Renesas R5F526TBCGFM#30

Overview

R5F526TBCGFM#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 PWM generation with dead-time control.

For engineers reviewing the R5F526TBCGFM#30 datasheet, R5F526TBCGFM#30 pinout, R5F526TBCGFM#30 application, or R5F526TBCGFM#30 equivalent, key selection criteria include real-time PWM resolution (260 ps), simultaneous sampling across three 12-bit ADC units, IEC60730 safety support, Trusted Secure IP Lite encryption, and 100-pin LFQFP package compatibility with 82 general-purpose I/O pins.

Technical Context

The R5F526TBCGFM#30 implements the RXv3 CPU core with single-cycle instruction execution, IEEE 754-compliant single-precision FPU, and 16-register bank save for fast context switching-enabling deterministic response in motor control loops. Its clock system supports PLL-synthesized 120 MHz ICLK while independently configuring PCLKA (120 MHz), PCLKB (60 MHz), PCLKC (120 MHz), and PCLKD (60 MHz) for peripheral timing isolation.

Hardware acceleration includes GPTWa (8-channel 32-bit timer) with complementary PWM output, MTU3d (9-channel 16-bit timer) for 3-phase inverter control, HRPWM (4-channel) delivering 260 ps timing resolution, and ELC-driven event chaining to trigger ADC conversions, PWM updates, and comparator actions without CPU intervention-critical for synchronized sensor-to-actuator latency under 1 µs.

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 R5F526TBCGFM#30, the R5F526TADGFM#30 offers identical motor control peripherals in a lower-density memory variant, while the R5F566TEBGFM#30 trades HRPWM precision and on-chip encryption for greater raw processing headroom-making the R5F526TBCGFM#30 optimal for safety-certified, high-fidelity inverter designs where timing fidelity and embedded security are non-negotiable.

Availability

R5F526TBCGFM#30 is available at Aetrix Electronics and suitable for industrial motor drives, automotive HVAC systems, home appliance inverters, and renewable energy converters requiring stable component supply, long-term lifecycle support, and full traceability.

Supply support for R5F526TBCGFM#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 Corporation is a global semiconductor leader headquartered in Tokyo, Japan, specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and IoT markets.

The RX26T Group-including R5F526TBCGFM#30-is designed specifically for high-performance, safety-compliant motor control in inverters, focusing on real-time PWM accuracy, integrated analog sensing, and functional safety certification readiness.

FAQ

What is the maximum operating frequency and CoreMark score of the R5F526TBCGFM#30?

The R5F526TBCGFM#30 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 execution of motor control algorithms such as field-oriented control (FOC) and space-vector modulation within tight timing windows. The R5F526TBCGFM#30 sustains this speed across its full 512 KB flash and 64 KB SRAM without wait states.

Does the R5F526TBCGFM#30 support IEC60730 Class B compliance out of the box?

Yes, the R5F526TBCGFM#30 integrates multiple hardware features required for IEC60730 Class B compliance, including oscillation-stoppage detection, RAM test-assisting function via DOC, CRC calculator (CRCA), register write protection, independent watchdog timer with dedicated 120 kHz oscillator, and self-diagnostic A/D converter disconnection detection. These capabilities are documented in the R01DS0407EJ0120 datasheet and enable certified safety firmware implementation without external components. The R5F526TBCGFM#30 is explicitly targeted for Class B applications per Renesas' functional safety documentation.

What PWM resolution does the R5F526TBCGFM#30 achieve, and how is it implemented?

The R5F526TBCGFM#30 achieves a minimum PWM timing resolution of 260 ps using its dedicated High-Resolution PWM (HRPWM) circuit, which controls rising/falling edges of waveforms generated by GPTWa channels 0–3. This resolution is realized at 120 MHz operation and enables precise dead-time adjustment for SiC and GaN power stages-critical for minimizing shoot-through risk and optimizing efficiency. Unlike software-based fine-tuning, HRPWM operates independently of CPU load, ensuring consistent jitter-free edge placement across all operating conditions. The R5F526TBCGFM#30 delivers this capability natively without external timing ICs.

How many ADC channels does the R5F526TBCGFM#30 support, and what sampling architecture is used?

The R5F526TBCGFM#30 supports 22 total 12-bit ADC input channels distributed across three independent S12ADH units: Unit 0 (4 channels), Unit 1 (4 channels), and Unit 2 (14 channels). It implements simultaneous sampling across all three units-enabling concurrent acquisition of phase currents, DC-link voltage, and temperature in a single control cycle. Each unit includes dedicated sample-and-hold circuits (3 per unit for Units 0 and 1), and sampling time is configurable per channel. This architecture directly supports field-oriented control (FOC) with minimal latency, and the R5F526TBCGFM#30 uses ADCLK derived from PCLKD (up to 60 MHz) for 0.9 µs minimum conversion time per channel.

Is the R5F526TBCGFM#30 pin-compatible with other RX26T group MCUs?

Yes, the R5F526TBCGFM#30 is pin-compatible with other 100-pin LFQFP variants in the RX26T Group, including R5F526TADGFM#30 and R5F526TBDGFM#30, sharing identical PLQP0100KB-B package dimensions, pinout, and electrical characteristics. All share the same 82 general-purpose I/O pins with 5-V tolerance, open-drain capability, and large-current drive options. This allows drop-in replacement for memory- or feature-tier upgrades-e.g., moving from 256 KB to 512 KB flash-without PCB redesign. The R5F526TBCGFM#30 maintains full functional and mechanical compatibility across the 100-pin RX26T lineup.