Renesas R5F524T8ADFK#31

Overview

R5F524T8ADFK#31 from Renesas is a 32-bit RXv2 core microcontroller 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 synchronous sample-and-hold, dual 8-bit DACs, CAN interface (ISO 11898-1), and hardware PWM units including MTU3 (9 channels) and GPT (4 channels). It targets real-time closed-loop motor drive systems requiring precise timing, analog sensing, and fault-safe operation.

For engineers reviewing the R5F524T8ADFK#31 datasheet, R5F524T8ADFK#31 pinout, R5F524T8ADFK#31 application, or R5F524T8ADFK#31 equivalent, this page delivers verified technical context, exact package mapping (PLQP0080KB-B, 80-pin LFQFP, 0.5 mm pitch), validated pin functions, confirmed IEC60730 safety features, and two rigorously cross-checked alternative parts - all derived from Renesas R01DS0257EJ0200 Rev.2.00 and official package documentation.

Technical Context

The R5F524T8ADFK#31 implements the RXv2 CPU core with IEEE 754-compliant 32-bit FPU, 32-bit multiply-accumulate DSP instructions, and memory protection unit (MPU) supporting eight configurable regions. Its clock system integrates PLL (4–12.5 MHz input), on-chip high/low-speed oscillators, and CAC for real-time clock accuracy monitoring - critical for time-sensitive motor control loops.

Peripheral architecture centers on deterministic timing: MTU3 operates at 80 MHz PCLKA with three-phase complementary PWM ×2 channels + single-phase complementary ×4 channels, while GPT runs at same frequency with comparator interlocking and dead-time generation. The 12-bit S12ADF ADC supports simultaneous sampling across 3 channels (unit 1), programmable gain amplifiers (×2.0 to ×4.444), and self-diagnostic functions compliant with IEC60730 Class B.

Key Specifications

Pinout & Package

Package: PLQP0080KB-B - 80-pin Low-profile Quad Flat Package, 12 × 12 mm body, 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 applications.

Compared with R5F524T8ADFK#31, R5F524TAADFF#31 offers greater firmware headroom but demands layout changes due to 0.65 mm pitch, while R5F523T7ADFP#31 sacrifices CAN, safety features, and advanced PWM capability to reduce BOM cost by ~18% - making it viable only for entry-level applications lacking functional safety or networking needs.

Availability

R5F524T8ADFK#31 is available at Aetrix Electronics and suitable for industrial motor drives, home appliance inverters, PLC I/O modules, and factory automation gateways requiring stable component supply, long-lifecycle assurance, and traceable sourcing for production programs.

Supply support for R5F524T8ADFK#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, with over 40 years of embedded systems expertise.

The RX24T Group - including R5F524T8ADFK#31 - was designed specifically for high-performance, safety-aware motor control in industrial and consumer inverters, integrating hardware acceleration for FOC, real-time fault response, and IEC60730 compliance features.

FAQ

What is the maximum operating frequency and CPU performance of the R5F524T8ADFK#31?

The R5F524T8ADFK#31 operates at a maximum frequency of 80 MHz using the RXv2 32-bit CPU core, delivering 153.6 DMIPS of processing performance. It includes a single-precision IEEE 754 floating-point unit and DSP instructions (32-bit MAC, 16-bit MSUB) - enabling efficient execution of motor control algorithms such as field-oriented control without external math coprocessors. This performance level is confirmed in Renesas document R01DS0257EJ0200 Rev.2.00, Section 1.1.

Does the R5F524T8ADFK#31 support IEC60730 Class B functional safety compliance?

Yes, the R5F524T8ADFK#31 includes multiple hardware features certified for IEC60730 Class B compliance: memory protection unit (MPU), register write protection, independent watchdog timer (IWDT) with dedicated 15-kHz oscillator, clock frequency accuracy measurement circuit (CAC), ADC disconnection detection, and RAM test assistance via the data operation circuit (DOC). These are documented in Sections 1.1 and 1.4 of R01DS0257EJ0200 Rev.2.00 and enable reduced external safety component count.

What ADC capabilities does the R5F524T8ADFK#31 offer for motor current sensing?

The R5F524T8ADFK#31 integrates three 12-bit S12ADF ADC units with 22 total channels (5+5+12), including a 3-channel synchronous sample-and-hold circuit in unit 1 - enabling simultaneous sampling of all three motor phase currents. Each channel supports programmable sampling time, and four channels feature a programmable gain amplifier (gain ×2.0 to ×4.444). Minimum conversion time is 1.0 µs at 40 MHz ADCLK, as specified in Table 1.1 and Section 1.1 of R01DS0257EJ0200 Rev.2.00.

Which PWM peripherals are available on the R5F524T8ADFK#31 and what motor control functions do they support?

The R5F524T8ADFK#31 provides 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, phase counting, and A/D trigger generation. GPT adds single-phase complementary PWM ×4 channels or three-phase ×1 + single-phase ×1, with comparator interlocking for overcurrent shutdown. These capabilities are detailed in Sections 1.1 and Table 1.2 of R01DS0257EJ0200 Rev.2.00.

What is the package type and pin count of the R5F524T8ADFK#31?

The R5F524T8ADFK#31 uses the PLQP0080KB-B package: an 80-pin Low-profile Quad Flat Package with 12 × 12 mm body size and 0.5 mm pitch, lead-free (Sn only) finish. This matches the "FN" suffix in the part numbering scheme (per Figure 1.1, R01DS0257EJ0200 Rev.2.00, Page 8) and is distinct from the 100-pin FP or 64-pin FM variants in the RX24T family.