Renesas R5F526TFDDND#50

Overview

R5F526TFDDND#50 from Renesas is a 32-bit RXv3 microcontroller optimized for motor control and industrial inverter applications, featuring a 120 MHz CPU core delivering 709 CoreMark, 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 260 ps timing resolution.

For engineers reviewing the R5F526TFDDND#50 datasheet, R5F526TFDDND#50 pinout, R5F526TFDDND#50 application, or R5F526TFDDND#50 equivalent, this MCU is selected for high-precision real-time motor control where deterministic PWM timing, analog signal acquisition (12-bit ADC with simultaneous sampling), and functional safety compliance (IEC60730) are critical design requirements.

Technical Context

The R5F526TFDDND#50 implements the RXv3 CPU core with single-cycle instruction execution, IEEE 754-compliant single-precision FPU, and collective register bank save for fast context switching in interrupt-driven motor control loops. Its clock system supports PLL-synthesized 120 MHz ICLK from an external 8–24 MHz crystal or internal HOCO, with independent PCLKA/PCLKC domains enabling concurrent 120 MHz peripheral operation (GPTWa, MTU3d, HRPWM) and 60 MHz ADC timing (ADCLK).

It integrates dedicated motor control peripherals including eight 32-bit GPTWa channels supporting single-/3-/5-phase complementary PWM with programmable dead time, nine-channel 16-bit MTU3d with automatic dead-time compensation, and four-channel HRPWM delivering 260 ps minimum timing resolution for precise gate drive synchronization - all coordinated via the Event Link Controller (ELC) to eliminate CPU intervention during waveform generation and A/D triggering.

Key Specifications

Pinout & Package

Package: PLQP0100KB-B (100-pin LQFP, 14 × 14 mm, 0.5 mm pitch). Pin count and I/O configuration match the 100-pin variant of the RX26T Group, supporting up to 82 general-purpose I/O pins with 5-V tolerance, open-drain capability, and programmable drive strength.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F526TFDDND#50, the R5F526TDDND#50 reduces memory capacity while maintaining identical motor control peripherals and safety features, whereas the R5F566TEBDFP#30 upgrades CPU speed, HRPWM resolution, and CAN FD count at the cost of software migration effort and higher BOM cost.

Availability

R5F526TFDDND#50 is available at Aetrix Electronics and suitable for industrial motor drives, home appliance inverters, automotive auxiliary systems, and PLC motion control modules requiring stable component supply across extended production lifecycles.

Supply support for R5F526TFDDND#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, and power management solutions for industrial, automotive, and IoT applications.

The RX26T Group, including R5F526TFDDND#50, was designed specifically for high-efficiency, safety-compliant motor control in inverters and variable-frequency drives - integrating precision PWM, analog sensing, and functional safety features on a single chip.

FAQ

What is the maximum operating frequency and CoreMark score of the R5F526TFDDND#50?

The R5F526TFDDND#50 operates at a maximum frequency of 120 MHz and achieves 709 CoreMark. This performance level is measured under standard conditions with the RXv3 CPU core executing the CoreMark benchmark at full speed, confirming deterministic real-time capability for complex motor control algorithms such as field-oriented control (FOC) and model predictive control (MPC) without throttling or wait states.

Does the R5F526TFDDND#50 support CAN FD, and what standard does it comply with?

Yes, the R5F526TFDDND#50 integrates a CAN FD module compliant with ISO11898-1:2015, supporting both standard and extended frames. It enables data rates up to 5 Mbps in the FD data phase while maintaining backward compatibility with classical CAN networks - essential for high-bandwidth diagnostics and real-time motor status reporting in industrial and automotive systems.

How many channels of 12-bit ADC does the R5F526TFDDND#50 include, and what is its minimum conversion time?

The R5F526TFDDND#50 includes a total of 22 channels across three 12-bit S12ADH ADC units (Unit 0: 4 channels, Unit 1: 4 channels, Unit 2: 14 channels), with a minimum conversion time of 0.9 µs per channel when ADCLK runs at 60 MHz. This allows simultaneous sampling across multiple units for synchronized current and voltage measurements in three-phase motor control applications.

What PWM resolution does the R5F526TFDDND#50 provide, and which timers support high-resolution mode?

The R5F526TFDDND#50 provides a minimum PWM timing resolution of 260 ps via its four-channel High-Resolution PWM (HRPWM) circuit, which enhances the timing precision of GPTW0 through GPTW3 outputs. This resolution enables sub-nanosecond dead-time control critical for minimizing shoot-through in SiC and GaN-based inverter designs operating above 100 kHz switching frequencies.

Is the R5F526TFDDND#50 qualified for functional safety standards like IEC60730?

Yes, the R5F526TFDDND#50 includes dedicated hardware features for IEC60730 Class B compliance, including oscillation-stop detection, RAM test assist (DOC), CRC calculator (CRCA), register write protection, and self-diagnostic functions for the A/D converter and clock system. These capabilities are documented in Renesas' functional safety manual R01US0407EJ0120 and enable certified implementation in safety-critical motor control applications.