Renesas R5F524TAADFN#31

Overview

R5F524TAADFN#31 from Renesas is a 32-bit RXv2 microcontroller optimized for motor control and industrial inverter applications, featuring an 80 MHz CPU core delivering 153.6 DMIPS, on-chip single-precision FPU (IEEE 754 compliant), 256 KB flash, 16 KB SRAM, and 8 KB data flash with 1M erase/write cycles. It integrates dual 12-bit ADC units (5+5 channels) with 3-channel simultaneous sample-and-hold, programmable gain amplifiers, and three-phase complementary PWM via MTU3 (2× 3-phase + 4× single-phase outputs).

For engineers reviewing the R5F524TAADFN#31 datasheet, R5F524TAADFN#31 pinout, R5F524TAADFN#31 application, or R5F524TAADFN#31 equivalent, key selection considerations include its 80-pin LFQFP 0.5 mm pitch package, IEC60730-compliant safety features (self-diagnostic ADC, CAC, IWDT), CAN 2.0B interface, and dedicated high-resolution PWM timing architecture for BLDC/PMSM motor drive.

Technical Context

The R5F524TAADFN#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 clocks: ICLK at 80 MHz for CPU execution, PCLKA at 80 MHz for MTU3/GPT timers, and PCLKD at 40 MHz for S12AD conversion - enabling precise timing isolation between motor control loops and analog acquisition.

Motor control functionality is anchored by the MTU3 unit (9× 16-bit channels) supporting three-phase complementary PWM with automatic dead-time insertion, phase counting, and A/D trigger synchronization, plus GPTB (4× 16-bit channels) for cascaded 32-bit timing and comparator-interlocked PWM negation - all coordinated via the DTC for zero-CPU-overhead waveform updates.

Key Specifications

Pinout & Package

Package: 80-pin LFQFP (PLQP0080KB-B), 14 × 14 mm, 0.5 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 R5F524TAADFN#31, R5F524TBADFP#31 offers expanded I/O and memory in a larger package but shares identical core peripherals and safety features, while STM32G474RET6 delivers higher raw performance and ADC throughput but requires additional external components and safety validation effort for industrial motor control compliance.

Availability

R5F524TAADFN#31 is available at Aetrix Electronics and suitable for industrial motor drives, BLDC inverter modules, and appliance control systems requiring stable component supply, long-term lifecycle assurance, and automotive-grade reliability under extended temperature operation.

Supply support for R5F524TAADFN#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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, and power devices for industrial, automotive, and infrastructure markets.

The RX24T Group is designed specifically for high-precision motor control applications, integrating enhanced PWM timing, synchronized analog acquisition, and IEC60730-compliant safety features into a single 32-bit MCU platform.

FAQ

What is the maximum operating frequency and CPU performance of the R5F524TAADFN#31?

The R5F524TAADFN#31 operates at a maximum frequency of 80 MHz using the RXv2 32-bit CPU core and delivers 153.6 DMIPS of processing performance. Its architecture includes a 5-stage pipeline, variable-length instructions, and on-chip FPU compliant with IEEE 754 single-precision standards - enabling efficient execution of motor control algorithms such as field-oriented control (FOC) and sensorless estimation without external coprocessors. The R5F524TAADFN#31 sustains this performance across its full –40°C to +85°C operating range.

Does the R5F524TAADFN#31 support simultaneous sampling across multiple ADC channels?

Yes, the R5F524TAADFN#31 supports true simultaneous sampling on up to three channels within S12ADF unit 1 using its integrated 3-channel sample-and-hold circuit. This capability is essential for accurate three-phase current reconstruction in motor control applications, eliminating phase skew between sampled signals. Each ADC channel also supports individually configurable sampling time, group scan priority control, and self-diagnostic functions aligned with IEC60730 requirements. The R5F524TAADFN#31 implements this feature without external components or timing coordination overhead.

What motor control-specific peripherals are integrated into the R5F524TAADFN#31?

The R5F524TAADFN#31 integrates MTU3 (9× 16-bit timer channels) and GPTB (4× 16-bit timer channels) with hardware-accelerated three-phase complementary PWM generation, automatic dead-time insertion, phase counting, and A/D trigger synchronization. It also includes POE3b for hardware-initiated high-impedance state transitions during fault events, and four programmable gain amplifier channels for direct shunt resistor signal conditioning. These peripherals collectively enable complete inverter gate drive control, current sensing, and protection - all within the R5F524TAADFN#31 without external timing or analog support ICs.

How does the R5F524TAADFN#31 meet IEC60730 safety requirements?

The R5F524TAADFN#31 includes multiple hardware-assisted IEC60730 Class B compliance features: self-diagnostic ADC with analog input disconnection detection, clock frequency accuracy measurement circuit (CAC) for oscillator monitoring, independent watchdog timer (IWDT) with dedicated 15-kHz oscillator, memory protection unit (MPU), register write protection, and data operation circuit (DOC) for RAM testing. These features are documented in Renesas' functional safety manual and reduce the need for external safety monitors. The R5F524TAADFN#31 leverages these integrated capabilities to streamline certification for industrial motor control applications.

What package type and pin count does the R5F524TAADFN#31 use?

The R5F524TAADFN#31 uses an 80-pin LFQFP package (PLQP0080KB-B) with 14 × 14 mm body size and 0.5 mm pin pitch. It provides 60 general-purpose I/O pins, including 45 open-drain outputs and 2 pins with 5-V tolerance. This package balances compact footprint with sufficient I/O for 3-phase inverter control, analog sensing, and communication interfaces (CAN, SCI, I2C, RSPI). The R5F524TAADFN#31 is lead-free (Sn-only surface finish) and RoHS compliant, meeting industrial environmental standards.