Renesas R5F526TFDDFL#50

Overview

R5F526TFDDFL#50 from Renesas is a 32-bit RXv3 microcontroller optimized for motor control and power conversion, featuring 120 MHz operation, 512 KB on-chip code flash, 64 KB SRAM, 16 KB data flash, integrated CAN FD, 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 R5F526TFDDFL#50 datasheet, R5F526TFDDFL#50 pinout, R5F526TFDDFL#50 application, or R5F526TFDDFL#50 equivalent, key selection considerations include its 100-pin LQFP 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.

Technical Context

The R5F526TFDDFL#50 implements the RXv3 CPU core with single-cycle instruction execution, IEEE 754-compliant FPU, and collective register bank save for fast context switching. Its clock system integrates PLL, HOCO/LOCO oscillators, and independent IWDT-dedicated 120 kHz oscillator - enabling precise timing control for motor commutation and safety-critical monitoring.

Peripheral integration centers on deterministic real-time control: GPTWa (8-channel 32-bit timer) and MTU3d (9-channel 16-bit timer) operate synchronously at up to 120 MHz on PCLKA/PCLKC, while ELC enables interrupt-free inter-module event chaining - critical for synchronized PWM, ADC triggering, and fault response in inverters and servo drives.

Key Specifications

Pinout & Package

Package: PLQP0100KB-B - 100-pin Low-profile Quad Flat Package, 14 mm × 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 R5F526TFDDFL#50, the R5F526TADDFL#50 offers identical timing, safety, and interface capabilities at reduced memory cost, while the R5F566TEADFP#30 delivers higher compute throughput and scalability at the expense of migration effort - neither is pin-compatible, but both share the RXv3 architecture and toolchain.

Availability

R5F526TFDDFL#50 is available at Aetrix Electronics and suitable for industrial inverter drives, brushless DC motor controllers, onboard chargers, uninterruptible power supplies, and grid-tied solar inverters requiring stable component supply and long-term manufacturing continuity.

Supply support for R5F526TFDDFL#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 R5F526TFDDFL#50 - was designed specifically for high-efficiency, safety-certifiable motor control and power conversion applications, integrating precision PWM, real-time analog acquisition, and functional safety features in a single chip.

FAQ

What is the maximum operating frequency and CPU architecture of the R5F526TFDDFL#50?

The R5F526TFDDFL#50 operates at a maximum frequency of 120 MHz using the 32-bit RXv3 CPU core. It achieves 709 CoreMark performance and supports single-cycle instruction execution, IEEE 754-compliant floating-point arithmetic via integrated FPU, and collective register bank save for rapid context switching - all critical for deterministic motor control loop execution in the R5F526TFDDFL#50.

Does the R5F526TFDDFL#50 support IEC60730 Class B compliance?

Yes, the R5F526TFDDFL#50 includes dedicated hardware features for IEC60730 Class B compliance: oscillation-stop detection, RAM test assist (DOC), CRC calculator (CRCA), analog input disconnection detection, clock accuracy measurement, and register write protection. These are documented in the R01DS0407EJ0120 datasheet and enable simplified certification of motor control systems built around the R5F526TFDDFL#50.

What PWM resolution and configurations does the R5F526TFDDFL#50 support?

The R5F526TFDDFL#50 supports 10 single-phase, 3 three-phase, or 2 five-phase complementary PWM outputs via GPTWa and MTU3d timers. Its High-Resolution PWM (HRPWM) circuit provides minimum 260 ps edge placement resolution on GPTW0–GPTW3 channels when operating at 120 MHz - enabling precise dead-time control and reduced electromagnetic interference in inverter gate driving applications using the R5F526TFDDFL#50.

Is the R5F526TFDDFL#50 pin-compatible with other RX26T group MCUs?

The R5F526TFDDFL#50 uses a 100-pin LQFP (PLQP0100KB-B) package and is pin-compatible with other RX26T devices in the same 100-pin variant, such as R5F526TADDFL#50 and R5F526TBDDFL#50. Pin compatibility includes identical power, clock, reset, ADC, PWM, and communication interface assignments - allowing shared PCB design across memory-variant SKUs of the R5F526TFDDFL#50 family.

What security features are integrated into the R5F526TFDDFL#50?

The R5F526TFDDFL#50 integrates Trusted Secure IP Lite, featuring hardware AES-128/256 engines (ECB/CBC/GCM), a true random number generator, secure key management, and Trusted Memory (TM) protection that prevents unauthorized read access to code flash. These features enable secure boot, firmware authentication, and encrypted parameter storage - essential for protecting intellectual property and ensuring system integrity in the R5F526TFDDFL#50.