Renesas HD64F7051SFJ22

Overview

HD64F7051SFJ22 from Renesas Technology Corp. is a 32-bit RISC microcontroller in the SH7050 series, featuring a SuperH RISC CPU core, 512 KB on-chip flash memory, 32 KB SRAM, DMA controller, A/D converter, and SCI interface. It operates at up to 22 MHz and targets real-time embedded control applications requiring high instruction throughput and integrated peripherals.

For engineers reviewing the HD64F7051SFJ22 datasheet, HD64F7051SFJ22 pinout, HD64F7051SFJ22 application, or HD64F7051SFJ22 equivalent, key selection criteria include flash programmability, 22 MHz system clock support, external bus interface timing, interrupt priority handling, and compatibility with SH-2 instruction set architecture.

Technical Context

The HD64F7051SFJ22 implements the SH-2 CPU core with single-cycle execution for most instructions, 32-bit internal data paths, and a 22 MHz maximum system clock derived from an external crystal or oscillator via the Clock Pulse Generator (CPG). It supports both mask ROM and flash variants, with this part being flash-programmable.

Its Bus State Controller (BSC) provides configurable wait-state generation, CS assertion timing, and RAM emulation mode for seamless external memory expansion. The Direct Memory Access Controller (DMAC) supports four independent channels with dual-address and indirect addressing modes for efficient peripheral-to-memory transfers.

Key Specifications

Pinout & Package

HD64F7051SFJ22 is housed in a 128-pin LQFP (14 mm × 20 mm, 0.4 mm pitch) package with dedicated power/ground pairs, multiplexed address/data bus lines (AD0–AD15), control signals (AS#, WR#, RD#), and peripheral-specific pins including SCI TXD/RXD, timer I/O, and A/D input channels.

Key Features

Applications

Equivalent & Alternatives

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

Compared with HD64F7051SFJ22, HD64F7052SFJ22 adds flash capacity without changing speed or package, while HD64F7051SFJ25 increases clock margin but retains identical memory resources-both require validation of thermal and signal integrity at their respective operating frequencies.

Availability

HD64F7051SFJ22 is available at Aetrix Electronics and suitable for industrial PLCs, automated test equipment, motor drive controllers, building energy management systems, and embedded instrumentation requiring stable component supply and long-term obsolescence planning.

Supply support for HD64F7051SFJ22 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 Technology Corp. was formed in 2003 through the merger of Hitachi and Mitsubishi Electric's semiconductor businesses, specializing in microcontrollers, analog, and power devices for industrial and automotive markets.

The SH7050 series-including HD64F7051SFJ22-was designed for cost-sensitive, high-reliability real-time control applications where integrated flash, deterministic interrupt handling, and external memory expansion are essential.

FAQ

What is the maximum operating frequency of the HD64F7051SFJ22?

The HD64F7051SFJ22 is rated for a maximum system clock frequency of 22 MHz. This specification is defined by its internal CPG circuitry and validated timing margins for all on-chip peripherals including the CPU core, DMAC, and A/D converter. Operation beyond 22 MHz may result in undefined behavior or timing violations. The HD64F7051SFJ22 achieves single-cycle instruction execution for most SH-2 instructions at this frequency.

Does the HD64F7051SFJ22 support in-system programming of its flash memory?

Yes, the HD64F7051SFJ22 supports in-system programming (ISP) of its 512 KB on-chip flash memory. Programming can be performed via a standard SH-series programmer or through user-developed boot loader code executed from SRAM. The HD64F7051SFJ22 does not require UV erasure or socket programming, enabling field firmware updates without hardware replacement.

What peripheral interfaces are integrated into the HD64F7051SFJ22?

The HD64F7051SFJ22 integrates a serial communication interface (SCI), 10-bit 8-channel A/D converter, Advanced Timer Unit (ATU) with PWM and capture capability, Direct Memory Access Controller (DMAC) with four channels, and an Interrupt Controller (INTC) with eight priority registers. It also includes a Clock Pulse Generator (CPG) and Bus State Controller (BSC) for external memory interfacing.

Is the HD64F7051SFJ22 pin-compatible with other SH7050 series microcontrollers?

Yes, the HD64F7051SFJ22 shares the same 128-pin LQFP package and pin assignment with other SH7050 series members including HD64F7052SFJ22 and HD64F7051SFJ25. Pin compatibility extends to power, clock, reset, bus signals (AD0–AD15, AS#, RD#, WR#), and peripheral I/O such as SCI, A/D inputs, and timer outputs-enabling drop-in substitution within the same speed and memory class.

What development tools are recommended for the HD64F7051SFJ22?

Renesas recommends the HEW (High-performance Embedded Workshop) IDE with the SH-2 compiler suite and E8/E10 emulator for HD64F7051SFJ22 development. Hardware debug support includes the User Break Controller (UBC) for non-intrusive breakpointing and trace. The HD64F7051SFJ22 is also supported by third-party toolchains compliant with the SH-2 ABI and ELF object format.