Renesas R5F526TBBDFN#30

Overview

R5F526TBBDFN#30 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 hardware-accelerated 3-phase/5-phase complementary PWM generation with 260 ps timing resolution.

For engineers reviewing the R5F526TBBDFN#30 datasheet, R5F526TBBDFN#30 pinout, R5F526TBBDFN#30 application, or R5F526TBBDFN#30 equivalent, this MCU delivers deterministic real-time control for brushless DC and permanent magnet synchronous motor drives, with IEC60730-compliant safety features, on-chip FPU, and dual-bank flash for safe firmware updates.

Technical Context

The R5F526TBBDFN#30 implements the RXv3 CPU core with single-cycle instruction execution at 120 MHz, supporting 113 instructions including DSP and floating-point operations, and integrates a memory protection unit (MPU) and Trusted Memory (TM) for secure code execution. It uses PCLKA (up to 120 MHz) for high-speed peripherals like GPTWa and MTU3d, while PCLKC (up to 120 MHz) synchronizes HRPWM and timer counter references.

Its motor control architecture combines three independent 12-bit A/D converter units (S12ADH), six analog comparators (CMPCa), two 12-bit D/A channels, and dedicated hardware blocks - GPTWa (8-channel 32-bit), MTU3d (9-channel 16-bit), and HRPWM (4-channel) - enabling simultaneous sampling, dead-time compensation, and sub-nanosecond PWM edge placement without CPU intervention.

Key Specifications

Pinout & Package

Package: PWQN0064KF-A, 64-pin HWQFN, 9 × 9 mm, 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 R5F526TBBDFN#30, the LQFP variant offers simpler assembly but reduced thermal dissipation, while the QFP variant maintains identical electrical performance with legacy-compatible packaging - both require PCB layout revision but preserve firmware and peripheral configuration.

Availability

R5F526TBBDFN#30 is available at Aetrix Electronics and suitable for industrial motor drives, home appliance inverters, PLC I/O modules, and EV onboard charger designs requiring stable component supply, long-term lifecycle support, and automotive-grade reliability.

Supply support for R5F526TBBDFN#30 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 is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The RX26T Group - including R5F526TBBDFN#30 - was designed specifically for high-efficiency, safety-certifiable motor control in industrial inverters and white goods, integrating hardware acceleration for FOC, real-time safety monitoring, and multi-protocol connectivity.

FAQ

What is the maximum operating frequency and CoreMark score of the R5F526TBBDFN#30?

The R5F526TBBDFN#30 operates at a maximum frequency of 120 MHz and achieves 709 CoreMark in benchmark testing. This performance level enables real-time execution of complex motor control algorithms such as field-oriented control (FOC) and model predictive control (MPC) within tight timing constraints. The R5F526TBBDFN#30 leverages the RXv3 CPU core's single-cycle instruction execution and integrated FPU to deliver deterministic computational throughput essential for high-precision inverter applications.

Does the R5F526TBBDFN#30 support IEC60730 Class B compliance out of the box?

Yes, the R5F526TBBDFN#30 includes built-in hardware features required for IEC60730 Class B compliance, including oscillation-stop detection, RAM test assist (DOC), CRC calculator (CRCA), register write protection, and independent watchdog timer (IWDT) with window function. These capabilities reduce external component count and simplify certification efforts for industrial motor drives. The R5F526TBBDFN#30 datasheet documents each feature's implementation and usage guidelines for functional safety validation.

What PWM resolution and channel count does the R5F526TBBDFN#30 provide for motor control?

The R5F526TBBDFN#30 provides three complementary PWM subsystems: GPTWa (8×32-bit channels), MTU3d (9×16-bit channels), and HRPWM (4 channels with 260 ps minimum edge resolution). This enables simultaneous 3-phase, 5-phase, or single-phase complementary PWM generation with hardware-dead-time insertion and sub-nanosecond timing precision. The R5F526TBBDFN#30 uses PCLKC-synchronized HRPWM to achieve 260 ps resolution at 120 MHz - critical for minimizing shoot-through in SiC/GaN inverter stages.

How many A/D converter channels and units does the R5F526TBBDFN#30 include?

The R5F526TBBDFN#30 includes three independent 12-bit A/D converter units (S12ADH): Unit 0 (4 channels), Unit 1 (4 channels), and Unit 2 (14 channels), totaling 22 configurable analog inputs. Each unit supports simultaneous sampling, programmable sample-and-hold, and conversion times as low as 0.9 µs at 60 MHz ADCLK. The R5F526TBBDFN#30 uses these units to concurrently acquire phase currents, DC-link voltage, and temperature sensor data - essential for high-fidelity motor control loops.

What communication interfaces are integrated into the R5F526TBBDFN#30?

The R5F526TBBDFN#30 integrates CAN FD (ISO11898-1:2015 compliant), 4× SCI, 3× RSCI (with LIN/Manchester), 1× I2C (RIICa, 400 kbps), 1× I3C (RI3C, SDR mode), and 2× SPI (RSPId and RSPIA, up to 30 Mbps). These interfaces support multi-protocol system integration - e.g., CAN FD for motor status reporting, RIIC for temperature/hall sensors, and RSCI for legacy LIN bus communication. The R5F526TBBDFN#30 uses Event Link Controller (ELC) to synchronize interface events with timer and ADC operations without CPU overhead.