Renesas R5F72434N100FP#UC

Overview

R5F72434N100FP#UC 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 SCI, I²C, CAN, and 12-bit ADC. It operates at up to 100 MHz and targets industrial motor control and embedded automation systems requiring deterministic real-time response.

For engineers reviewing the R5F72434N100FP#UC datasheet, R5F72434N100FP#UC pinout, R5F72434N100FP#UC application, or R5F72434N100FP#UC equivalent, key selection criteria include its SH-2A CPU architecture, 100-pin LQFP package, CAN 2.0B interface support, 12-bit ADC with 16-channel input, and operating temperature range of −40°C to +85°C.

Technical Context

The R5F72434N100FP#UC implements the SH-2A superscalar RISC core with dual-issue pipeline, supporting both integer and floating-point operations via optional FPU extension. It integrates a Clock Pulse Generator (CPG) with PLL for flexible clock synthesis, and a Data Transfer Controller (DTC) enabling autonomous peripheral-to-memory transfers without CPU intervention.

Its system architecture includes an on-chip bus controller (BSC), interrupt controller (INTC) with 128 vector entries, and peripheral modules such as MTU2S timer units, watchdog timer (WDT), and USB 2.0 function controller. Memory protection is enforced via MPU with region-based access control.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch), thermally enhanced with exposed pad for improved heat dissipation in motor drive applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F72434N100FP#UC, the R5F72435N100FP#UC provides scalable memory headroom for future feature upgrades without PCB redesign, while the R5F72425N100FP#UC offers material cost reduction where application complexity permits smaller memory allocation.

Availability

R5F72434N100FP#UC is available at Aetrix Electronics and suitable for industrial motor control, factory automation PLCs, and smart building BMS requiring stable component supply across multi-year production cycles.

Supply support for R5F72434N100FP#UC 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 industrial, automotive, and enterprise applications.

The SH7243 Group-including R5F72434N100FP#UC-is designed for deterministic real-time embedded control in harsh industrial environments, emphasizing robust timing, integrated motor control peripherals, and long-term supply assurance.

FAQ

What is the maximum operating frequency of the R5F72434N100FP#UC?

The R5F72434N100FP#UC operates at a maximum CPU frequency of 100 MHz, achieved using its on-chip Clock Pulse Generator (CPG) with PLL circuitry. This frequency is sustained across the full industrial temperature range (−40°C to +85°C) when powered within specified voltage limits (3.0 V to 3.6 V). The R5F72434N100FP#UC achieves this performance without external clock multiplication ICs, simplifying board design and reducing BOM cost.

Does the R5F72434N100FP#UC support CAN FD or only classical CAN 2.0B?

The R5F72434N100FP#UC supports only CAN 2.0B protocol compliance-not CAN FD. Its integrated CAN controller implements ISO 11898-1:2003 with bit rates up to 1 Mbit/s, 64 message object buffers, and hardware acceptance filtering. CAN FD features such as variable data length (up to 64 bytes) and higher bit rates are not present in the R5F72434N100FP#UC's peripheral set per the SH7243 Group Hardware User's Manual Rev. 3.00.

Is the R5F72434N100FP#UC pin-compatible with other SH7243 Group devices?

Yes, the R5F72434N100FP#UC is pin-compatible with all 100-pin LQFP variants in the SH7243 Group, including R5F72425N100FP#UC and R5F72435N100FP#UC. Pin assignments for power, clocks, reset, JTAG, SCI, CAN, ADC, and MTU2S peripherals are identical across these variants. This allows direct substitution in existing layouts when scaling memory or adjusting cost targets without PCB revision.

What debug interface does the R5F72434N100FP#UC provide?

The R5F72434N100FP#UC supports on-chip debugging via the standard JTAG interface (IEEE 1149.1), compatible with Renesas E2 emulator and third-party debuggers. It includes full boundary-scan capability, real-time trace via the on-chip trace buffer, and hardware breakpoints. No SWD or cJTAG is supported-the R5F72434N100FP#UC relies exclusively on 5-pin JTAG (TCK, TMS, TDI, TDO, TRST#) for development and production programming.

Does the R5F72434N100FP#UC include hardware encryption accelerators?

No, the R5F72434N100FP#UC does not integrate dedicated hardware encryption accelerators such as AES, SHA, or RSA engines. Security functions rely on software implementation using the SH-2A core's instruction set. For applications requiring cryptographic acceleration, Renesas recommends pairing the R5F72434N100FP#UC with external secure elements or selecting higher-tier devices like the RA6 series with TrustZone-enabled cryptography peripherals.