Renesas HD6417612RFV

Overview

HD6417612RFV from Renesas Electronics (formerly Hitachi) is a 32-bit SuperH RISC microcontroller featuring the SH-2 CPU core, integrated 16 KB on-chip SRAM, 128 KB on-chip ROM, and peripheral modules including DMAC, FRT, WDT, SCI/SCIF, SIO, TPU, and H-UDI debug interface. It operates at up to 40 MHz with 3.3 V supply and supports synchronous DRAM, pseudo-SRAM, and DRAM interfaces without glue logic - used in industrial control and embedded networking systems.

For engineers reviewing the HD6417612RFV datasheet, HD6417612RFV pinout, HD6417612RFV application, or HD6417612RFV equivalent, key selection considerations include its FP-176C 176-pin plastic QFP package, 32-bit multiplier for MAC operations, bus control register (BCR1) configuration for external memory timing, and H-UDI debug support requiring dedicated FP-176C debug chip.

Technical Context

The HD6417612RFV implements the SH-2 architecture with upward compatibility to SH7000 Series instructions, executing basic RISC instructions in one system clock cycle. Its on-chip cache improves instruction throughput, while bus control logic enables direct connection to synchronous DRAM and pseudo-SRAM via programmable timing registers (BCR1, BCR2).

Peripheral integration includes a 4-channel DMAC supporting dual-address mode transfers of 1/2/4/16-byte units, a 16-bit free-running timer (FRT) with input capture, watchdog timer (WDT), and serial interfaces (SCI, SCIF, SIO) with FIFO and IrDA support. The H-UDI interface requires five dedicated pins and only functions with FP-176C-package debug chips.

Key Specifications

Pinout & Package

HD6417612RFV is housed in the FP-176C package: a 176-pin plastic quad flat pack with 0.5 mm lead pitch and 24 mm × 24 mm body size. Pin assignments are defined per Figure 1.2 of ADE-602-153A Rev. 2.0.

Key Features

Applications

Equivalent & Alternatives

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

Compared with HD6417612RFV, HD6417613RFV trades on-chip SRAM for doubled ROM capacity in the same footprint, while R5F72112EFP offers architectural evolution with Ethernet and modern peripherals - neither is pin-compatible, and migration requires full hardware and software redesign.

Availability

HD6417612RFV is available at Aetrix Electronics and suitable for industrial PLC controllers, networked gateway devices, embedded motion controllers, and smart power metering units requiring stable component supply across extended production lifecycles.

Supply support for HD6417612RFV 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, formed from the merger of NEC Electronics and Renesas Technology, is a global semiconductor leader specializing in microcontrollers, analog, and power solutions for industrial, automotive, and infrastructure markets.

The HD6417612RFV belongs to the SuperH SH7612 family - designed for cost-sensitive, high-reliability embedded control applications where deterministic real-time response, integrated peripherals, and low-power operation are essential.

FAQ

What is the maximum operating frequency of the HD6417612RFV?

The HD6417612RFV operates at a maximum frequency of 40 MHz under specified conditions (VCC = 3.0–3.6 V, Ta = –20°C to +75°C). This frequency is achieved using the on-chip PLL with an external crystal or clock source applied to the CLKIN pin. The HD6417612RFV's timing specifications - including bus cycles and interrupt latency - are validated at this speed, and exceeding it may result in undefined behavior or timing violations.

Does the HD6417612RFV support external synchronous DRAM directly?

Yes, the HD6417612RFV supports direct connection to synchronous DRAM without glue logic, enabled by its programmable bus controller (BCR1/BCR2) and dedicated SDRAM control signals (CAS, RAS, WE, DQM). Timing parameters such as tRCD, tRP, and burst length are configured via registers, and the hardware manual (ADE-602-153A) provides validated timing diagrams for modes 1 and 5 (PLL-On) and mode 2 (PLL-Off). The HD6417612RFV does not support DDR SDRAM.

Can the HD6417612RFV be debugged using an E10A emulator?

Yes, the HD6417612RFV supports debugging with both E10 and E10A emulators, but only when used with a dedicated FP-176C debug chip - no TBP-176 debug chip is available. The H-UDI interface (pins 145–149) must remain unconnected to general-purpose I/O during emulation. The HD6417612RFV does not support JTAG or SWD; H-UDI is its sole on-chip debug interface.

What peripheral modules are integrated into the HD6417612RFV?

The HD6417612RFV integrates a comprehensive set of peripherals: interrupt controller (INTC), 4-channel DMAC, division unit (DIVU), 16-bit free-running timer (FRT), watchdog timer (WDT), serial communication interface (SCI), serial communication interface with FIFO (SCIF), serial I/O (SIO), 16-bit timer-pulse unit (TPU), Hitachi User Debug Interface (H-UDI), and pin function controller (PFC). These modules reduce external component count and enable self-contained system designs - all documented in Sections 1.6 and 5–19 of the HD6417612RFV hardware manual.

Is the HD6417612RFV pin-compatible with other SH7612 variants like HD6417612TVP?

No, the HD6417612RFV is not pin-compatible with HD6417612TVP. The HD6417612RFV uses the FP-176C package (plastic QFP), while HD6417612TVP uses the TBP-176 package (ceramic QFP) - differing in material, thermal characteristics, and mechanical dimensions. Although both share identical signal definitions and electrical behavior, their land patterns, solder reflow profiles, and mechanical mounting requirements differ. The HD6417612RFV hardware manual explicitly states that E10/E10A debug chips are only available in FP-176C.