CS82C55A-5Z

Product Overview

Category

The CS82C55A-5Z belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used in various electronic devices for controlling and interfacing with peripheral devices.

Characteristics

• The CS82C55A-5Z is a versatile programmable peripheral interface (PPI) chip.
• It provides three 8-bit parallel ports, which can be configured as input or output ports.
• The chip supports various modes of operation, including mode 0, mode 1, and mode 2.
• It operates on a single +5V power supply.
• The CS82C55A-5Z is designed to be compatible with industry-standard 8255 PPI chips.

Package

The CS82C55A-5Z is available in a 40-pin DIP (Dual Inline Package) format.

Essence

The essence of the CS82C55A-5Z lies in its ability to facilitate communication between a microprocessor and external devices through its versatile I/O ports.

Packaging/Quantity

The CS82C55A-5Z is typically packaged individually and is available in quantities suitable for both prototyping and production purposes.

Specifications

• Supply Voltage: +5V
• Operating Temperature Range: -40°C to +85°C
• Input/Output Voltage Levels: TTL compatible
• Maximum Operating Frequency: 10 MHz
• Number of I/O Ports: 3 (configurable)
• Data Bus Width: 8 bits
• Control Signals: RD, WR, A0, A1, CS

Detailed Pin Configuration

The CS82C55A-5Z features a total of 40 pins. Here is a detailed pin configuration:

1. PA0 (Port A Bit 0)
2. PA1 (Port A Bit 1)
3. PA2 (Port A Bit 2)
4. PA3 (Port A Bit 3)
5. PA4 (Port A Bit 4)
6. PA5 (Port A Bit 5)
7. PA6 (Port A Bit 6)
8. PA7 (Port A Bit 7)
9. GND (Ground)
10. PB0 (Port B Bit 0)
11. PB1 (Port B Bit 1)
12. PB2 (Port B Bit 2)
13. PB3 (Port B Bit 3)
14. PB4 (Port B Bit 4)
15. PB5 (Port B Bit 5)
16. PB6 (Port B Bit 6)
17. PB7 (Port B Bit 7)
18. VCC (+5V Power Supply)
19. PC0 (Port C Bit 0)
20. PC1 (Port C Bit 1)
21. PC2 (Port C Bit 2)
22. PC3 (Port C Bit 3)
23. PC4 (Port C Bit 4)
24. PC5 (Port C Bit 5)
25. PC6 (Port C Bit 6)
26. PC7 (Port C Bit 7)
27. RD (Read Control)
28. WR (Write Control)
29. A0 (Address Bit 0)
30. A1 (Address Bit 1)
31. CS (Chip Select)
32. RESET (Reset Input)
33. CLK (Clock Input)
34. GND (Ground)
35. INTA (Interrupt Acknowledge)
36. INTR (Interrupt Request)
37. IOR (Input/Output Register Select)
38. IOW (Input/Output Write)
39. READY (Ready Output)
40. VCC (+5V Power Supply)

Functional Features

The CS82C55A-5Z offers the following functional features:

1. Programmable I/O Ports: The three 8-bit parallel ports can be configured as input or output ports based on the application requirements.
2. Mode Selection: The chip supports three modes of operation (mode 0, mode 1, and mode 2), providing flexibility in data transfer and control.
3. Interrupt Capability: The CS82C55A-5Z includes interrupt request and acknowledge signals, allowing for efficient handling of external events.
4. Read/Write Control: The RD and WR signals enable the microprocessor to read from or write to the chip's registers.
5. Ready Output: The READY signal indicates the availability of data for the microprocessor, ensuring synchronized communication.

Advantages and Disadvantages

Advantages

• Versatile and flexible I/O configuration options.
• Compatibility with industry-standard 8255 PPI chips.
• Support for multiple operating modes.
• Interrupt capability for efficient event handling.

Disadvantages

• Limited number of I/O ports compared to some other PPI chips.
• Relatively