CD82C55A overview
CD82C55A is a component documented by Harris Corporation. The PDF description identifies it as "CMOS Programmable Peripheral Interface." This guide condenses the most useful engineering information from the available PDF so that designers and sourcing teams can identify the checks that still need confirmation in the original document.
Datasheet snapshot
- Manufacturer: Harris Corporation
- Part number: CD82C55A
- Category: Logic IC
- Datasheet length: 26 Pages
Key features noted in the PDF
- Pin Compatible with NMOS 8255A
- 24 Programmable I/O Pins
- Fully TTL Compatible
- High Speed, No “Wait State” Operation with 5MHz and 8MHz 80C86 and 80C88
- Direct Bit Set/Reset Capability
- Enhanced Control Word Read Capability
- L7 Process
Specifications and operating details
The following points were extracted from the PDF text. Check the associated conditions, notes and limits in the complete document before using a value in a design.
- A 0.1µF capacitor between pins 26 and 7 is recommended for decoupling.
- GROUP A PORT A (8) GROUP A PORT C UPPER (4) GROUP B PORT C LOWER (4) GROUP B PORT B (8) GROUP B CONTROL GROUP A CONTROL DATA BUS BUFFER READ WRITE CONTROL LOGIC RD WR RESET CS D7-D0 POWER SUPPLIES +5V GND BI-DIRECTIONAL DATA BUS I/O PA7-PA.
- Ports A, B, C IBHL Bus Hold Low Current 50 400 µA VO = 1.0V.
- Port A ONLY IDAR Darlington Drive Current -2.5 Note 2, 4 mA Ports A, B, C.
- Test Condition 3 ICCSB Standby Power Supply Current - 10 µAV CC = 5.5V, VIN = VCC or GND.
- Output Open ICCOP Operating Power Supply Current - 1 mA/MHz T A = +25oC, VCC = 5.0V, Typical (See Note 3) NOTES: 2.
- ICCOP = 1mA/MHz of Peripheral Read/Write cycle time. (Example: 1.0µs I/O Read/Write cycle time = 1mA).
Topics covered by the datasheet
The document includes sections related to:
- Features
- Description
- Ordering Information
Engineering review checklist
- Check resistance value, tolerance, temperature coefficient and long-term stability over the operating range.
- Derate continuous power for ambient temperature and verify pulse or surge capability separately.
- Match the land pattern, termination finish and current-sense routing to the exact package option.
Always confirm values against the latest manufacturer-controlled datasheet, especially when qualifying a substitute or releasing a production BOM.
View the complete PDF and model record
Open the CD82C55A datasheet and model details to review the complete PDF, document pages and available product information.
Source attribution
Adapted from the PDF associated with this DigiCamel model page.
Source model URL: https://www.digicamel.com/product.php?slug=cd82c55a-harris-corporation