Renesas R5F526TBBGFN#50

Overview

R5F526TBBGFN#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 flash memory, 64 KB SRAM, 16 KB data flash, integrated CAN FD interface, and hardware-accelerated 3-phase/5-phase complementary PWM generation with 260 ps HRPWM timing resolution.

For engineers reviewing the R5F526TBBGFN#50 datasheet, R5F526TBBGFN#50 pinout, R5F526TBBGFN#50 application, or R5F526TBBGFN#50 equivalent, key selection considerations include its 100-pin LQFP package, dual-bank flash architecture enabling background programming, IEC60730-compliant safety features (IWDT, oscillation-stop detection, RAM test assist), and dedicated motor control peripherals including MTU3d, GPTWa, and HRPWM.

Technical Context

The R5F526TBBGFN#50 implements the RXv3 CPU core with single-cycle instruction execution at 120 MHz, supporting 113 instructions and IEEE 754-compliant single-precision FPU. Its clock system integrates PLL, 240-kHz LOCO, and 16–20 MHz HOCO sources, with independent PCLKA (120 MHz), PCLKB (60 MHz), PCLKC (120 MHz), and PCLKD (60 MHz) domains for peripheral timing.

Motor control execution relies on tightly coupled timer subsystems: MTU3d (9-channel 16-bit) and GPTWa (8-channel 32-bit) provide synchronized PWM output with dead-time insertion, while HRPWM refines edge placement to ±260 ps. The S12ADH ADC supports simultaneous sampling across three units (4+4+14 channels) with programmable gain amplifiers and analog input disconnection detection for functional safety compliance.

Key Specifications

Pinout & Package

Package: PLQP0100KB-B - 100-pin LQFP, 14 × 14 mm body, 0.5 mm pitch, –40°C to +105°C operating range (G-version).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F526TBBGFN#50, R5F526TADDFP#50 offers reduced footprint and cost at the expense of motor control scalability, while R5F526TBBGFN#50 delivers optimal balance of integration, safety, and performance for mainstream industrial inverters-making it the preferred choice for production-grade 3-phase motor control where 100-pin packaging is acceptable.

Availability

R5F526TBBGFN#50 is available at Aetrix Electronics and suitable for industrial motor drives, home appliance inverters, automotive auxiliary systems, and PLC I/O modules requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for R5F526TBBGFN#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, and power management solutions for industrial, automotive, and IoT markets.

The RX26T Group is designed specifically for high-efficiency motor control in industrial and consumer inverters, integrating hardware-accelerated PWM, safety-certified peripherals, and real-time processing capabilities to replace discrete analog/motor control IC combinations.

FAQ

What is the maximum operating frequency and CPU architecture of the R5F526TBBGFN#50?

The R5F526TBBGFN#50 operates at a maximum frequency of 120 MHz using the 32-bit RXv3 CPU core. It delivers 709 CoreMark performance and supports single-cycle instruction execution, IEEE 754-compliant single-precision floating-point operations, and a 113-instruction set optimized for motor control algorithms. This architecture enables deterministic execution of field-oriented control (FOC) loops within tight timing budgets.

Does the R5F526TBBGFN#50 support CAN FD, and what standard does it comply with?

Yes, the R5F526TBBGFN#50 integrates a CAN FD module compliant with ISO 11898-1:2015, supporting both standard and extended frames. It enables high-speed diagnostics and real-time motor status reporting at data rates up to 5 Mbps in the FD phase, while maintaining backward compatibility with classical CAN networks-critical for industrial automation and automotive auxiliary systems.

What PWM capabilities does the R5F526TBBGFN#50 offer for motor control applications?

The R5F526TBBGFN#50 provides comprehensive motor control PWM: MTU3d supports 3-phase complementary outputs with automatic dead-time insertion, GPTWa delivers 10 single-phase, 3 three-phase, or 2 five-phase complementary PWM channels, and HRPWM refines edge timing to ±260 ps resolution. These features enable precise gate driving for SiC/GaN inverters and support advanced modulation schemes like space-vector PWM without CPU intervention.

How does the R5F526TBBGFN#50 meet IEC60730 safety requirements for household appliances?

The R5F526TBBGFN#50 includes multiple IEC60730-compliant features: an independent watchdog timer (IWDT) with dedicated 120 kHz oscillator, oscillation-stop detection, RAM test-assisting function via DOC, CRC calculator (CRCA), register write protection, and self-diagnostic A/D converter functions. These allow developers to satisfy Class B software safety requirements without external safety monitors, reducing system complexity and certification effort.

What package type and temperature grade is the R5F526TBBGFN#50 supplied in?

The R5F526TBBGFN#50 is supplied in the PLQP0100KB-B package: a 100-pin LQFP with 14 × 14 mm body size and 0.5 mm pitch. It is rated for the G-version industrial temperature range of –40°C to +105°C, making it suitable for demanding environments such as motor drive enclosures and automotive under-hood auxiliary systems.