IS82C37A

Product Overview

• Category: Integrated Circuit
• Use: Programmable Interrupt Controller
• Characteristics:
  • High-performance and versatile IC
  • Designed for interrupt management in computer systems
  • Provides efficient handling of interrupts from various sources
• Package: 40-pin DIP (Dual Inline Package)
• Essence: Facilitates interrupt handling in computer systems
• Packaging/Quantity: Available in tubes or trays, quantity varies based on supplier

Specifications

• Supply Voltage: 5V ±10%
• Operating Temperature: 0°C to 70°C
• Maximum Clock Frequency: 8 MHz
• Number of Interrupt Inputs: 16
• Number of Interrupt Outputs: 8
• Interrupt Priority Levels: 7
• Compatible with Intel 8259A

Detailed Pin Configuration

The IS82C37A has a total of 40 pins. Here is the detailed pin configuration:

1. INTA - Interrupt Acknowledge Output
2. INTB - Interrupt Acknowledge Output
3. INTC - Interrupt Acknowledge Output
4. INTD - Interrupt Acknowledge Output
5. A0 - Address Input
6. A1 - Address Input
7. A2 - Address Input
8. A3 - Address Input
9. A4 - Address Input
10. A5 - Address Input
11. A6 - Address Input
12. A7 - Address Input
13. A8 - Address Input
14. A9 - Address Input
15. A10 - Address Input
16. A11 - Address Input
17. A12 - Address Input
18. A13 - Address Input
19. A14 - Address Input
20. A15 - Address Input
21. RD - Read Control Input
22. WR - Write Control Input
23. CS - Chip Select Input
24. SP/EN - Slave Priority Enable Input
25. INT - Interrupt Request Output
26. D0 - Data Bus Bit 0
27. D1 - Data Bus Bit 1
28. D2 - Data Bus Bit 2
29. D3 - Data Bus Bit 3
30. D4 - Data Bus Bit 4
31. D5 - Data Bus Bit 5
32. D6 - Data Bus Bit 6
33. D7 - Data Bus Bit 7
34. CAS2 - Cascade Input 2
35. CAS3 - Cascade Input 3
36. CAS4 - Cascade Input 4
37. CAS5 - Cascade Input 5
38. GND - Ground
39. VCC - Power Supply
40. RESET - Reset Input

Functional Features

• Efficient interrupt handling: The IS82C37A efficiently manages interrupts from various sources, allowing for smooth operation of computer systems.
• Programmable interrupt levels: It supports up to 7 priority levels, enabling flexible interrupt management based on the system requirements.
• Cascading capability: The IC can be cascaded with other interrupt controllers, expanding the number of interrupt inputs and outputs.

Advantages and Disadvantages

Advantages: - Versatile and high-performance IC - Supports multiple interrupt sources - Programmable interrupt levels provide flexibility - Cascading capability allows for expansion

Disadvantages: - Limited number of interrupt inputs and outputs - Requires external components for complete functionality

Working Principles

The IS82C37A operates by receiving interrupt requests from various sources and prioritizing them based on the programmed interrupt levels. When an interrupt request is received, the IC generates an interrupt acknowledge signal and provides the appropriate interrupt vector to the CPU. The interrupt controller also handles interrupt masking and cascading when multiple controllers are used.

Detailed Application Field Plans

The IS82C37A is widely used in computer systems where efficient interrupt handling is crucial. Some of the common application fields include: - Personal computers - Embedded systems - Industrial automation - Communication equipment - Medical devices

Detailed and Complete Alternative Models

• Intel 8259A: The predecessor of IS82C37A, offering similar functionality.
• NEC D8259: Another compatible programmable interrupt controller with comparable features.
• Motorola MC68230: A versatile interrupt controller suitable for various applications.

These alternative models provide similar interrupt management capabilities and can be considered as alternatives to the IS82C37A based on specific system requirements.

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