Renesas R5F526TBCDFN#30

Overview

R5F526TBCDFN#30 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, 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 R5F526TBCDFN#30 datasheet, R5F526TBCDFN#30 pinout, R5F526TBCDFN#30 application, or R5F526TBCDFN#30 equivalent, key selection considerations include its 100-pin LFQFP package, dual-bank flash architecture enabling background programming, 260 ps high-resolution PWM timing resolution, IEC60730 safety support, and Trusted Secure IP Lite encryption engine.

Technical Context

The R5F526TBCDFN#30 implements the RXv3 CPU core with single-cycle instruction execution, 16 general-purpose 32-bit registers, and IEEE 754-compliant single-precision FPU. It supports little-endian or big-endian data arrangement and includes a collective register bank save function for fast context switching in 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 a PLL synthesizer enabling 120 MHz system clock operation. Peripheral clocks are independently configurable: PCLKA (up to 120 MHz) for MTU3d/GPTWa/HRPWM/CAN FD, PCLKB (up to 60 MHz) for SCI/RSCI/RIIC/RI3C, and PCLKD (up to 60 MHz) for S12ADH ADC.

Key Specifications

Pinout & Package

R5F526TBCDFN#30 is housed in a 100-pin LFQFP package (PLQP0100KB-B), measuring 14 × 14 mm with 0.5 mm pitch, rated for –40°C to +85°C operation (D-version), and featuring 82 general-purpose I/O pins with 5-V tolerance, open-drain capability, and programmable pull-up resistors.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F526TBCDFN#30, R5F526TADFN#30 reduces memory and I/O count for compact designs, while R5F566TEBDFN#30 extends performance for advanced servo control - both require PCB layout changes due to different packages and pinouts.

Availability

R5F526TBCDFN#30 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 R5F526TBCDFN#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 specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and IoT markets.

The RX26T Group is designed specifically for high-efficiency motor control in inverters and industrial drives, integrating precision PWM, safety features, and real-time processing to replace discrete analog/motor control IC combinations.

FAQ

What is the maximum operating frequency and CoreMark score of the R5F526TBCDFN#30?

The R5F526TBCDFN#30 operates at a maximum frequency of 120 MHz and achieves 709 CoreMark in benchmark testing. This performance level enables deterministic execution of complex motor control algorithms such as field-oriented control (FOC) and model predictive control (MPC) within tight timing constraints. The R5F526TBCDFN#30's RXv3 core delivers single-cycle instruction execution and integrated FPU support for efficient floating-point math required in real-time control loops.

Does the R5F526TBCDFN#30 support IEC60730 Class B compliance out of the box?

Yes, the R5F526TBCDFN#30 includes hardware features essential for IEC60730 Class B certification: oscillation-stop detection, RAM test assistance via DOC, CRC calculator (CRCA), register write protection, and independent watchdog timer (IWDTa) with window function. These capabilities reduce software implementation burden and enable systematic self-test coverage exceeding 90% for critical failure modes. The R5F526TBCDFN#30 datasheet documents all required safety mechanisms for integration into certified appliance designs.

What package type and pin count does the R5F526TBCDFN#30 use?

The R5F526TBCDFN#30 uses a 100-pin LFQFP package (PLQP0100KB-B), measuring 14 × 14 mm with 0.5 mm pitch, and supports the D-version temperature range of –40°C to +85°C. It provides 82 general-purpose I/O pins with 5-V tolerance, open-drain capability, and programmable pull-up resistors. This package enables high I/O density for motor control applications requiring multiple PWM outputs, ADC inputs, and communication interfaces without requiring ball-grid array complexity.

How does the HRPWM feature of the R5F526TBCDFN#30 improve inverter efficiency?

The R5F526TBCDFN#30's High-Resolution PWM (HRPWM) circuit achieves a minimum timing resolution of 260 ps on GPTW0–GPTW3 outputs, allowing precise dead-time adjustment for SiC and GaN power devices. This eliminates shoot-through risk while minimizing conduction losses, improving inverter efficiency by up to 12% compared to standard 1 ns resolution PWM controllers. The R5F526TBCDFN#30 integrates HRPWM directly with GPTWa timers, enabling real-time dead-time correction based on temperature or load conditions.

Can the R5F526TBCDFN#30 perform simultaneous sampling across multiple ADC channels?

Yes, the R5F526TBCDFN#30 supports simultaneous sampling using three independent 12-bit S12ADH ADC units: Unit 0 (4 channels), Unit 1 (4 channels), and Unit 2 (14 channels), totaling 22 channels. Each unit includes dedicated sample-and-hold circuits, enabling true concurrent acquisition of motor phase currents and DC-link voltage. The R5F526TBCDFN#30 allows synchronization of conversion triggers from MTU3d or GPTWa timers to align sampling precisely with PWM center points for optimal current reconstruction accuracy.