Renesas R5F526TBBGFM#50

Overview

R5F526TBBGFM#50 from Renesas is a 32-bit RXv3 microcontroller optimized for motor control, featuring 120 MHz operation, 512 KB on-chip code flash, 64 KB SRAM, 16 KB data flash, and integrated high-resolution PWM (260 ps min. resolution) with 3-phase/5-phase complementary output capability. It integrates CAN FD, dual 12-bit ADC units with simultaneous sampling, 6-channel analog comparators, and hardware encryption (AES-128/256) - deployed in industrial inverters and servo drives.

For engineers reviewing the R5F526TBBGFM#50 datasheet, R5F526TBBGFM#50 pinout, R5F526TBBGFM#50 application, or R5F526TBBGFM#50 equivalent, key selection criteria include its 100-pin LFQFP package, GPTWa timer architecture supporting 10-channel single-phase complementary PWM, HRPWM timing precision at 120 MHz, and IEC60730 safety features including oscillation-stop detection and RAM test assistance.

Technical Context

The R5F526TBBGFM#50 implements the RXv3 CPU core with 113 instructions, single-precision FPU compliant with IEEE754, and collective register bank save for fast context switching. Its clock system supports 8–24 MHz external crystal input to PLL, internal HOCO (16/18/20 MHz), and dedicated 120 kHz IWDT oscillator - enabling deterministic real-time motor control loops.

Peripheral synchronization uses four independent clock domains: ICLK (up to 120 MHz for CPU), PCLKA (120 MHz for MTU/GPTW/HRPWM), PCLKB (60 MHz for most peripherals), and PCLKD (60 MHz for S12ADH). The ELC enables event-driven inter-module coordination without CPU intervention - critical for synchronized PWM, ADC triggering, and fault response in inverter gate drivers.

Key Specifications

Pinout & Package

Package: PLQP0100KB-B - 100-pin Low-profile Quad Flat Package, 14 × 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 R5F526TBBGFM#50, the R5F526TADGFM#50 offers footprint reduction at the expense of HRPWM and simultaneous 3-unit ADC capability, while the R5F566TEBGFM#50 provides scalable headroom for functional safety expansion but requires PCB redesign and toolchain migration.

Availability

R5F526TBBGFM#50 is available at Aetrix Electronics and suitable for industrial motor drives, automotive EPS modules, and home appliance control systems requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for R5F526TBBGFM#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 industrial, automotive, and infrastructure markets.

The RX26T Group - including the R5F526TBBGFM#50 - was designed specifically for high-precision motor control applications, integrating high-resolution PWM, simultaneous multi-channel ADC, and IEC60730 safety features into a single 100-pin MCU platform.

FAQ

What is the maximum operating frequency and CoreMark score of the R5F526TBBGFM#50?

The R5F526TBBGFM#50 operates at a maximum frequency of 120 MHz and achieves 709 CoreMark under benchmark conditions. This performance stems from the RXv3 CPU core's efficient instruction pipeline, zero-wait-state 512 KB flash access, and integrated single-precision FPU - enabling real-time execution of complex motor control algorithms such as field-oriented control and predictive current regulation within tight timing budgets.

Does the R5F526TBBGFM#50 support CAN FD, and what standard does it comply with?

Yes, the R5F526TBBGFM#50 integrates a CAN FD module compliant with ISO11898-1:2015, supporting both standard and extended frames. It enables high-speed diagnostics and control messaging up to 5 Mbps in the data phase - essential for automotive EPS systems and industrial drive commissioning over CAN networks. The module includes message buffering, error handling, and flexible filtering to reduce host CPU overhead.

How many ADC channels does the R5F526TBBGFM#50 support, and are they capable of simultaneous sampling?

The R5F526TBBGFM#50 supports three independent 12-bit S12ADH units: two with 4 channels each (units 0 and 1) and one with 14 channels (unit 2), totaling 22 channels. All three units support hardware-synchronized sampling triggered by a single event (e.g., MTU overflow or ELC signal), enabling true simultaneous acquisition of phase currents, DC-link voltage, and temperature - critical for accurate field-oriented control in inverters.

What is the resolution and application of the HRPWM feature in the R5F526TBBGFM#50?

The R5F526TBBGFM#50 includes a High-Resolution PWM (HRPWM) circuit delivering a minimum timing resolution of 260 ps when operating at 120 MHz. This allows precise dead-time adjustment down to sub-nanosecond levels - directly supporting SiC and GaN power stages where narrow, consistent dead times prevent shoot-through while maximizing efficiency in high-frequency inverter topologies.

Is the R5F526TBBGFM#50 qualified for IEC60730 Class B compliance, and which built-in features support this?

Yes, the R5F526TBBGFM#50 includes multiple hardware features targeting IEC60730 Class B compliance: main clock oscillation stop detection, RAM test assistance via DOC, CRC calculator (CRCA) for memory/data integrity, register write protection, and analog self-test functions (A/D disconnection detection, comparator diagnostics). These reduce external component count and simplify functional safety certification for motor control appliances and industrial equipment.