Renesas R5F526TFADFN#50

Overview

R5F526TFADFN#50 from Renesas is a 32-bit RXv3 microcontroller optimized for motor control and industrial inverter applications, operating at up to 120 MHz with 709 CoreMark performance, 512 KB on-chip code flash, 48 KB SRAM, and integrated CAN FD, high-resolution PWM (260 ps min. resolution), and dual 12-bit D/A converters. It targets real-time closed-loop motor drive systems requiring precise timing, safety compliance (IEC60730), and secure firmware execution.

For engineers reviewing the R5F526TFADFN#50 datasheet, R5F526TFADFN#50 pinout, R5F526TFADFN#50 application, or R5F526TFADFN#50 equivalent, key selection criteria include its 120-MHz GPTWa timer with 3-phase/5-phase complementary PWM support, 16 KB data flash endurance (100,000 erase/write cycles), Trusted Secure IP Lite AES-128/256 encryption, and IEC60730 self-test features including oscillation-stop detection and RAM test assistance.

Technical Context

The R5F526TFADFN#50 implements the RXv3 CPU core with single-cycle instruction execution, 111 instructions, and optional floating-point unit (FPU) for real-time trigonometric computation via TFUv2. Its clock system integrates an 8–24 MHz external crystal oscillator, internal 240-kHz LOCO, and 16/18/20 MHz HOCO, feeding a PLL to generate the 120 MHz system clock (ICLK) and independent peripheral clocks (PCLKA/B/C/D).

It features a dual-bank flash architecture enabling background programming during execution, MPU-based memory protection across eight configurable regions, and event-driven operation via ELC - allowing linked peripheral actions (e.g., MTU3d trigger → S12ADH conversion start) without CPU intervention, critical for deterministic motor control timing.

Key Specifications

Pinout & Package

Package: PWQN0048KC-A, 48-pin HWQFN, 7 × 7 mm, 0.5 mm pitch, exposed thermal pad.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar motor control MCU applications.

Compared with R5F526TFADFN#50, the R5F526TAAFDN#50 provides expanded analog acquisition capability but same package and pinout, while STM32G474RET6 offers higher CPU speed and memory but lacks native CAN FD, HRPWM, and IEC60730 hardware support - increasing system complexity and certification effort.

Availability

R5F526TFADFN#50 is available at Aetrix Electronics and suitable for industrial motor drives, home appliance inverters, PLC I/O modules, and EV onboard chargers requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for R5F526TFADFN#50 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 is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RX26T Group is designed specifically for high-performance motor control and inverter applications, integrating advanced PWM, analog, safety, and communication peripherals into a single chip to reduce system complexity and accelerate time-to-market.

FAQ

What is the maximum operating frequency and CoreMark score of the R5F526TFADFN#50?

The R5F526TFADFN#50 operates at a maximum frequency of 120 MHz and achieves 709 CoreMark performance. This benchmark reflects its RXv3 CPU core efficiency, including single-cycle instruction execution and optimized pipeline design. The R5F526TFADFN#50 delivers deterministic real-time response essential for motor control loops running at kHz-level update rates.

Does the R5F526TFADFN#50 support CAN FD, and what standard does it comply with?

Yes, the R5F526TFADFN#50 integrates a CAN FD module compliant with ISO 11898-1:2015, supporting both standard and extended frames at data rates up to 5 Mbit/s. It handles protocol-level features including bit rate switching and flexible data length. The R5F526TFADFN#50 uses this interface for high-bandwidth diagnostics and coordination in distributed motor control systems.

What PWM resolution does the R5F526TFADFN#50 achieve, and how is it implemented?

The R5F526TFADFN#50 achieves a minimum PWM edge resolution of 260 ps using its High-Resolution PWM (HRPWM) circuit, which fine-tunes the timing of GPTWa outputs (GPTW0–GPTW3). This resolution is realized at 120 MHz system clock and enables precise dead-time control for SiC/GaN power stages. The R5F526TFADFN#50 uses this capability to minimize shoot-through risk and improve inverter efficiency.

How does the R5F526TFADFN#50 support IEC60730 functional safety compliance?

The R5F526TFADFN#50 includes hardware features required for Class B IEC60730 compliance: oscillation-stop detection, ADC disconnection check, CRC-assisted RAM test (via DOC), register write protection, and independent watchdog timer (IWDTa) with window function. These capabilities allow self-test routines to run without external components. The R5F526TFADFN#50 reduces certification effort by embedding safety mechanisms directly in silicon.

What is the package type and pin count of the R5F526TFADFN#50?

The R5F526TFADFN#50 uses the PWQN0048KC-A package: a 48-pin HWQFN with 7 × 7 mm body, 0.5 mm pitch, and exposed thermal pad. It provides 37 general-purpose I/O pins, including 2× 5-V-tolerant inputs and 13 large-current outputs. The R5F526TFADFN#50's compact footprint supports high-density motor control board designs while maintaining thermal performance.