The MD82C88/B is a CMOS Bus Controller manufactured by Intersil Corporation. It is designed to generate control signals for interfacing memory and I/O devices with Intel's 8088 and 8086 microprocessors. This device provides timing and control signals necessary for memory and I/O read and write operations, as well as interrupt acknowledge cycles.

Applications:

• IBM PC and PC-XT compatible motherboards
• Industrial control systems based on 8088/8086 processors
• Embedded systems using 8088/8086 processors
• Legacy computer systems
• Data acquisition systems
• Instrumentation equipment
• Process control systems

Features:

• Generates control signals for 8088/8086 microprocessors
• Supports memory and I/O read/write operations
• Generates interrupt acknowledge signals
• CMOS technology for low power consumption
• TTL compatible inputs and outputs
• Programmable wait states
• Address latch enable (ALE) generation

Benefits:

• Simplified interface to memory and I/O devices
• Low power consumption
• Compatibility with industry-standard microprocessors
• Flexible timing control
• Reduced component count
• Reliable system operation
• Cost-effective solution

Additional Details:

The MD82C88/B generates essential control signals such as memory read (MRDC), memory write (MWTC), I/O read (IORC), and I/O write (IOWC) for interfacing with memory and peripheral devices. It also generates interrupt acknowledge (INTA) signals for handling interrupt requests. The CMOS technology ensures low power consumption, making it suitable for battery-powered and energy-efficient applications. The TTL compatible inputs and outputs allow for easy interfacing with other logic devices. The programmable wait states allow for adjusting the timing of memory and I/O operations to accommodate devices with different access times. The address latch enable (ALE) signal is used to latch the lower address bits from the multiplexed address/data bus. The MD82C88/B is typically packaged in a 20-pin DIP or SOIC package. The operating temperature range is typically 0°C to +70°C. The specific datasheet should always be consulted for the most accurate and up-to-date specifications. External components, such as resistors and capacitors, are required for proper operation. The device's timing characteristics are critical for ensuring proper system operation. Overall, the MD82C88/B provides a reliable and efficient solution for bus control in systems based on 8088/8086 microprocessors. This chip is responsible for managing the flow of data between the CPU, memory, and I/O devices.