Renesas R5F526TBBDFP#50

Overview

R5F526TBBDFP#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 memory with dual-bank capability, 64 KB SRAM, 16 KB data flash (100,000 write cycles), integrated CAN FD interface (ISO 11898-1:2015), and hardware-accelerated 3-phase complementary PWM generation for IGBT/MOSFET gate driving.

For engineers reviewing the R5F526TBBDFP#50 datasheet, R5F526TBBDFP#50 pinout, R5F526TBBDFP#50 application, or R5F526TBBDFP#50 equivalent, key selection considerations include its 100-pin LFQFP package with 82 general-purpose I/Os (2 × 5-V tolerant), 260 ps high-resolution PWM timing resolution, simultaneous sampling across three 12-bit A/D converter units, and Trusted Secure IP Lite encryption support for IEC 60730 Class B compliance.

Technical Context

The R5F526TBBDFP#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-enabling deterministic real-time motor control loops. Its clock system integrates an 8–24 MHz external crystal oscillator, internal 240 kHz LOCO and selectable 16/18/20 MHz HOCO, and PLL for stable 120 MHz operation with independent peripheral clock domains (PCLKA up to 120 MHz, PCLKB up to 60 MHz).

Peripheral architecture centers on event-driven operation via the Event Link Controller (ELC), which interconnects 183 internal signals-including MTU3d timer outputs, GPTWa PWM triggers, and A/D conversion starts-without CPU intervention. This enables synchronized, low-latency control of 3-phase inverters using MTU3d's complementary PWM mode with automatic dead-time insertion and POE3D short-circuit protection.

Key Specifications

Pinout & Package

Package: PLQP0100KB-B - 100-pin Low-profile Quad Flat Package, 14 mm × 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 R5F526TBBDFP#50, the R5F526TADFP#50 reduces memory and analog resources for cost-sensitive applications, while the R5F566TEBDFP#50 extends processing headroom and connectivity for scalable industrial platforms-both retain pin-compatible footprint but differ in PWM precision, A/D channel count, and safety feature depth.

Availability

R5F526TBBDFP#50 is available at Aetrix Electronics and suitable for industrial motor drives, home appliance inverters, and renewable energy converters requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for safety-critical production.

Supply support for R5F526TBBDFP#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 management, and SoC solutions for automotive, industrial, and IoT markets.

The RX26T Group is designed specifically for high-efficiency motor control in industrial and consumer inverters, integrating hardware-accelerated PWM, simultaneous sampling A/D, and IEC 60730-compliant safety features into a single chip.

FAQ

What is the maximum operating frequency and CoreMark score of the R5F526TBBDFP#50?

The R5F526TBBDFP#50 operates at a maximum frequency of 120 MHz and achieves 709 CoreMark in benchmark testing. This performance level enables real-time execution of complex field-oriented control (FOC) algorithms with sub-microsecond loop times. The RXv3 CPU core delivers single-cycle instruction execution and includes a single-precision floating-point unit compliant with IEEE 754, making the R5F526TBBDFP#50 suitable for computationally intensive motor control tasks without external co-processors.

Does the R5F526TBBDFP#50 support CAN FD, and what standard does it comply with?

Yes, the R5F526TBBDFP#50 integrates a CAN FD module compliant with ISO 11898-1:2015, supporting both standard and extended frame formats. It enables data rates up to 5 Mbps in FD mode for high-bandwidth diagnostics and firmware updates in industrial networks. The CAN FD interface is implemented as a dedicated peripheral with message RAM and filtering logic, allowing concurrent operation with motor control functions without CPU intervention-critical for time-deterministic systems using the R5F526TBBDFP#50.

What PWM resolution and complementary output capabilities does the R5F526TBBDFP#50 provide?

The R5F526TBBDFP#50 delivers 260 ps minimum timing resolution via its High-Resolution PWM (HRPWM) circuit applied to GPTWa outputs, enabling precise dead-time control for SiC/GaN gate drivers. It supports 3-phase complementary PWM with automatic dead-time insertion using MTU3d, plus 5-phase and single-phase modes across 10 total output channels. These features are hardware-accelerated and managed by POE3D for short-circuit protection-making the R5F526TBBDFP#50 ideal for high-efficiency inverter designs requiring nanosecond-level timing fidelity.

How many A/D converter channels and sample-and-hold units does the R5F526TBBDFP#50 include?

The R5F526TBBDFP#50 includes three independent 12-bit A/D converter units: Unit 0 (4 channels), Unit 1 (4 channels), and Unit 2 (14 channels), totaling 22 channels. Units 0 and 1 each integrate three dedicated sample-and-hold circuits for simultaneous sampling across multiple analog inputs-essential for capturing synchronized current/voltage feedback in 3-phase motor control. This architecture allows the R5F526TBBDFP#50 to perform true simultaneous sampling across all three phases without multiplexing delay, ensuring accurate field-oriented control calculations.

Is the R5F526TBBDFP#50 qualified for IEC 60730 Class B safety compliance?

Yes, the R5F526TBBDFP#50 includes multiple hardware features certified for IEC 60730 Class B compliance, including oscillation-stoppage detection, RAM test-assisting function via DOC, CRC calculator (CRCA), independent watchdog timer (IWDTa) with window function, and register write protection. These are complemented by software libraries and documentation from Renesas to streamline safety certification. When used with appropriate external components and layout practices, the R5F526TBBDFP#50 enables full Class B compliance for motor control applications-reducing development time for UL/EN60730-certified products.