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Product Detailed Parameters
- Description：ASYNCH COMMS INTERFACE ADAPTER
- Series：*
- Mfr：Renesas Electronics Corporation
- Package：Bulk
- Features：-
- Number of Channels：-
- FIFO's：-
- Protocol：-
- Data Rate (Max)：-
- Voltage - Supply：-
- With Auto Flow Control：-
- With IrDA Encoder/Decoder：-
- With False Start Bit Detection：-
- With Modem Control：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
- Grade：-
- Qualification：-
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Overview
The HD63450RCP8 is a Direct Memory Access (DMA) controller manufactured by Renesas Electronics Corporation, formerly Hitachi. It operates with a maximum clock frequency of 8 MHz and utilizes CMOS technology. The device features four independent DMA channels and supports a 24-bit address bus width alongside a 16-bit external data bus. It is housed in a 64-pin Plastic Dual In-line Package (PDIP). The component is compatible with the Motorola 68000 bus architecture and functions at a standard supply voltage of 5 V.
Feature Summary
- Supports cycle steal with or without hold, burst, and auto request transfer modes
- Provides fixed and rotational priority interrupt modes
- Compatible with the 68000 bus architecture
Applications
- Data transfer operations within 68000-based system architectures
- Peripheral-to-memory or memory-to-peripheral data movement
- High-speed I/O interface buffering
Procurement Notes
Verify the specific suffix 'RCP8' against official Renesas documentation to confirm package type and temperature range. Confirm RoHS compliance status as historical Hitachi components may vary. Check for obsolescence or last-time-buy notices before finalizing procurement plans.
Selection Notes
Select this component when interfacing with 68000-family processors requiring dedicated hardware DMA capabilities. Ensure the design accommodates the 64-pin DIP footprint and 5V logic levels. Verify that the 8 MHz operational speed meets the system timing requirements for the intended data throughput.
Part Context
This part belongs to the HD63450 series of DMA controllers originally developed by Hitachi Semiconductor, now part of Renesas Electronics. These devices were designed to offload CPU-intensive data transfer tasks in legacy microcomputer systems based on the Motorola 68000 architecture.
Replacement Considerations
Consult official Renesas cross-reference guides for verified substitutes. Generic equivalents may lack compatibility with the specific control register set or timing characteristics required by the original 68000-based design.
