IMQ82C55AZ

Product Overview

• Category: Integrated Circuit
• Use: General Purpose Programmable Peripheral Interface
• Characteristics: Versatile, programmable, high-speed, compatible with various microprocessors
• Package: 40-pin DIP (Dual Inline Package)
• Essence: Provides a flexible interface between a microprocessor and external devices
• Packaging/Quantity: Available in reels of 1000 units

Specifications

• Supply Voltage: 5V ±10%
• Operating Temperature: -40°C to +85°C
• Input/Output Voltage: TTL compatible
• Maximum Clock Frequency: 8 MHz
• Number of I/O Ports: 24
• Modes of Operation: Three modes: Mode 0, Mode 1, and Mode 2
• Interrupt Capability: Yes, with four interrupt inputs
• Timers/Counters: Two 16-bit timers/counters

Detailed Pin Configuration

The IMQ82C55AZ has a total of 40 pins. The pin configuration is as follows:

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. PC0 (Port C, Bit 0)
19. PC1 (Port C, Bit 1)
20. PC2 (Port C, Bit 2)
21. PC3 (Port C, Bit 3)
22. PC4 (Port C, Bit 4)
23. PC5 (Port C, Bit 5)
24. PC6 (Port C, Bit 6)
25. PC7 (Port C, Bit 7)
26. VCC (+5V Power Supply)
27. RD (Read Control)
28. WR (Write Control)
29. CS (Chip Select)
30. A0 (Address Bit 0)
31. A1 (Address Bit 1)
32. A2 (Address Bit 2)
33. RESET (Reset Input)
34. INTA (Interrupt Acknowledge)
35. INTB (Interrupt Request B)
36. INTC (Interrupt Request C)
37. INTD (Interrupt Request D)
38. CLK (Clock Input)
39. GND (Ground)
40. VCC (+5V Power Supply)

Functional Features

• Provides three modes of operation for versatile interfacing options
• Supports interrupt capability with four interrupt inputs
• Two 16-bit timers/counters for timing and counting applications
• TTL compatible input/output voltage levels for easy integration with various microprocessors
• High-speed operation with a maximum clock frequency of 8 MHz

Advantages and Disadvantages

Advantages: - Versatile and programmable interface solution - Compatible with a wide range of microprocessors - Supports interrupt capability for efficient event handling - High-speed operation for time-sensitive applications

Disadvantages: - Limited number of I/O ports (24) - Requires external components for complete functionality - Relatively large package size (40-pin DIP)

Working Principles

The IMQ82C55AZ acts as a programmable peripheral interface between a microprocessor and external devices. It provides three modes of operation, allowing the microprocessor to read from or write to the connected devices. The chip supports interrupt capability, enabling efficient event handling by the microprocessor. It also features two 16-bit timers/counters for timing and counting applications.

Detailed Application Field Plans

The IMQ82C55AZ can be used in various applications, including but not limited to: - Industrial automation systems - Robotics - Data acquisition systems - Instrumentation devices - Communication equipment - Embedded systems

Alternative Models

Some alternative models that offer similar functionality to the IMQ82C55AZ are: - Intel 8255A - Motorola MC6821 - Zilog Z80PIO - Texas Instruments SN74LS244

These alternatives provide comparable programmable peripheral interface capabilities and can be