Key facts
- Brand
- Intersil
- Model
- 82C55A
- Industry
- Industrial
- Documents
- 4
- Languages
- EN
- Last added
- 2012-05-04
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Intersil 82C55A Datasheet
The Intersil 82C55A is a high‑performance CMOS version of the industry‑standard 8255A programmable peripheral interface. It offers 24 programmable I/O pins, TTL compatibility, low power consumption and a range of package options such as PDIP, PLCC and MQFP.
The datasheet details pin descriptions, functional block diagrams, operating modes (Basic I/O, Strobed I/O, Bidirectional Bus), timing diagrams, and mechanical dimensions for each package. It also includes ordering information, electrical characteristics, and handling cautions.
Intersil 82C55A specifications
| Operating temperature range | -55 °C to 125 °C |
|---|---|
| Supply voltage | +5 V |
| I/O drive capability | 2.5 mA per port |
| Low standby power | 10 µA |
Source: Intersil 82C55A Datasheet
All Intersil 82C55A documents by type
Ratings, dimensions and ordering codes, for selection and design work.
How to use the product for one specific task, with worked examples.
Questions answered in these manuals
Is the 82C55A pin compatible with the NMOS 8255A?
Yes, the 82C55A is pin compatible with the NMOS 8255A.
What happens when the RESET pin is driven high?
A high on RESET initializes the control register to 9Bh and sets all ports (A, B, C) to input mode.
How many programmable I/O pins does the 82C55A have?
The 82C55A provides 24 programmable I/O pins.
What is the standby power consumption of the 82C55A?
The standby power (ICCSB) is 0.10 µA.
What happens to the address lines when a READ or WRITE signal falls on the 51864 mask version?
A falling edge on the READ or WRITE signal disables further changes on the address lines (AO and A1) during the operation.
From: Intersil 82C55A Address to Read/Write Set Up Time Technical Brief
What part is the 82C55A pin compatible with?
The 82C55A is pin compatible with the NMOS 82554.