Renesas R5F526TAADFL#50

Overview

R5F526TAADFL#50 from Renesas is a 32-bit RXv3 core microcontroller optimized for motor control and industrial inverter applications, operating at up to 120 MHz with 709 CoreMark performance, 512 KB on-chip flash, 64 KB SRAM, and integrated CAN FD, high-resolution PWM (260 ps min. resolution), and dual 12-bit D/A converters. It supports IEC60730 safety compliance and Trusted Secure IP Lite encryption.

For engineers reviewing the R5F526TAADFL#50 datasheet, R5F526TAADFL#50 pinout, R5F526TAADFL#50 application, or R5F526TAADFL#50 equivalent, key selection criteria include 120-MHz PWM timing precision, simultaneous 3-phase/5-phase complementary PWM generation, CAN FD interface compliance per ISO11898-1:2015, and on-chip data flash endurance (100,000 erase/write cycles).

Technical Context

The R5F526TAADFL#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. Its clock system integrates PLL, HOCO (16/18/20 MHz), LOCO (240 kHz), and IWDT-dedicated 120-kHz oscillator - enabling independent domain clocking (ICLK up to 120 MHz, PCLKA up to 120 MHz, PCLKB up to 60 MHz).

Peripheral coordination is managed via Event Link Controller (ELC) with 183 internal event signals, allowing hardware-triggered operation of timers, ADCs, and communication modules without CPU intervention. Safety features include MPU, Trusted Memory (TM), register write protection, CRCA, and oscillation-stop detection - all aligned with IEC60730 Class B requirements.

Key Specifications

Pinout & Package

Package: PLQP0100KB-B (100-pin LFQFP, 14 × 14 mm, 0.5 mm pitch). Pin count and I/O configuration match the 100-pin variant: 82 general-purpose I/O pins, 1 dedicated input pin, 82 pull-up resistors, 82 open-drain outputs, 2 × 5-V-tolerant pins, 15 large-current output pins.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F526TAADFL#50, the R5F526TAAFE#50 offers reduced integration for compact inverter modules, while the R5F566TEADFP#30 delivers higher compute headroom at the cost of increased thermal design complexity and absence of on-chip data flash - making R5F526TAADFL#50 optimal for cost-sensitive, safety-certified 120-MHz motor control.

Availability

R5F526TAADFL#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 support, and traceable sourcing.

Supply support for R5F526TAADFL#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 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 hardware, and real-time communication interfaces into a single 120-MHz MCU platform.

FAQ

What is the maximum operating frequency and CoreMark score of the R5F526TAADFL#50?

The R5F526TAADFL#50 operates at a maximum frequency of 120 MHz and achieves 709 CoreMark in benchmark testing. This performance level is enabled by the RXv3 CPU core's single-cycle instruction execution, 32-bit multiplier/divider, and barrel shifter - all verified in the official R01DS0407EJ0120 datasheet. The R5F526TAADFL#50 maintains deterministic timing critical for motor control loops.

Does the R5F526TAADFL#50 support CAN FD, and which standard does it comply with?

Yes, the R5F526TAADFL#50 integrates a single-channel CAN FD module compliant with ISO11898-1:2015, supporting both standard and extended frames at data rates up to 5 Mbps. This implementation includes bit-rate switching, flexible data-length payloads, and error confinement - confirmed in Section 1.1 and Table 1.1 of the R01DS0407EJ0120 datasheet. The R5F526TAADFL#50 uses dedicated CANFD_TX/RX pins in its 100-pin LFQFP package.

How many ADC channels and sample-and-hold units does the R5F526TAADFL#50 provide?

The R5F526TAADFL#50 includes a 12-bit S12ADH ADC with 21 total input channels distributed across three independent units: Unit 0 (4 channels, 3 sample-and-hold circuits), Unit 1 (4 channels, 3 sample-and-hold circuits), and Unit 2 (14 channels). This configuration enables true simultaneous sampling across multiple current/voltage sensors - a capability explicitly documented for the 64-KB RAM variant in the R01DS0407EJ0120 datasheet. The R5F526TAADFL#50 leverages this for FOC motor control.

What is the resolution and timing capability of the HRPWM in the R5F526TAADFL#50?

The R5F526TAADFL#50 features a 4-channel High-Resolution PWM (HRPWM) circuit that overlays GPTWa outputs with a minimum timing resolution of 260 ps when operating at 120 MHz. This allows sub-nanosecond edge placement for SiC/GaN gate drivers - directly specified in the "High-resolution PWM waveform generation circuit" section of the R01DS0407EJ0120 datasheet. The R5F526TAADFL#50 uses this to achieve <1% dead-time error in high-frequency inverter applications.

Is the R5F526TAADFL#50 qualified for IEC60730 safety compliance, and what hardware features enable it?

Yes, the R5F526TAADFL#50 includes dedicated hardware for IEC60730 Class B compliance: oscillation-stoppage detection, self-diagnostic functions for ADC and comparators, clock frequency accuracy measurement, independent watchdog timer (IWDTa), RAM test-assisting function (DOC), CRCA, and register write protection. These features are explicitly listed in the "Useful functions for IEC60730 compliance" section of the R01DS0407EJ0120 datasheet. The R5F526TAADFL#50 integrates them without external components.