HD63450RPS10

Overview

The HD63450RPS10 is a CMOS Direct Memory Access controller manufactured by Renesas Electronics, formerly Hitachi. It features four independent DMA channels and supports a maximum clock frequency of 10 MHz. The device utilizes a 24-bit address bus and a 16-bit external data bus, ensuring compatibility with the Motorola 68000 family bus architecture. It is housed in a 64-pin Plastic Dual In-line Package (PDIP). The component operates on a single 5 V power supply and functions within a commercial temperature range of 0 °C to 70 °C.

Feature Summary

• Supports cycle steal with or without hold, burst, and auto request transfer modes for flexible data movement.
• Provides fixed and rotational priority interrupt modes to manage channel arbitration effectively.
• Ensures direct bus compatibility with the Motorola 68000 family system architecture.

Applications

• Data acquisition systems requiring high-speed memory-to-peripheral transfers.
• Industrial control applications utilizing 68000-based processor architectures.
• Communication equipment needing efficient block data handling without CPU intervention.

Procurement Notes

Verify the specific suffix 'RPS10' against official Renesas documentation to confirm pinout and electrical specifications match the standard HD63450 variant. Confirm RoHS compliance status as historical Hitachi parts may vary. Ensure the supplier provides genuine components with traceable manufacturing dates to avoid counterfeit risks associated with legacy semiconductor devices.

Selection Notes

Select this component when interfacing with legacy 68000-based systems requiring dedicated hardware DMA capabilities. Consider the 10 MHz speed limit and 64-pin DIP package constraints during PCB layout. Evaluate if the four-channel capacity meets system throughput requirements before choosing over simpler I/O port solutions.

Part Context

This part belongs to the HD63450 series of DMA controllers originally developed by Hitachi and later integrated into Renesas Electronics' portfolio. The series is designed to offload data transfer tasks from the central processing unit in microcomputer systems based on the 68000 architecture, allowing for more efficient system resource utilization.

Replacement Considerations

Consult official Renesas cross-reference guides for verified substitutes. Generic DMA controllers may lack the specific 68000 bus timing compatibility required for seamless integration into existing legacy designs without significant circuit modifications.