Renesas R5F526T8ADFL#50

Overview

R5F526T8ADFL#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 R5F526T8ADFL#50 datasheet, R5F526T8ADFL#50 pinout, R5F526T8ADFL#50 application, or R5F526T8ADFL#50 equivalent, this MCU delivers deterministic real-time control for brushless DC and permanent magnet synchronous motor drives, with IEC60730-compliant safety features, on-chip FPU, and simultaneous sampling across three 12-bit A/D units.

Technical Context

The R5F526T8ADFL#50 implements the RXv3 CPU core with single-cycle instruction execution, 16 general-purpose 32-bit registers, and IEEE 754-compliant single-precision FPU - enabling high-efficiency motor vector control algorithms. Its clock system integrates PLL-synthesized 120 MHz ICLK, independent 120 kHz IWDT oscillator, and configurable peripheral clocks (PCLKA up to 120 MHz, PCLKB/C/D at derived frequencies) to synchronize high-speed timers and ADCs.

Real-time responsiveness is enhanced by the Event Link Controller (ELC), which enables direct inter-module triggering without CPU intervention - e.g., MTU3d or GPTWa timer events can initiate A/D conversion or trigger HRPWM edge adjustments. The dual-bank flash supports background programming during execution, while Trusted Memory (TM) enforces secure boot and code protection.

Key Specifications

Pinout & Package

Package: PLQP0100KB-B (100-pin LQFP, 14 × 14 mm, 0.5 mm pitch). This package supports 82 general-purpose I/O pins with 5-V tolerance, open-drain capability, programmable pull-up resistors, and large-current output on 15 pins - suitable for direct gate-driver interfacing and sensor signal conditioning.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F526T8ADFL#50, the R5F526TADFL#50 sacrifices SRAM and A/D channel depth for cost reduction, while the R5F523T5ADFP#30 trades performance, resolution, and integration for footprint and price - making R5F526T8ADFL#50 the only option supporting full-featured, safety-certified, high-resolution motor control in a single chip.

Availability

R5F526T8ADFL#50 is available at Aetrix Electronics and suitable for industrial motor drives, home appliance inverters, automotive auxiliary systems, and PLC motion control applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for R5F526T8ADFL#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, power, and SoC solutions for automotive, industrial, and IoT markets.

The RX26T Group - including R5F526T8ADFL#50 - is engineered specifically for high-performance motor control, integrating precision PWM, multi-channel ADC, safety features, and real-time connectivity to replace discrete control + driver + safety IC combinations.

FAQ

What is the maximum operating frequency and CPU architecture of the R5F526T8ADFL#50?

The R5F526T8ADFL#50 features a 32-bit RXv3 CPU core operating at up to 120 MHz, achieving 709 CoreMark. It supports single-cycle instruction execution, IEEE 754-compliant single-precision FPU, and 16 general-purpose 32-bit registers - all confirmed in the R01DS0407EJ0120 Rev.1.20 datasheet. This architecture enables deterministic execution of field-oriented control (FOC) algorithms in real time.

Does the R5F526T8ADFL#50 support CAN FD, and what standard does it comply with?

Yes, the R5F526T8ADFL#50 integrates one 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 phase and includes built-in message filtering, FIFO buffering, and error handling - as specified in Section 1.1 and Table 1.1 of the R01DS0407EJ0120 datasheet.

How many A/D converter channels does the R5F526T8ADFL#50 support, and what is its sampling capability?

The R5F526T8ADFL#50 supports 22 total 12-bit A/D channels across three S12ADH units: Unit 0 (4 channels), Unit 1 (4 channels), and Unit 2 (14 channels). It enables simultaneous sampling across all three units with dedicated sample-and-hold circuits - critical for accurate 3-phase current measurement in motor control applications.

What PWM resolution and complementary output capabilities does the R5F526T8ADFL#50 provide?

The R5F526T8ADFL#50 delivers 260 ps minimum timing resolution via its 4-channel HRPWM block, synchronized with GPTWa timers. It supports single-phase (10 outputs), 3-phase (2 outputs), and 5-phase (2 outputs) complementary PWM modes with automatic dead-time insertion - all verified in the "High-resolution PWM waveform generation circuit" section of the R01DS0407EJ0120 datasheet.

Is the R5F526T8ADFL#50 qualified for IEC60730 functional safety compliance?

Yes, the R5F526T8ADFL#50 includes multiple IEC60730 Class B–compliant features: oscillation-stop detection, A/D disconnection monitoring, clock frequency accuracy measurement, independent watchdog timer (IWDTa), RAM test assist via DOC, and CRC calculator (CRCA). These are explicitly documented in the "Useful functions for IEC60730 compliance" section of the datasheet.