Renesas R5F524T8AGFK#31

Overview

R5F524T8AGFK#31 from Renesas is a 32-bit RXv2 core MCU optimized for motor control and industrial inverter applications, operating at up to 80 MHz (153.6 DMIPS), featuring integrated 12-bit ADC with 3-channel simultaneous sampling, dual 8-bit DACs, CAN interface (ISO 11898-1), and MTU3/GPT PWM units supporting three-phase complementary output with dead-time control - deployed in servo drives and HVAC compressor controllers.

For engineers reviewing the R5F524T8AGFK#31 datasheet, R5F524T8AGFK#31 pinout, R5F524T8AGFK#31 application, or R5F524T8AGFK#31 equivalent, key selection considerations include its 128-KB flash / 16-KB SRAM configuration, 80-pin LFQFP 0.5 mm pitch package, IEC60730 safety support, and dedicated hardware acceleration for real-time motor timing and analog signal conditioning.

Technical Context

The R5F524T8AGFK#31 implements the RXv2 CPU core with IEEE 754-compliant single-precision FPU and 32-bit MAC/DSP instructions, enabling deterministic execution of field-oriented control (FOC) algorithms. Its clock system integrates PLL, on-chip oscillators, and CAC for real-time clock accuracy monitoring - critical for synchronized PWM and ADC triggering.

Hardware peripherals are tightly coupled for motor control: MTU3 provides nine 16-bit channels with phase counting, A/D start triggering, and automatic dead-time insertion; GPT delivers four 16-bit channels supporting cascaded 32-bit operation and comparator interlocking; S12ADF includes three independent 12-bit ADC units with programmable gain amplifiers (1+3 channels) and group-scan priority for multi-sensor sampling.

Key Specifications

Pinout & Package

Package: 80-pin LFQFP (PLQP0080KB-B), 14 × 14 mm, 0.5 mm pitch, –40 to +85°C operating range, 2.7–5.5 V supply.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F524T8AGFK#31, R5F524TAADFN#31 offers expanded flash for complex motion profiles without layout change, while R5F523T7ADFP#31 trades clock speed, safety features, and package size for lower BOM cost - making R5F524T8AGFK#31 optimal for certified, high-dynamics motor control where 80 MHz deterministic timing and integrated safety are mandatory.

Availability

R5F524T8AGFK#31 is available at Aetrix Electronics and suitable for industrial servo drives, HVAC inverter modules, and electric power tool controllers requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for safety-critical designs.

Supply support for R5F524T8AGFK#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 is designed specifically for high-performance motor control applications, integrating precision analog peripherals, real-time timers, and safety features to replace discrete motor control ICs and simplify inverter system design.

FAQ

What is the maximum operating frequency and core type of the R5F524T8AGFK#31?

The R5F524T8AGFK#31 features a 32-bit RXv2 CPU core with a maximum operating frequency of 80 MHz, delivering 153.6 DMIPS performance. It includes an IEEE 754-compliant single-precision floating-point unit (FPU), 32-bit multiply-accumulate instructions, and a 5-stage pipeline - all optimized for deterministic execution of motor control algorithms such as field-oriented control (FOC). This performance level is sustained across its full –40°C to +85°C operating temperature range.

Does the R5F524T8AGFK#31 support IEC60730 functional safety compliance?

Yes, the R5F524T8AGFK#31 includes multiple hardware-assisted features for IEC60730 Class B compliance: self-diagnostic functions for the A/D converter and clock frequency accuracy measurement circuit (CAC), independent watchdog timer (IWDT) with dedicated 15-kHz oscillator, RAM test assistance via the data operation circuit (DOC), and memory protection unit (MPU) with eight configurable protection areas. These features reduce software overhead and external component count required for safety certification in motor control applications.

What ADC capabilities does the R5F524T8AGFK#31 provide for motor current sensing?

The R5F524T8AGFK#31 integrates three independent 12-bit S12ADF ADC units totaling 22 channels, with unit 1 featuring a 3-channel simultaneous sample-and-hold (S/H) circuit. This allows synchronized sampling of three motor phase currents in a single conversion cycle - critical for accurate field-oriented control. Each channel supports programmable sampling time, group-scan priority, and programmable gain amplification (2.0×–4.444×) on four channels, enabling direct connection to low-voltage shunt resistors without external signal conditioning.

Which PWM timer modules are available on the R5F524T8AGFK#31 and how are they used in inverter control?

The R5F524T8AGFK#31 includes the MTU3 (9×16-bit channels) and GPT (4×16-bit channels) timer units. MTU3 supports three-phase complementary PWM output with automatic dead-time insertion and compensation, directly driving inverter gate drivers. GPT provides additional PWM channels with comparator interlocking for auxiliary timing and fault response. Both modules operate at 80 MHz on PCLKA and can trigger ADC conversions synchronously with PWM edges - ensuring precise current sampling aligned to switching transitions in R5F524T8AGFK#31-based inverters.

What package type and pin count does the R5F524T8AGFK#31 use?

The R5F524T8AGFK#31 uses an 80-pin LFQFP package (PLQP0080KB-B) with 14 × 14 mm body size and 0.5 mm pin pitch. This package supports 60 general-purpose I/O pins, including 45 open-drain outputs and 2 pins with 5-V tolerance. The pinout is fully compatible with other RX24T variants in the same 80-pin footprint, enabling scalable design reuse across different flash/RAM configurations within the family.