Bus Interface
When Port C is being used as status control for Port A or B these bits can be set or reset by using the Bit Set Reset operation just as if they were data output ports 5
82C55A
Interrupt Control Functions When the 82C55A is progr
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