Renesas R5F72434D100FP#U0

Overview

R5F72434D100FP#U0 from Renesas Electronics is a 32-bit RISC microcontroller based on the SuperH™ SH-2A core, featuring 512 KB on-chip Flash memory, 64 KB RAM, and integrated peripherals including CAN controller, SCI, I²C, and 12-bit ADC. It operates at up to 100 MHz and targets automotive body control and industrial motor control applications requiring real-time deterministic response.

For engineers reviewing the R5F72434D100FP#U0 datasheet, R5F72434D100FP#U0 pinout, R5F72434D100FP#U0 application, or R5F72434D100FP#U0 equivalent, key selection criteria include its 100-pin LQFP package, CAN 2.0B compliance, 12-bit ADC with 16-channel input multiplexer, and support for single-chip mode with external bus interface disabled - critical for space-constrained embedded control designs.

Technical Context

The R5F72434D100FP#U0 implements the SH-2A CPU core with 32-bit integer execution, five-stage pipeline, and hardware multiply/divide unit. It integrates a Clock Pulse Generator (CPG) supporting PLL-based clock synthesis, multiple low-power modes (HALT, STOP, and SLEEP), and a Data Transfer Controller (DTC) enabling autonomous peripheral-to-memory transfers without CPU intervention.

Peripheral integration includes a 32-bit MTU2S timer with complementary PWM output, a 16-channel 12-bit ADC with sample-and-hold and scan conversion, and dual CAN controllers compliant with ISO 11898-1:2003. The device supports external memory expansion via 16-bit data/24-bit address bus in MCU extension modes.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch), thermally enhanced with exposed pad (EPAD) connected to VSS for improved heat dissipation in continuous motor control operation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with R5F72434D100FP#U0, the R5F72435D100FP#U0 offers scalable memory headroom without design rework, while the R5F72425D100FP#U0 reduces BOM cost where memory constraints are verified - both maintain identical real-time performance, peripheral timing, and qualification grade for automotive body electronics.

Availability

R5F72434D100FP#U0 is available at Aetrix Electronics and suitable for automotive body control modules, industrial BLDC motor drives, smart power distribution units, and programmable logic controller I/O modules requiring stable component supply across multi-year production cycles.

Supply support for R5F72434D100FP#U0 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 specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets, with headquarters in Tokyo, Japan.

The SH7243 Group - including the R5F72434D100FP#U0 - was designed specifically for real-time automotive body electronics and industrial motion control, emphasizing CAN robustness, analog precision, and deterministic interrupt latency under harsh electrical environments.

FAQ

What is the maximum operating frequency of the R5F72434D100FP#U0?

The R5F72434D100FP#U0 operates at a maximum CPU frequency of 100 MHz, achieved via its integrated Clock Pulse Generator (CPG) with PLL-based clock synthesis. This frequency is sustained across the full industrial temperature range (−40°C to +105°C) when powered within the specified 3.0 V to 3.6 V supply range and with appropriate decoupling. The R5F72434D100FP#U0 maintains instruction cycle timing consistency at this speed, enabling precise real-time control loop execution.

Does the R5F72434D100FP#U0 support CAN FD?

No, the R5F72434D100FP#U0 supports only Classical CAN (CAN 2.0B) with bit rates up to 1 Mbps, as confirmed in the SH7243 Group Hardware User's Manual Rev.3.00. It does not implement CAN FD physical layer signaling or protocol extensions such as flexible data-rate or extended data length. For CAN FD requirements, designers must select a newer Renesas RA or RH850 family device. The R5F72434D100FP#U0 remains fully compliant with ISO 11898-1:2003 for legacy automotive network integration.

What debug interface does the R5F72434D100FP#U0 use?

The R5F72434D100FP#U0 uses the IEEE 1149.1 JTAG interface for on-chip debugging, supporting full boundary-scan, real-time trace, and non-intrusive breakpoint execution via Renesas E1 or E20 emulators. This interface provides access to all CPU registers, memory spaces, and peripheral control registers during development and validation. The R5F72434D100FP#U0 does not support SWD or cJTAG; JTAG is the sole standardized debug path defined in its hardware manual.

Is the R5F72434D100FP#U0 qualified for automotive applications?

Yes, the R5F72434D100FP#U0 is manufactured and tested to Renesas' "High Quality" grade, qualifying it for automotive transportation equipment including body control modules, lighting systems, and HVAC controls - as explicitly stated in Section 7 of the User's Manual. It meets AEC-Q100 Grade 2 (−40°C to +105°C) requirements and supports automotive-specific features such as CAN 2.0B, fail-safe reset behavior, and watchdog windowing. The R5F72434D100FP#U0 is not rated for "Specific" applications like airbag controllers or ADAS domain controllers.

How much user-accessible Flash memory does the R5F72434D100FP#U0 provide?

The R5F72434D100FP#U0 provides 512 KB of on-chip Flash memory, all of which is user-programmable and accessible for application code and data storage. This includes support for in-system programming (ISP) and in-application programming (IAP) via the built-in Flash memory controller. No portion is reserved exclusively for bootloader or factory calibration - the full 512 KB is available to the end-user firmware, subject to proper sector locking and erase/write sequencing as defined in the R5F72434D100FP#U0 hardware manual.