Renesas R5F526TFADFP#50

Overview

R5F526TFADFP#50 from Renesas is a 32-bit RXv3 microcontroller optimized for motor control and industrial inverter applications, featuring a 120 MHz CPU core, 512 KB on-chip code flash, 64 KB SRAM, 16 KB data flash, integrated CAN FD interface, and high-resolution PWM with 260 ps timing resolution. It supports IEC60730 safety compliance and operates across –40°C to +85°C.

For engineers reviewing the R5F526TFADFP#50 datasheet, R5F526TFADFP#50 pinout, R5F526TFADFP#50 application, or R5F526TFADFP#50 equivalent, key selection considerations include its 100-pin LFQFP package, dual-bank flash for safe firmware updates, 3-phase/5-phase complementary PWM capability, hardware-accelerated trigonometric functions (TFUv2), and Trusted Secure IP Lite encryption engine with AES-128/256 support.

Technical Context

The R5F526TFADFP#50 implements the RXv3 CPU core with single-cycle instruction execution, 113 instructions, and optional big-endian data handling. Its clock system integrates a PLL with external 8–24 MHz crystal reference, internal HOCO (16/18/20 MHz), and dedicated 120 kHz IWDT oscillator - enabling independent watchdog operation during deep sleep.

Peripheral synchronization is segmented across four clock domains: ICLK (up to 120 MHz for CPU), PCLKA (120 MHz for MTU/GPTW/HRPWM/CAN FD), PCLKB (60 MHz for SCI/RSCI/RIIC), and PCLKD (60 MHz for S12ADH). The ELC enables 183 internal event signals to trigger module operations without CPU intervention - critical for deterministic motor control timing.

Key Specifications

Pinout & Package

Package: PLQP0100KB-B - 100-pin Low-Profile Quad Flat Package, 14 × 14 mm body, 0.5 mm lead pitch, exposed thermal pad, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F526TAAFP#50 and R5F523T5ADFP#50, the R5F526TFADFP#50 uniquely delivers full 512 KB dual-bank flash, complete 3-unit S12ADH sampling, HRPWM timing, and TFUv2 acceleration - making it the only RX26T variant qualified for high-fidelity field-oriented control in safety-certified industrial inverters.

Availability

R5F526TFADFP#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 R5F526TFADFP#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 Corporation is a global semiconductor leader headquartered in Tokyo, Japan, specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RX26T Group - including the R5F526TFADFP#50 - was designed specifically for high-performance, safety-compliant motor control in industrial inverters and appliance compressors, integrating precision PWM, real-time signal processing, and functional safety accelerators.

FAQ

What is the maximum operating frequency and CoreMark score of the R5F526TFADFP#50?

The R5F526TFADFP#50 operates at a maximum frequency of 120 MHz and achieves 709 CoreMark in benchmark testing. This performance stems from the RXv3 CPU core's single-cycle instruction execution, 32-bit multiplier/divider, and barrel shifter - all verified in the official R01DS0407EJ0120 datasheet Rev.1.20. The R5F526TFADFP#50 sustains this speed with no-wait access to both 512 KB flash and 64 KB SRAM.

Does the R5F526TFADFP#50 support IEC60730 Class B compliance out of the box?

Yes, the R5F526TFADFP#50 includes dedicated hardware features for IEC60730 Class B compliance: oscillation-stop detection, RAM test assist via DOC, CRCA for memory integrity checking, analog comparator self-test, and clock accuracy measurement circuit. These are documented in Section 1.1 and Table 1.1 of the R01DS0407EJ0120 datasheet. The R5F526TFADFP#50 also supports register write protection to prevent unintended configuration changes during runtime.

What PWM resolution does the R5F526TFADFP#50 achieve, and which peripherals deliver it?

The R5F526TFADFP#50 achieves a minimum PWM timing resolution of 260 ps using its High-Resolution PWM (HRPWM) module, which enhances the timing control of GPTW0 through GPTW3 outputs. This capability is explicitly specified in the "High-resolution PWM waveform generation circuit (HRPWM)" section of the R01DS0407EJ0120 datasheet. The R5F526TFADFP#50 uses this feature to implement precise dead-time insertion for SiC/GaN inverter gate drivers without software overhead.

Which communication interfaces with functional safety relevance are integrated into the R5F526TFADFP#50?

The R5F526TFADFP#50 integrates CAN FD (compliant with ISO11898-1:2015), which supports error-checking, message filtering, and robust frame formatting essential for safety-critical communication in motor drives. Its RIICa interface supports SMBus operation with CRC-based packet validation, and the ELC enables hardware-triggered A/D conversion - eliminating software-induced timing faults. All are confirmed in the R01DS0407EJ0120 datasheet. The R5F526TFADFP#50 leverages these to meet SIL2-ready system requirements.

What is the flash memory architecture of the R5F526TFADFP#50, and how does it benefit firmware updates?

The R5F526TFADFP#50 features a dual-bank flash architecture with 512 KB total capacity, enabling background programming (BGO) - meaning firmware can be written to one bank while the CPU executes code from the other. This allows seamless, zero-downtime field updates, critical for industrial systems that cannot halt operation. The Trusted Memory (TM) function further protects code in designated flash regions from unauthorized read access. This architecture is fully detailed in Section 1.1 of the R01DS0407EJ0120 datasheet for the R5F526TFADFP#50.