The Intel D82284-6 is a Clock Generator and Ready Interface designed for use with the Intel 8086 and 8088 microprocessors. It provides the necessary clock signals and ready synchronization for these CPUs, as well as reset signal generation. The '-6' likely indicates a specific speed grade or revision.
Applications:
- 8086/8088-Based Systems: Essential for the proper operation of systems built around the Intel 8086 and 8088 microprocessors.
- IBM PC and XT Compatibles: Found in the original IBM PC and PC XT and their clones.
- Industrial Control Systems: Used in industrial control equipment based on the 8086/8088 architecture.
- Early Embedded Systems: Employed in various embedded systems from the early 1980s.
Features:
- Clock Generation: Generates the CLK signal required by the 8086/8088 CPUs.
- Ready Synchronization: Synchronizes the READY signal from memory and peripherals to the CPU.
- Reset Generation: Generates the RESET signal for system initialization.
- Crystal Oscillator: Uses an external crystal oscillator to generate the clock frequency.
- TTL Compatible: Compatible with standard TTL logic levels.
- Single 5V Power Supply: Operates from a single 5V power supply.
Benefits:
- Ensures Proper CPU Operation: Provides the necessary clock and synchronization signals for reliable CPU operation.
- Simplified System Design: Integrates clock generation and ready interface functions into a single chip, simplifying system design.
- Reliable Reset: Generates a reliable reset signal for system initialization.
Additional Details:
The D82284-6 is housed in a 18-pin DIP package. It uses an external crystal oscillator to generate the base clock frequency, which is then divided down to produce the CLK signal for the CPU. The READY signal is used to synchronize memory and peripheral accesses with the CPU, ensuring that the CPU does not attempt to read data before it is available. The RESET signal is used to initialize the CPU and other system components at power-up or after a system error. Without this component, the 8086/8088 microprocessors would not function correctly.