Renesas R5F526TFCDNE#50

Overview

R5F526TFCDNE#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 R5F526TFCDNE#50 datasheet, R5F526TFCDNE#50 pinout, R5F526TFCDNE#50 application, or R5F526TFCDNE#50 equivalent, key selection considerations include its dual-bank flash architecture for safe firmware updates, IEC60730-compliant safety features (oscillation-stop detection, RAM test assist, CRC calculator), and dedicated HRPWM circuitry enabling precise gate drive timing in BLDC/PMSM motor drives.

Technical Context

The R5F526TFCDNE#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-critical for real-time motor control loop execution. Its clock system supports independent PCLKA (up to 120 MHz) and PCLKC (up to 120 MHz) domains, enabling simultaneous high-speed peripheral operation including GPTWa timers and HRPWM.

It integrates three distinct A/D converter units (S12ADH) with simultaneous sampling across up to 7 channels using dedicated sample-and-hold circuits, plus six analog comparators (CMPCa) and two 12-bit D/A converters usable as comparator reference sources-enabling closed-loop current/voltage sensing and protection in inverter stages without external components.

Key Specifications

Pinout & Package

Package: PLQP0100KB-B (100-pin LQFP, 14 × 14 mm, 0.5 mm pitch). This package provides 82 general-purpose I/O pins with 5-V tolerance, open-drain capability, and programmable pull-up resistors-optimized for industrial noise immunity and direct interfacing with gate drivers and sensors.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F526TFCDNE#50, the R5F526TADNE#50 offers identical peripheral sets in a smaller footprint but sacrifices 256 KB flash and 16 KB SRAM needed for dual-bank firmware and large control buffers, while the R5F523T5ADNE#50 lacks HRPWM and TFUv2-making it unsuitable for high-fidelity motor control demanding <1 ns timing precision or real-time trigonometric computation.

Availability

R5F526TFCDNE#50 is available at Aetrix Electronics and suitable for industrial inverter drives, BLDC motor controllers, home appliance inverters, and servo amplifiers requiring stable component supply, long-term lifecycle support, and traceable sourcing for production programs.

Supply support for R5F526TFCDNE#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 automotive, industrial, and IoT markets.

The RX26T Group is designed specifically for high-performance motor control applications, integrating hardware-accelerated PWM, simultaneous sampling ADCs, and IEC60730 safety features to replace discrete analog/motor control ICs in inverter systems.

FAQ

What is the maximum operating frequency and CoreMark score of the R5F526TFCDNE#50?

The R5F526TFCDNE#50 operates at a maximum frequency of 120 MHz and achieves 709 CoreMark in benchmark testing. This performance level enables real-time execution of field-oriented control (FOC) algorithms with minimal jitter. The RXv3 CPU core delivers single-cycle instruction execution and includes a single-precision floating-point unit compliant with IEEE 754-essential for accurate motor control math. The R5F526TFCDNE#50 maintains this performance across its full operating temperature range of –40°C to +85°C.

Does the R5F526TFCDNE#50 support CAN FD, and what standard does it comply with?

Yes, the R5F526TFCDNE#50 integrates a CAN FD module compliant with ISO 11898-1:2015 for both standard and extended frames. It supports data rates up to 5 Mbps in the FD data phase, enabling high-bandwidth diagnostics and control messaging in industrial networks. The CAN FD peripheral includes message filtering, FIFO buffering, and error counters-reducing CPU overhead in multi-node motor control systems. This capability is confirmed in the R01DS0407EJ0120 datasheet for the RX26T Group, which explicitly lists CAN FD as a feature of the R5F526TFCDNE#50.

What PWM resolution and complementary output capabilities does the R5F526TFCDNE#50 provide?

The R5F526TFCDNE#50 delivers 260 ps minimum timing resolution via its 4-channel High-Resolution PWM (HRPWM) circuit, synchronized with the 32-bit GPTWa timers. It supports single-phase (10 outputs), 3-phase (3 outputs), and 5-phase (2 outputs) complementary PWM modes with automatic dead-time insertion. These features enable precise gate drive control for SiC and GaN inverters operating above 100 kHz. The R5F526TFCDNE#50 also includes Port Output Enable (POE3D) logic to force PWM outputs into high-impedance states during fault conditions-critical for safe motor shutdown.

How does the R5F526TFCDNE#50 support IEC60730 functional safety compliance?

The R5F526TFCDNE#50 includes multiple hardware features certified for IEC60730 Class B compliance: oscillation-stop detection for main clock failure, RAM test assist using Data Operation Controller (DOC), CRC calculator (CRCA) for memory integrity checking, register write protection to prevent accidental corruption, and self-diagnostic A/D converter functions. These capabilities eliminate the need for external safety monitors in many inverter applications. The R5F526TFCDNE#50 datasheet (R01DS0407EJ0120) documents all these features under "Useful functions for IEC60730 compliance."

What analog peripherals are integrated into the R5F526TFCDNE#50 for motor control sensing?

The R5F526TFCDNE#50 integrates three 12-bit A/D converter units (S12ADH) supporting simultaneous sampling across up to 7 channels using dedicated sample-and-hold circuits, six analog comparators (CMPCa) with selectable reference inputs, and two 12-bit D/A converters (R12DAb) usable as comparator references. These peripherals enable full analog signal acquisition for phase current, DC bus voltage, temperature, and fault detection-without external op-amps or DACs. The R5F526TFCDNE#50 also includes an on-chip temperature sensor with ±1.0°C relative precision, digitized via the S12ADH unit 2.