79RC32K438-300BBG

The 79RC32K438-300BBG is a single‑core, 32‑bit MIPS32 microprocessor operating at 300 MHz, supplied in a 416‑PBGA (27×27) package for surface mount assembly. Designed for embedded and consumer applications, it combines a MIPS32 CPU core with integrated memory and peripheral controllers to support communication, control and system‑level functions within a compact package and standard 3.3 V I/O.

Key value propositions include integrated memory controller support and a broad set of on‑chip interfaces that reduce external components and simplify system design for mid‑range embedded products operating within a 0 °C to 70 °C range.

Key Features

• CPU Core — MIPS32 32‑bit core, single core at 300 MHz providing deterministic single‑threaded processing for embedded control and communication tasks.
• Cache and MMU — Includes 16 KB instruction and 16 KB data caches (4‑way set associative) and translation lookaside buffers (16 dual‑entry JTLB, 3‑entry instruction and data TLBs) to improve code and data locality.
• DDR Memory Controller — Integrated DDR controller supporting up to 2 GB of DDR SDRAM with automatic refresh and support for 16‑bit or 32‑bit data bus widths and multiple device sizes.
• Memory & Peripheral Bus — Glueless interface to standard SRAM, Flash and ROM with demultiplexed address/data buses, programmable wait states and per‑chip select write protect.
• DMA and Timers — 10 DMA channels with flexible descriptor operation and support for unaligned transfers; three general‑purpose 32‑bit counter/timers for system timing and event counting.
• Network and I/O Interfaces — Two 10/100 Mb/s Ethernet interfaces with MII, serial management and auto‑negotiation support; built‑in UARTs (16550), SPI and I²C peripherals for typical embedded communications.
• PCI Support — 32‑bit PCI interface compliant with PCI revision 2.2 (3.3 V), supporting host or target operation and master/target modes with arbitration features.
• Package and Power — 416‑PBGA (27×27) supplier device package, surface mount, I/O voltage 3.3 V, supplied in tray format.
• Operating Range and Compliance — Consumer‑grade qualification with operating temperature range of 0 °C to 70 °C and RoHS compliant.

Typical Applications

• Embedded Communications — Use the integrated Ethernet interfaces and DMA channels to implement networked controllers and protocol bridges.
• Industrial and Consumer Controllers — Single‑core MIPS32 processing with on‑chip timers and peripheral buses for control, HMI support and local device management.
• Memory‑centric Systems — DDR memory controller and flexible peripheral bus make it suitable for systems requiring external DDR SDRAM and direct memory access.

Unique Advantages

• Integrated Memory Subsystem: On‑chip DDR controller and peripheral bus reduce external logic and simplify board layout for memory‑heavy designs.
• Comprehensive On‑Chip Peripherals: Ethernet, UARTs, SPI, I²C and PCI interfaces provide diverse connectivity options without adding discreet controllers.
• Efficient Data Movement: Ten DMA channels and support for unaligned transfers accelerate bulk and peripheral data transfers while offloading the CPU.
• Optimized Cache and MMU: Instruction/data caches and multiple TLB entries improve runtime efficiency and address translation for embedded operating environments.
• Compact Surface‑Mount Package: 416‑PBGA (27×27) package enables high‑density board designs while supporting standard assembly processes.

Why Choose 79RC32K438-300BBG?

The 79RC32K438-300BBG positions itself as a balanced embedded processor that combines a 300 MHz MIPS32 core with a rich set of integrated controllers—DDR memory, PCI, Ethernet and multiple serial buses—delivering system integration and reduced BOM for mid‑range embedded and consumer applications. Its configuration supports designers who need deterministic single‑core performance with on‑chip peripherals to shorten development time and simplify system architecture.

Ideal for projects that require reliable network connectivity, external DDR memory support and flexible I/O at 3.3 V, this device offers long‑term value through consolidated functionality and supplier documentation to support system integration and validation within the specified operating range.

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