IDT79R3041-33J

Microprocessors Overview

The IDT79R3041-33J is a 32-bit RISC microprocessor operating at 33 MHz with a 5V supply. It features a 2KB instruction cache and a 512B data cache, both direct-mapped. The device includes an on-chip multiply/divide unit, a 4-deep write buffer, and a 4-deep read buffer. It utilizes an 84-pin PLCC cavity-down package and supports 8-, 16-, and 32-bit programmable bus interfaces.

Microprocessors Feature Summary

• Integrates a MIPS-compatible 32-bit RISC CPU core with a five-stage pipeline for high execution efficiency.
• Includes on-chip caches and a dedicated integer multiply/divide unit to minimize external memory dependencies.
• Features a flexible bus interface supporting variable port widths and programmable timing configurations.
• Incorporates internal buffers and a DMA arbiter to decouple processor speed from memory access rates.

Microprocessors Applications

• Laser printer systems requiring Page Description Language interpretation
• Low-cost embedded processing applications
• Systems utilizing mixed-width memory architectures (8/16/32-bit)

Microprocessors Procurement Notes

Verify the specific suffix 'J' corresponds to the 84-pin PLCC cavity-down package configuration. Confirm that the component meets the required commercial temperature range specifications for the intended application environment. Ensure compatibility with existing system clock generators and bus interface logic before integration.

Microprocessors Selection Notes

Select this component for cost-sensitive designs requiring MIPS architecture compatibility without the overhead of a hardware MMU. It is suitable for applications where software-managed virtual memory is acceptable. Consider the integrated caches and programmable bus width support when evaluating system memory complexity and performance requirements.

Microprocessors Part Context

This part belongs to the IDT RISController family, which integrates standard MIPS RISC functionality into single-chip solutions. The R3041 variant specifically targets low-cost systems by omitting the Memory Management Unit found in higher-end family members like the R3051 or R3081, while maintaining pin and software compatibility.

Microprocessors Replacement Considerations

Pin-compatible alternatives within the same family include the IDT79R3051, IDT79R3052, and IDT79R3081. These variants offer larger caches or additional features such as a hardware MMU but maintain the same physical footprint and instruction set compatibility.

Microprocessors FAQ

Does the IDT79R3041 include an on-chip Memory Management Unit?

No, the IDT79R3041 does not include a TLB or hardware MMU. It relies on software-managed virtual-to-physical address mapping through the System Control Co-processor.

What is the maximum supported memory port width?

The device supports programmable memory port widths of 8-bit, 16-bit, and 32-bit, allowing for mixed-width memory sub-regions within the physical address space.