IDT79RC32V332-100DH

The IDT79RC32V332-100DH is a single-core, 32-bit microprocessor from the Interprise family implemented with a MIPS-II core and specified for 100 MHz operation. It combines on-chip CPU, memory controllers and peripheral interfaces to support embedded and communications-oriented consumer applications that require external memory and standard I/O connectivity.

Designed for 3.3 V I/O and supplied in a 208-PQFP (28×28) surface-mount package, the device targets designs that need a compact, integrated processing element with on-chip caches, MMU and a range of peripheral controllers while maintaining RoHS compliance.

Key Features

• Core  MIPS-II 32-bit CPU core, implemented as one core operating at 100 MHz; includes enhanced MIPS-II ISA features described for the Interprise family such as conditional move and DSP instructions.
• Cache and MMU  On-chip memory management and caches including an MMU with a 32-page TLB, an 8 KB instruction cache and a 2 KB data cache with locking and programmable cache policies.
• Memory Subsystem  Integrated SDRAM controller (32-bit) supporting up to four banks and up to 512 MB total SDRAM in the series specification, with automatic refresh and direct control of discrete or DIMM/SODIMM memory devices.
• Local Bus & Boot  Local bus interface with 23-bit address and 32-bit data bus operation (local bus up to 75 MHz in the series specification) and support for an 8-bit boot PROM.
• Peripheral Interfaces  Built-in peripheral support including a 16550-compatible UART (baud support up to 1.5 Mb/s as noted in the series), SPI master-mode interface, PCI bridge and a flexible memory & peripheral controller with six banks supporting Flash, SRAM and peripheral devices.
• Timers, DMA & PIO  Four general-purpose 32-bit timers/counters, four DMA channels and programmable I/O lines that can be configured as inputs, outputs or interrupt sources.
• Power & Packaging  3.3 V I/O voltage, surface-mount 208-PQFP (28×28) package, supplied in tray format; qualification level: Consumer.
• Operating Range & Compliance  Rated for 0 °C to 70 °C operating temperature and RoHS compliant.

Typical Applications

• Integrated Communications Equipment  Suitable for embedded communications processors and protocol handling where on-chip UART, SPI and DMA reduce external components.
• Embedded Systems with External Memory  Ideal for designs that require a 32-bit processor with an SDRAM controller and flexible boot options for Flash or PROM-based boot sequences.
• Consumer Electronics  Targeted to consumer-grade products that need a compact surface-mount MPU with mainstream temperature qualification and RoHS compliance.

Unique Advantages

• Integrated System-Level Functionality: Combines CPU, MMU, caches, SDRAM controller and peripheral controllers on a single chip to reduce BOM and simplify board design.
• Flexible Memory Support: Memory controller and local bus support multiple interface widths (8/16/32-bit) and a range of memory types for adaptable system architectures.
• Peripheral Rich I/O: On-chip UART, SPI, DMA and programmable I/O provide the connectivity needed for diverse embedded applications without adding separate controllers.
• Compact Surface-Mount Package: 208-PQFP (28×28) packaging enables a dense PCB layout while remaining compatible with standard surface-mount assembly processes.
• Regulatory and Environmental Compliance: RoHS compliance supports environmentally conscious manufacturing and end-product requirements.

Why Choose IDT79RC32V332-100DH?

The IDT79RC32V332-100DH positions itself as a practical, integrated 32-bit processing option for consumer-oriented embedded designs that require a MIPS-II core, on-chip memory management and multiple peripheral interfaces. Its combination of cache, MMU, SDRAM controller and peripheral controllers enables compact system designs with fewer external components.

This part is well suited to designers seeking a 3.3 V, surface-mount MPU in a 208-PQFP package for applications that operate within the 0 °C to 70 °C range and require RoHS-compliant components. The device’s series-level features provide a flexible foundation for systems that need external memory and robust peripheral support.

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