Renesas R5F526TBBDFN#50

Overview

R5F526TBBDFN#50 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#50 datasheet, R5F526TBBDFN#50 pinout, R5F526TBBDFN#50 application, or R5F526TBBDFN#50 equivalent, key selection criteria include its dual-bank flash architecture enabling background programming, IEC60730-compliant safety features (oscillation-stop detection, RAM test assist, CRC), and dedicated high-resolution PWM timing control for precise gate drive synchronization in BLDC/PMSM inverters.

Technical Context

The R5F526TBBDFN#50 implements the RXv3 CPU core with single-cycle instruction execution, 16 general-purpose 32-bit registers, and IEEE 754-compliant single-precision FPU - enabling real-time field-oriented control (FOC) algorithms. Its clock system integrates a PLL with 8–24 MHz external crystal support, internal HOCO (16/18/20 MHz), and dedicated 120 kHz IWDT oscillator for fail-safe operation.

Peripheral integration centers on motor control: GPTWa provides 8× 32-bit PWM channels supporting single-phase (10 outputs), 3-phase (3 outputs), and 5-phase (2 outputs) complementary modes with dead-time insertion; HRPWM delivers 4-channel sub-nanosecond edge placement (260 ps min) synchronized to GPTW outputs; S12ADH includes three 12-bit A/D units (4+4+14 channels) with simultaneous sampling and programmable gain amplifiers for current/voltage sensing.

Key Specifications

Pinout & Package

PWQN0064KF-A is a 64-pin, 9 × 9 mm, 0.5 mm pitch HWQFN package with exposed thermal pad, rated for industrial temperature range (–40°C to +105°C). Pin functions are defined per Renesas R01DS0407EJ0120 Rev.1.20, Table 1.2 (Package Comparison).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F526TBBDFN#50, R5F526TBDFA#50 offers identical functionality in a larger package for scalability, while R5F523T5DDFK#50 trades performance, resolution, and safety features for lower cost and power - making it suitable only for entry-level inverter designs without stringent IEC60730 or SiC/GaN timing demands.

Availability

R5F526TBBDFN#50 is available at Aetrix Electronics and suitable for industrial motor drives, BLDC/PMSM inverters, PLC I/O modules, and renewable energy converters requiring stable component supply, long-term lifecycle support, and traceable sourcing for production programs.

Supply support for R5F526TBBDFN#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, power, and SoC solutions for automotive, industrial, and IoT markets.

The RX26T Group, including R5F526TBBDFN#50, is engineered specifically for high-precision motor control in industrial inverters and appliances - integrating hardware-accelerated PWM, safety-certified peripherals, and real-time processing capabilities.

FAQ

What is the maximum operating frequency and CoreMark score of the R5F526TBBDFN#50?

The R5F526TBBDFN#50 operates at a maximum frequency of 120 MHz and achieves 709 CoreMark performance. This benchmark reflects its RXv3 CPU core efficiency, enabling real-time execution of complex motor control algorithms such as field-oriented control (FOC) and sensorless estimation within tight timing constraints. The R5F526TBBDFN#50 sustains this performance with no-wait access to both 512 KB code flash and 64 KB SRAM.

Does the R5F526TBBDFN#50 support IEC60730 Class B compliance?

Yes, the R5F526TBBDFN#50 includes multiple hardware features required for IEC60730 Class B compliance: oscillation-stop detection, RAM test assist via DOC, CRC calculator (CRCA), register write protection, independent watchdog timer (IWDT) with window function, and self-diagnostic A/D converter functions. These are documented in Renesas R01DS0407EJ0120 Rev.1.20 and enable certified safety firmware implementation without external components. The R5F526TBBDFN#50 is designed for use in safety-critical motor control applications.

What PWM configurations does the R5F526TBBDFN#50 support for motor control?

The R5F526TBBDFN#50 supports single-phase (10 outputs), 3-phase (3 outputs), and 5-phase (2 outputs) complementary PWM modes via its GPTWa module, with automatic dead-time insertion and phase-counting capability. Its HRPWM peripheral adds 4 channels with 260 ps minimum edge placement resolution, synchronized to GPTWa outputs. This enables precise gate timing for SiC/GaN-based inverters where nanosecond-level dead-time control directly impacts efficiency and reliability. The R5F526TBBDFN#50 is optimized for BLDC, PMSM, and ACIM drive topologies.

How many ADC channels and what sampling capability does the R5F526TBBDFN#50 provide?

The R5F526TBBDFN#50 integrates the S12ADH 12-bit A/D converter with three independent sample-and-hold units: Unit 0 (4 channels), Unit 1 (4 channels), and Unit 2 (14 channels), totaling 22 configurable inputs. It supports simultaneous sampling across all units, with minimum conversion time of 0.9 µs per channel at 60 MHz ADCLK. Triggers can be sourced from MTU, GPTW, or ELC events to align sampling precisely with PWM waveforms. This capability is essential for accurate current reconstruction in high-performance motor control. The R5F526TBBDFN#50 delivers deterministic analog acquisition critical for closed-loop stability.

What package type and thermal rating does the R5F526TBBDFN#50 use?

The R5F526TBBDFN#50 uses the PWQN0064KF-A package: a 64-pin HWQFN measuring 9 × 9 mm with 0.5 mm pitch and an exposed thermal pad. It is rated for industrial temperature operation from –40°C to +105°C (G-version), making it suitable for deployment in thermally demanding environments such as motor drive enclosures and power converters. The package supports reflow soldering and provides efficient thermal dissipation for sustained 120 MHz operation. The R5F526TBBDFN#50's compact footprint enables high-density PCB layouts in space-constrained industrial designs.