Renesas R5F524T8ADFF#31

Overview

R5F524T8ADFF#31 from Renesas is a 32-bit RXv2 microcontroller optimized for motor control and industrial inverter applications, featuring an 80 MHz CPU core (153.6 DMIPS), on-chip FPU compliant with IEEE754, 128 KB code flash, 16 KB SRAM, and 8 KB data flash rated for 1,000,000 erase/write cycles. It integrates dual 12-bit ADC units with 3-channel simultaneous sampling, three-phase complementary PWM via MTU3 (2 channels), and CAN interface compliant with ISO11898-1.

For engineers reviewing the R5F524T8ADFF#31 datasheet, R5F524T8ADFF#31 pinout, R5F524T8ADFF#31 application, or R5F524T8ADFF#31 equivalent, this MCU delivers deterministic real-time motor control with hardware-accelerated PWM dead-time insertion, IEC60730-compliant self-diagnostic support, and integrated programmable gain amplifiers for shunt-based current sensing - critical for servo drives and HVAC compressor control.

Technical Context

The R5F524T8ADFF#31 implements the RXv2 CPU core with Harvard architecture, 5-stage pipeline, and variable-length instructions enabling ultra-compact code density. Its clock system supports independent domain control: ICLK at 80 MHz for CPU execution, PCLKA at 80 MHz for MTU3/GPT timers, and PCLKD at 40 MHz for S12AD ADC operation.

Hardware peripherals are tightly coupled for motor control: MTU3 provides nine 16-bit timer channels with phase counting, automatic dead-time compensation, and A/D start triggering; GPTB offers four 16-bit PWM channels supporting cascaded 32-bit operation and comparator interlocking for overcurrent protection. The device includes POE3A for safe high-impedance state control of waveform outputs during fault conditions.

Key Specifications

Pinout & Package

Package: LQFP-80 (PLQP0080JA-A), 14 × 14 mm, 0.65 mm pitch, lead-free (Sn only), RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F524T8ADFF#31, R5F524TAADFF#31 provides headroom for advanced control features without changing footprint, while R5F523T7ADFP#31 trades peripheral richness for lower cost and smaller package - both require validation of pin compatibility and peripheral mapping in existing schematics.

Availability

R5F524T8ADFF#31 is available at Aetrix Electronics and suitable for industrial motor drives, HVAC compressor control, and home appliance inverters requiring stable component supply across multi-year production cycles.

Supply support for R5F524T8ADFF#31 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 RX24T Group, including R5F524T8ADFF#31, was designed specifically for high-performance motor control applications - integrating precision timing, robust analog front-ends, and functional safety features to replace discrete MCU + analog + PWM controller combinations.

FAQ

What is the maximum operating frequency and core performance of the R5F524T8ADFF#31?

The R5F524T8ADFF#31 operates at a maximum frequency of 80 MHz using the RXv2 32-bit CPU core, delivering 153.6 DMIPS of processing performance. Its Harvard architecture with 5-stage pipeline and variable-length instruction set enables efficient execution of motor control algorithms. The on-chip FPU supports IEEE754-compliant single-precision floating-point operations, essential for field-oriented control calculations in the R5F524T8ADFF#31.

Does the R5F524T8ADFF#31 support IEC60730 Class B compliance for household appliances?

Yes, the R5F524T8ADFF#31 includes multiple hardware features for IEC60730 Class B compliance: memory protection unit (MPU), register write protection, clock frequency accuracy measurement circuit (CAC), independent watchdog timer (IWDT) with dedicated oscillator, RAM test assistance via DOC, and ADC self-diagnostic/disconnection detection functions. These capabilities reduce external component requirements and simplify certification for the R5F524T8ADFF#31 in safety-critical appliance applications.

How many PWM channels with three-phase complementary output does the R5F524T8ADFF#31 support?

The R5F524T8ADFF#31 supports three-phase complementary PWM output on two independent MTU3 channels (totaling 2 × 3-phase outputs), plus additional single-phase complementary PWM on four GPTB channels. This configuration enables driving dual inverter stages or implementing redundant motor control paths. The MTU3 hardware handles dead-time insertion, phase counting, and A/D trigger synchronization - all without CPU intervention in the R5F524T8ADFF#31.

What ADC capabilities does the R5F524T8ADFF#31 offer for motor current sensing?

The R5F524T8ADFF#31 integrates three 12-bit S12ADF ADC units: unit 0 (5 channels), unit 1 (5 channels + 3-channel simultaneous sample-and-hold), and unit 2 (12 channels). Unit 1's simultaneous sampling supports shunt-based three-phase current measurement with zero time skew. Programmable gain amplifiers (4 total) provide 2.0×–4.444× gain for direct low-voltage shunt signal conditioning - eliminating external op-amps in the R5F524T8ADFF#31 motor control signal chain.

Is CAN interface supported on the R5F524T8ADFF#31, and what standard does it comply with?

Yes, the R5F524T8ADFF#31 includes one CAN module (RSCAN) compliant with ISO11898-1, supporting both standard and extended frame formats. It features 16 configurable message boxes, hardware acceptance filtering, and error confinement - enabling robust communication with host controllers, other drives, or distributed I/O nodes. The CAN peripheral operates independently of CPU load, ensuring deterministic messaging in real-time motor control networks using the R5F524T8ADFF#31.