Renesas R5F526TBDDFL#50

Overview

R5F526TBDDFL#50 from Renesas is a 32-bit RXv3 microcontroller optimized for motor control and industrial inverter applications, featuring 120 MHz operation, 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 includes Trusted Secure IP Lite encryption.

For engineers reviewing the R5F526TBDDFL#50 datasheet, R5F526TBDDFL#50 pinout, R5F526TBDDFL#50 application, or R5F526TBDDFL#50 equivalent, key selection criteria include its 100-pin LFQFP package, dual-bank flash for safe firmware updates, simultaneous sampling across three 12-bit A/D units, 3-phase/5-phase complementary PWM capability, and hardware-accelerated trigonometric functions via TFUv2.

Technical Context

The R5F526TBDDFL#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 (16/18/20 MHz), LOCO (240 kHz), and IWDT-dedicated 120 kHz oscillator - enabling independent peripheral clock domains (PCLKA up to 120 MHz, PCLKB/C/D at lower ratios).

Peripheral architecture centers on event-driven operation via ELC (183 internal signals), eliminating CPU intervention for timer-triggered ADC starts or PWM dead-time compensation. Safety features include MPU, register write protection, CRCA, oscillation-stop detection, and hardware-assisted RAM self-test - all aligned with IEC60730 Class B requirements.

Key Specifications

Pinout & Package

Package: PLQP0100KB-B - 100-pin Low-profile Quad Flat Package, 14 × 14 mm body, 0.5 mm 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 R5F526TBDDFL#50, the R5F526TADDFL#50 reduces memory and peripheral resources for compact applications, while the R5F566TEADFP#30 extends performance and safety capabilities for complex multi-axis systems - neither is pin-compatible, requiring PCB redesign.

Availability

R5F526TBDDFL#50 is available at Aetrix Electronics and suitable for industrial motor drives, home appliance inverters, automotive auxiliary systems, and PLC I/O modules requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for R5F526TBDDFL#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 specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RX26T Group targets high-efficiency motor control applications, integrating precision PWM, real-time analog acquisition, safety features, and communication interfaces into a single chip for inverter and drive systems.

FAQ

What is the maximum operating frequency and CoreMark score of the R5F526TBDDFL#50?

The R5F526TBDDFL#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 - enabling deterministic real-time response in motor control loops. The R5F526TBDDFL#50 sustains full performance across its voltage range (2.7–5.5 V) without wait states.

Does the R5F526TBDDFL#50 support IEC60730 Class B compliance out of the box?

Yes, the R5F526TBDDFL#50 includes hardware features required for IEC60730 Class B: oscillation-stop detection, ADC self-diagnostic and disconnection detection, clock frequency accuracy measurement, independent watchdog timer (IWDTa), RAM test-assisting function via DOC, CRCA, and register write protection. These are implemented in silicon and documented in the R01DS0407EJ0120 datasheet - no external components needed to meet baseline safety requirements.

What package type and pin count does the R5F526TBDDFL#50 use?

The R5F526TBDDFL#50 uses a 100-pin LFQFP package designated PLQP0100KB-B: 14 × 14 mm body size, 0.5 mm pitch, with exposed thermal pad for enhanced heat dissipation. It provides 82 general-purpose I/O pins (including 2 with 5-V tolerance), 16 external interrupt inputs, and dedicated signal routing for motor control peripherals like MTU3d and GPTWa.

How many A/D converter channels does the R5F526TBDDFL#50 support, and what is their sampling capability?

The R5F526TBDDFL#50 supports 22 total 12-bit A/D converter channels across three S12ADH units: Unit 0 (4 channels), Unit 1 (4 channels), and Unit 2 (14 channels). All units feature channel-dedicated sample-and-hold circuits, enabling true simultaneous sampling - critical for accurate current/voltage vector acquisition in FOC algorithms. Minimum conversion time is 0.9 µs per channel at 60 MHz ADCLK.

What is the role of the Event Link Controller (ELC) in the R5F526TBDDFL#50?

The Event Link Controller (ELC) in the R5F526TBDDFL#50 enables direct hardware interconnection between 183 internal peripheral events - such as MTU compare-match, GPTW overflow, or ADC end-of-conversion - without CPU intervention or interrupt latency. For example, an MTU3d timer event can directly trigger ADC conversion start or disable PWM outputs upon fault detection, ensuring deterministic sub-microsecond response in safety-critical motor control sequences. The R5F526TBDDFL#50 leverages ELC to offload timing-critical tasks from firmware.