Renesas R5F524TAAGFK#31

Overview

R5F524TAAGFK#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 (IEEE754 compliant), 256 KB flash, 16 KB SRAM, and 8 KB data flash with 1M erase/write cycles. It integrates dual 12-bit ADC units with 3-channel simultaneous sampling, programmable gain amplifiers, and MTU3/GPT timers supporting three-phase complementary PWM output with automatic dead-time insertion.

For engineers reviewing the R5F524TAAGFK#31 datasheet, R5F524TAAGFK#31 pinout, R5F524TAAGFK#31 application, or R5F524TAAGFK#31 equivalent, key selection considerations include its 80-pin LFQFP-0.5 mm package, IEC60730-compliant self-diagnostic features (ADC disconnection detection, clock accuracy monitoring, RAM test assistance), CAN 2.0B interface, and dedicated hardware for real-time motor phase control with synchronized A/D triggering.

Technical Context

The R5F524TAAGFK#31 implements the RXv2 CISC Harvard architecture with 5-stage pipeline, variable-length instructions, and memory protection unit (MPU) supporting eight configurable protection areas. Its timing subsystem combines PLL-synthesized 80 MHz ICLK with independent PCLK domains-PCLKA at 80 MHz for MTU3/GPT, PCLKB at 40 MHz for peripherals, and PCLKD at 40 MHz for S12AD-enabling deterministic real-time execution across motor control, communication, and analog acquisition tasks.

Hardware acceleration includes a 32×32→64-bit multiplier, 32÷32 divider (2-cycle min), barrel shifter, and CRC calculator with three polynomials (CRC-8/CRC-16 variants). The on-chip debugging system uses FINE interface compatible with E1 emulator, while safety-critical functions are supported by IWDT with dedicated 15-kHz oscillator, CAC for clock drift measurement, and DOC for data integrity verification.

Key Specifications

Pinout & Package

Package: 80-pin LFQFP, 14 × 14 mm body, 0.5 mm pitch, lead-free (Sn only), RoHS compliant. Pin count and peripheral availability match Chip Version A configuration per Table 1.2.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F524TAAGFK#31, R5F524TBAGFK#31 offers expanded memory and full timer safety features but increases BOM cost; STM32F334R8T6 provides ARM ecosystem compatibility at lower price but demands external safety mechanisms and lacks CAN, making it unsuitable for distributed industrial drives.

Availability

R5F524TAAGFK#31 is available at Aetrix Electronics and suitable for industrial motor drives, home appliance inverters, PLC I/O modules, and renewable energy converters requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for R5F524TAAGFK#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, power, and SoC solutions for automotive, industrial, and IoT markets.

The RX24T Group, including R5F524TAAGFK#31, was designed specifically for high-performance motor control applications requiring real-time processing, integrated analog front-ends, and functional safety compliance in compact industrial packages.

FAQ

What is the maximum operating frequency and CPU architecture of the R5F524TAAGFK#31?

The R5F524TAAGFK#31 operates at a maximum frequency of 80 MHz using the 32-bit RXv2 CPU core. This core implements a CISC Harvard architecture with 5-stage pipeline, variable-length instructions, and delivers 153.6 DMIPS. It includes an on-chip FPU compliant with IEEE754 single-precision standard, 32×32-bit multiplier, and 32÷32-bit divider with two-cycle minimum execution. The R5F524TAAGFK#31 uses this architecture to execute motor control algorithms with deterministic timing and minimal jitter.

Does the R5F524TAAGFK#31 support IEC60730 Class B compliance out of the box?

Yes, the R5F524TAAGFK#31 includes hardware-assisted IEC60730 Class B compliance features: self-diagnostic ADC disconnection detection, clock frequency accuracy measurement circuit (CAC), 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 integrated into the silicon and require no external components, enabling certified safety functionality directly within the R5F524TAAGFK#31.

What ADC capabilities does the R5F524TAAGFK#31 offer for motor current sensing?

The R5F524TAAGFK#31 integrates three 12-bit ADC units totaling 22 channels, with Unit 1 providing 3-channel simultaneous sample-and-hold for synchronous current sensing. Each channel supports programmable sampling time, group scan priority, and self-diagnostic functions. Four channels feature programmable gain amplifiers (2.0×–4.444×) to condition low-voltage shunt signals. ADSM0/ADSM1 pins generate hardware-triggered conversion starts aligned precisely to PWM edges - all critical for accurate field-oriented control in the R5F524TAAGFK#31.

Which PWM timer modules are available on the R5F524TAAGFK#31 and what motor control functions do they support?

The R5F524TAAGFK#31 includes MTU3 (9 channels) and GPT (4 channels), both operating at 80 MHz. MTU3 supports three-phase complementary PWM × 2 channels with automatic dead-time insertion, reset-synchronized PWM, and phase counting mode. GPT provides single-phase complementary × 4 channels or three-phase × 1 + single-phase × 1. Both timers generate A/D start triggers and support comparator interlocking. These capabilities make the R5F524TAAGFK#31 suitable for driving 3-phase inverters with precise timing and fault response.

What communication interfaces are integrated into the R5F524TAAGFK#31 and how are they typically used in motor control systems?

The R5F524TAAGFK#31 integrates CAN 2.0B (1 channel, 16 message boxes), SCI × 3 (asynchronous/clock-sync/I²C/SPI modes), RIIC × 1 (400 kbps), and RSPI × 1 (20 Mbps). In motor control systems, CAN handles distributed drive coordination and diagnostics; SCI interfaces connect to host controllers or encoders; RIIC manages temperature sensors or EEPROMs; RSPI links to high-speed ADCs or digital isolators. All interfaces operate with deterministic timing synchronized to the R5F524TAAGFK#31's multi-domain clock system.