Renesas R5F526TACDFL#50

Overview

R5F526TACDFL#50 from Renesas is a 32-bit RXv3 microcontroller optimized for motor control and industrial inverter applications, featuring 120 MHz operation, 512 KB code flash, 64 KB SRAM, 16 KB data flash, integrated CAN FD, and high-resolution PWM with 260 ps timing resolution. It integrates dual-bank flash for safe firmware updates, hardware encryption (AES-128/256), and IEC60730-compliant safety functions.

For engineers reviewing the R5F526TACDFL#50 datasheet, R5F526TACDFL#50 pinout, R5F526TACDFL#50 application, or R5F526TACDFL#50 equivalent, key selection criteria include 3-phase/5-phase complementary PWM capability, simultaneous 3-unit 12-bit ADC sampling, on-chip FPU for real-time motor algorithms, and Trusted Secure IP Lite for secure boot and key management.

Technical Context

The R5F526TACDFL#50 implements the RXv3 CPU core with single-cycle instruction execution, IEEE 754-compliant single-precision FPU, and collective register bank save for fast interrupt response. Its clock system supports PLL-synthesized 120 MHz ICLK with independent PCLKA/PCLKC domains enabling concurrent 120 MHz peripheral operation (GPTWa, MTU3d, HRPWM) and 60 MHz ADC timing (PCLKD).

Safety-critical operation is enabled by MPU-based memory protection, Trusted Memory (TM) for flash code isolation, register write protection, and dedicated IWDT with 120 kHz oscillator. The ELC allows event-triggered peripheral coordination without CPU intervention-critical for deterministic motor control loop timing and fault response.

Key Specifications

Pinout & Package

Package: PLQP0100KB-B - 100-pin Low-Profile Quad Flat Package, 14 mm × 14 mm body, 0.5 mm lead pitch, exposed thermal pad, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F526TACDFL#50, R5F526TADFL#50 offers lower memory capacity but identical package and peripheral set for legacy compatibility, while R5F566TEADFP#30 delivers higher performance and expanded connectivity at the cost of increased BOM and thermal design complexity.

Availability

R5F526TACDFL#50 is available at Aetrix Electronics and suitable for industrial motor drives, home appliance inverters, PLC I/O modules, and EV onboard chargers requiring stable component supply, long-term lifecycle support, and automotive-grade reliability.

Supply support for R5F526TACDFL#50 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 RX26T Group-including R5F526TACDFL#50-is engineered specifically for high-efficiency motor control in industrial and consumer inverters, integrating precision PWM, synchronized analog acquisition, and functional safety features into a single chip.

FAQ

What is the maximum operating frequency and CoreMark score of the R5F526TACDFL#50?

The R5F526TACDFL#50 operates at a maximum frequency of 120 MHz and achieves 709 CoreMark points under benchmark conditions. This performance stems from its RXv3 CPU core with single-cycle instruction execution, on-chip 32-bit multiplier/divider, and optimized memory subsystem enabling no-wait access to both 512 KB flash and 64 KB SRAM at full speed.

Does the R5F526TACDFL#50 support IEC60730 Class B compliance out of the box?

Yes, the R5F526TACDFL#50 includes hardware features required for IEC60730 Class B certification: oscillation-stop detection, A/D converter disconnection check, clock accuracy measurement circuit, independent watchdog timer (IWDT) with dedicated 120 kHz oscillator, RAM test-assisting function via DOC, and CRC calculator (CRCA). These reduce software validation effort and external component count.

What PWM resolution does the R5F526TACDFL#50 achieve, and how is it implemented?

The R5F526TACDFL#50 achieves a minimum PWM timing resolution of 260 ps using its High-Resolution PWM (HRPWM) circuit, which fine-tunes the edge timing of outputs from GPTW0–GPTW3. This is realized by injecting sub-cycle delays into the 120 MHz counter reference clock (PCLKC), enabling precise dead-time control critical for SiC/GaN-based inverters.

How many A/D converter channels does the R5F526TACDFL#50 support, and what is their synchronization capability?

The R5F526TACDFL#50 supports up to 22 channels across three independent 12-bit S12ADH units (Unit 0: 4 ch, Unit 1: 4 ch, Unit 2: 14 ch), all capable of simultaneous sampling triggered by shared hardware events (e.g., MTU/GPTW compare match). This enables true synchronous current/voltage acquisition essential for vector control algorithms.

What security features are integrated into the R5F526TACDFL#50 for firmware protection?

The R5F526TACDFL#50 integrates Trusted Secure IP Lite, including AES-128/256 encryption engines (ECB/CBC/GCM), a true random number generator (TRNG), secure key management, and Trusted Memory (TM) that restricts instruction fetch to protected code flash regions. These features enable secure boot, encrypted firmware updates, and tamper-resistant key storage.