Renesas HD6417707RF60A

Overview

HD6417707RF60A from Renesas Electronics (formerly Hitachi) is a 32-bit RISC microcontroller unit (MCU) based on the SH-3 CPU core, featuring an integrated Memory Management Unit (MMU), 8 KB unified cache, and on-chip peripherals including interrupt controller, user break controller, and clock pulse generator. It operates at 60 MHz with 3.3 V supply and supports real-time OS environments in industrial control and networking applications.

For engineers reviewing the HD6417707RF60A datasheet, HD6417707RF60A pinout, HD6417707RF60A application, or HD6417707RF60A equivalent, key selection criteria include MMU support for virtual memory, 60 MHz maximum frequency, 3.3 V I/O compatibility, SH-3 instruction set compliance, and QFP-256 package footprint.

Technical Context

The HD6417707RF60A implements the SH-3 architecture with five-stage pipeline execution, 32-bit general-purpose registers, and privileged/system register banks for multitasking OS support. Its MMU provides 4 KB page granularity, TLB with 64 entries, and hardware-assisted address translation.

On-chip peripherals include a 16-interrupt priority INTC, UBC with dual address/data break points, CPG with PLL-based clock generation, and BSC supporting DRAM, SRAM, and PCMCIA interfaces - all accessible via memory-mapped I/O space.

Key Specifications

Pinout & Package

HD6417707RF60A is housed in a 256-pin plastic quad flat package (QFP) with 0.5 mm lead pitch, 28 mm × 28 mm body size, and standard JEDEC MO-140 compliance. Pin numbering follows counter-clockwise sequence from top-left corner (Pin 1 marked).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 32-bit RISC MCU applications.

Compared with HD6417707RF60A, the HD6417709T60A removes MMU capability while retaining SH-3 compatibility, whereas the R5F72036EFP shifts to SH-2A architecture with increased clock rate but eliminates both MMU and cache - making HD6417707RF60A uniquely suited for full-featured embedded OS deployment.

Availability

HD6417707RF60A is available at Aetrix Electronics and suitable for industrial PLC controllers, network router control planes, medical imaging subsystems, and automotive diagnostic tools requiring stable component supply over extended production lifecycles.

Supply support for HD6417707RF60A includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Renesas Electronics Corporation is a global semiconductor leader formed from the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, and power solutions for industrial, automotive, and infrastructure markets.

The HD6417707RF60A belongs to the SH-3 MCU product line, designed specifically for high-performance embedded applications requiring virtual memory support, real-time responsiveness, and integration of communication, control, and signal processing functions.

FAQ

What is the maximum operating frequency of the HD6417707RF60A?

The HD6417707RF60A has a maximum guaranteed operating frequency of 60 MHz under specified 3.3 V supply and ambient temperature conditions. This frequency is achieved using the on-chip PLL with CLKIN input up to 20 MHz. Operation above 60 MHz is not characterized or supported, and timing margins for external bus interfaces are defined strictly at this rated speed. The HD6417707RF60A's FRQCR register allows dynamic adjustment of PLL multiplication and division ratios to scale clock output within specification.

Does the HD6417707RF60A support virtual memory through its MMU?

Yes, the HD6417707RF60A integrates a full hardware Memory Management Unit (MMU) with 64-entry TLB and 4 KB page support, enabling virtual-to-physical address translation required by Linux and other protected-mode operating systems. The MMU is fully compliant with SH-3 architecture specifications and supports both supervisor and user mode access control. This capability is intrinsic to the HD6417707RF60A silicon and does not require external components or configuration beyond proper initialization of TLB entries and control registers.

What package type and pin count does the HD6417707RF60A use?

The HD6417707RF60A uses a 256-pin plastic quad flat package (QFP) with 0.5 mm lead pitch and 28 mm × 28 mm body dimensions, conforming to JEDEC MO-140 standard. Pin 1 is marked with a dot or notch, and numbering proceeds counter-clockwise. This package provides full access to the SH-3 bus interface, interrupt lines, clock inputs, and power/ground terminals required for standalone operation. The HD6417707RF60A's pinout is identical to other members of the SH7707 family in the same QFP-256 variant.

Can the HD6417707RF60A execute code directly from external SDRAM?

No, the HD6417707RF60A cannot execute code directly from external SDRAM due to lack of prefetch or instruction cache line fill from SDRAM without intermediate buffering. Code execution must originate from on-chip ROM, external flash memory mapped in CS0–CS3 spaces, or cached regions backed by faster memory. While the BSC supports SDRAM refresh and access, instruction fetch latency and pipeline stalls make direct SDRAM execution impractical. The HD6417707RF60A relies on its 8 KB unified cache to accelerate code fetch from external memory, but the cache must be preloaded or managed via software-controlled cache operations.

Is the HD6417707RF60A compatible with the SH-3 instruction set architecture?

Yes, the HD6417707RF60A is fully compliant with the SH-3 instruction set architecture as defined by Hitachi and maintained by Renesas. It supports all SH-3 integer instructions, addressing modes, privilege levels, and exception handling mechanisms. Binary object files compiled for other SH-3 devices - such as HD6417708 or HD6417709 - will execute correctly on the HD6417707RF60A provided memory map and peripheral initialization match. This architectural consistency is a core design feature of the HD6417707RF60A and enables software portability across the SH-3 family.