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IS82C55A96
Product Overview
Category
IS82C55A96 belongs to the category of integrated circuits (ICs).
Use
This IC is commonly used for interfacing peripheral devices with microprocessors or microcontrollers.
Characteristics
- The IS82C55A96 is a versatile and programmable device.
- It provides three 8-bit bidirectional I/O ports.
- It has an additional 8-bit control port.
- The IC operates at a wide range of voltages, typically between 4.5V and 5.5V.
- It offers high-speed data transfer capabilities.
Package
The IS82C55A96 is available in a standard 40-pin DIP (Dual Inline Package) format.
Essence
The essence of IS82C55A96 lies in its ability to facilitate communication between a microprocessor and various peripheral devices.
Packaging/Quantity
The IC is typically sold in reels or tubes containing multiple units. The exact quantity may vary depending on the supplier.
Specifications
- Supply Voltage: 4.5V - 5.5V
- Operating Temperature Range: -40°C to +85°C
- Maximum Clock Frequency: 8 MHz
- Number of I/O Ports: 3
- Number of Control Lines: 8
- Package Type: 40-pin DIP
Detailed Pin Configuration
The IS82C55A96 features a total of 40 pins, each serving a specific purpose. Here is a detailed pin configuration:
- PA0 - Port A, Bit 0
- PA1 - Port A, Bit 1
- PA2 - Port A, Bit 2
- PA3 - Port A, Bit 3
- PA4 - Port A, Bit 4
- PA5 - Port A, Bit 5
- PA6 - Port A, Bit 6
- PA7 - Port A, Bit 7
- GND - Ground
- PB0 - Port B, Bit 0
- PB1 - Port B, Bit 1
- PB2 - Port B, Bit 2
- PB3 - Port B, Bit 3
- PB4 - Port B, Bit 4
- PB5 - Port B, Bit 5
- PB6 - Port B, Bit 6
- PB7 - Port B, Bit 7
- PC0 - Port C, Bit 0
- PC1 - Port C, Bit 1
- PC2 - Port C, Bit 2
- PC3 - Port C, Bit 3
- PC4 - Port C, Bit 4
- PC5 - Port C, Bit 5
- PC6 - Port C, Bit 6
- PC7 - Port C, Bit 7
- VCC - Supply Voltage
- RD - Read Control Line
- WR - Write Control Line
- CS - Chip Select Control Line
- A0 - Address Line 0
- A1 - Address Line 1
- A2 - Address Line 2
- RESET - Reset Control Line
- CLK - Clock Input
- INT - Interrupt Output
- HOLD - Hold Control Line
- HLDA - Hold Acknowledge Control Line
- READY - Ready Control Line
- NC - No Connection
- VCC - Supply Voltage
Functional Features
The IS82C55A96 offers the following functional features:
- Three 8-bit bidirectional I/O ports (Port A, Port B, and Port C)
- An 8-bit control port for various control signals
- Programmable mode selection for each I/O port
- Interrupt capability for efficient data transfer
- Handshake signals (HOLD and HLDA) for bus coordination
- Reset functionality for system initialization
Advantages and Disadvantages
Advantages
- Versatile and programmable nature allows for customization according to specific requirements.
- High-speed data transfer capabilities enhance overall system performance.
- Multiple I/O ports provide flexibility in interfacing with peripheral devices.
Disadvantages
- Limited number of I/O ports may restrict the simultaneous connection of multiple devices.
- Programming complexity may require additional expertise for proper utilization.
Working Principles
The IS82C55A96 operates by receiving commands from a microprocessor or microcontroller through the control port. These commands configure the I/O ports and control various operations. The IC communicates bidirectionally with peripheral devices connected to its I/O ports, enabling data transfer between the microprocessor and peripherals.
Detailed Application Field Plans
The IS82C55A96 finds applications in various fields where interfacing with
Καταγράψτε 10 συνήθεις ερωτήσεις και απαντήσεις που σχετίζονται με την εφαρμογή του IS82C55A96 σε τεχνικές λύσεις
Sure! Here are 10 common questions and answers related to the application of IS82C55A96 in technical solutions:
Q: What is IS82C55A96? A: IS82C55A96 is a programmable peripheral interface chip commonly used in technical solutions for interfacing microprocessors with external devices.
Q: What are the key features of IS82C55A96? A: The key features of IS82C55A96 include three 8-bit bidirectional I/O ports, mode selection capability, interrupt handling, and handshake signals.
Q: How can IS82C55A96 be used in technical solutions? A: IS82C55A96 can be used to connect microprocessors with various external devices such as keyboards, displays, sensors, and actuators.
Q: How many modes does IS82C55A96 support? A: IS82C55A96 supports three modes: Mode 0 (Basic Input/Output), Mode 1 (Strobed Input/Output), and Mode 2 (Bidirectional Bus).
Q: What is the purpose of interrupt handling in IS82C55A96? A: Interrupt handling in IS82C55A96 allows the chip to respond to external events or requests from devices without continuous polling by the microprocessor.
Q: Can IS82C55A96 handle multiple interrupts simultaneously? A: No, IS82C55A96 can handle only one interrupt at a time. It uses an interrupt priority scheme to determine which interrupt request to service first.
Q: How are the I/O ports configured in IS82C55A96? A: The I/O ports in IS82C55A96 can be configured as input or output ports based on the mode selected and the control word written to the chip.
Q: What are handshake signals in IS82C55A96? A: Handshake signals, such as RD (Read), WR (Write), and CS (Chip Select), are used for synchronization between the microprocessor and external devices connected to IS82C55A96.
Q: Can IS82C55A96 operate at different clock frequencies? A: Yes, IS82C55A96 can operate at different clock frequencies depending on the system requirements. It supports a wide range of clock frequencies.
Q: Is IS82C55A96 still widely used in modern technical solutions? A: While newer alternatives exist, IS82C55A96 is still used in certain legacy systems or specific applications where compatibility with older designs is required.
Please note that the answers provided here are general and may vary depending on the specific implementation and context of IS82C55A96 in a technical solution.