Renesas R5F526TBDDND#50

Overview

R5F526TBDDND#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 hardware-accelerated 3-phase/5-phase complementary PWM generation with dead-time control.

For engineers reviewing the R5F526TBDDND#50 datasheet, R5F526TBDDND#50 pinout, R5F526TBDDND#50 application, or R5F526TBDDND#50 equivalent, this MCU delivers deterministic real-time motor timing (260 ps HRPWM resolution), IEC60730-compliant safety features including oscillation-stop detection and RAM self-test, and dual-bank flash for safe firmware updates in field-deployed drives.

Technical Context

The R5F526TBDDND#50 implements the RXv3 CPU core with single-cycle instruction execution at 120 MHz, supporting IEEE 754-compliant single-precision FPU and 113 instructions including DSP extensions. Its memory protection unit (MPU) enforces eight configurable regions with 16-byte granularity to isolate critical control code from application tasks.

Timing subsystems include three independent clock domains: ICLK (up to 120 MHz for CPU), PCLKA (up to 120 MHz for MTU3d/GPTWa/HRPWM), and PCLKD (up to 60 MHz for S12ADH). The ELC enables 183 internal event signals to trigger peripheral actions-including PWM start/stop and ADC conversion-without CPU intervention, reducing latency in closed-loop motor control.

Key Specifications

Pinout & Package

PLQP0100KB-B is a 100-pin low-profile quad flat package (LFQFP) with 0.5 mm pitch, 14 × 14 mm body size, and operating temperature range of –40°C to +85°C. It supports 82 general-purpose I/O pins (including 2× 5-V tolerant inputs), 15 high-drive outputs, and dedicated signal routing for motor control peripherals.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F526TBDDND#50, the R5F526TADDFP#50 offers identical peripheral sets except for reduced memory and missing HRPWM-making it suitable for cost-sensitive, lower-performance inverters-while the R5F566TEBDFP#50 delivers significantly higher processing throughput and memory capacity for complex motion control algorithms, albeit at increased power and cost.

Availability

R5F526TBDDND#50 is available at Aetrix Electronics and suitable for industrial motor drives, home appliance inverters, automotive auxiliary systems, and industrial PLC I/O modules requiring stable component supply, long-term lifecycle support, and traceable sourcing for safety-critical deployments.

Supply support for R5F526TBDDND#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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, and power devices for industrial, automotive, and IoT markets.

The RX26T Group is designed specifically for high-efficiency motor control in inverters and drives, integrating precision PWM, fast ADCs, and functional safety features to replace discrete timing and protection circuits.

FAQ

What is the maximum operating frequency and CoreMark score of the R5F526TBDDND#50?

The R5F526TBDDND#50 operates at a maximum frequency of 120 MHz and achieves 709 CoreMark in benchmark testing. This performance stems from its RXv3 CPU core with single-cycle instruction execution, on-chip 32-bit multiplier/divider, and barrel shifter-all verified in the official R01DS0407EJ0120 Rev.1.20 datasheet. The R5F526TBDDND#50 maintains deterministic real-time behavior essential for motor control loops.

Does the R5F526TBDDND#50 support CAN FD, and what standard does it comply with?

Yes, the R5F526TBDDND#50 integrates a CAN FD module compliant with ISO 11898-1:2015, supporting both standard and extended frames. It enables data rates up to 5 Mbps in FD mode and includes hardware message filtering and FIFO buffering. This capability is documented in Section 1.1 of the R01DS0407EJ0120 datasheet and is implemented in silicon for the PLQP0100KB-B package variant of the R5F526TBDDND#50.

What PWM resolution does the R5F526TBDDND#50 achieve, and how is it realized?

The R5F526TBDDND#50 achieves a minimum PWM timing resolution of 260 ps using its dedicated High-Resolution PWM (HRPWM) circuit, which fine-tunes the edge timing of outputs from the 32-bit GPTWa timers. This resolution is attainable only when operating at 120 MHz and is confirmed in the "High-resolution PWM waveform generation circuit" section of the R01DS0407EJ0120 datasheet. The R5F526TBDDND#50 uses this capability for precise dead-time control in 3-phase inverter gate drivers.

How does the R5F526TBDDND#50 support IEC60730 Class B compliance?

The R5F526TBDDND#50 includes multiple hardware features for IEC60730 Class B compliance: oscillation-stop detection for main clock, self-diagnostic functions for ADC and comparator, RAM test assistance via DOC, CRC calculator (CRCA), register write protection, and independent watchdog timer (IWDTa) with dedicated oscillator. These are explicitly listed under "Useful functions for IEC60730 compliance" in the R01DS0407EJ0120 datasheet and apply directly to the R5F526TBDDND#50 device.

What package type and pin count does the R5F526TBDDND#50 use?

The R5F526TBDDND#50 uses the PLQP0100KB-B package: a 100-pin low-profile quad flat package (LFQFP) with 14 × 14 mm body size, 0.5 mm pitch, and operating temperature range of –40°C to +85°C. This package supports 82 general-purpose I/O pins, two 5-V tolerant inputs, and dedicated signal routing for motor control peripherals-as specified in Table 1.2 of the R01DS0407EJ0120 datasheet for the RX26T Group.