Renesas R5F526TFDDFP#50

Overview

R5F526TFDDFP#50 from Renesas is a 32-bit RXv3 microcontroller optimized for motor control and industrial inverter applications, operating at up to 120 MHz with 709 CoreMark performance, integrated 512 KB code flash, 64 KB SRAM, 16 KB data flash, and hardware-accelerated 3-phase/5-phase complementary PWM generation. It features CAN FD, dual 12-bit ADC units (up to 22 channels), 6-channel analog comparator, 2-channel 12-bit DAC, and Trusted Secure IP Lite encryption.

For engineers reviewing the R5F526TFDDFP#50 datasheet, R5F526TFDDFP#50 pinout, R5F526TFDDFP#50 application, or R5F526TFDDFP#50 equivalent, key selection considerations include its 100-pin LFQFP package, 120 MHz HRPWM with 260 ps timing resolution, IEC60730 safety support, simultaneous sampling across three ADC units, and dedicated MTU3d/GPTWa timer architecture for real-time motor phase control.

Technical Context

The R5F526TFDDFP#50 implements the RXv3 CPU core with single-precision FPU, memory protection unit (MPU), and collective register bank save-enabling deterministic real-time response in safety-critical motor drives. Its clock system integrates PLL, 240-kHz LOCO, and 120-kHz IWDT-dedicated oscillator, with independent PCLKA (120 MHz), PCLKB (60 MHz), PCLKC (120 MHz), and PCLKD (60 MHz) domains for precise peripheral timing isolation.

Motor control execution relies on tightly coupled peripherals: MTU3d (9-channel 16-bit timer) and GPTWa (8-channel 32-bit timer) drive 3-phase/5-phase complementary PWM with automatic dead-time insertion and synchronous counter clearing; HRPWM refines edge placement down to 260 ps; ELC enables interrupt-free inter-module event chaining (e.g., timer-triggered ADC conversion without CPU intervention).

Key Specifications

Pinout & Package

Package: PLQP0100KB-B - 100-pin Low-profile Quad Flat Package (LFQFP), 14 mm × 14 mm body, 0.5 mm 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 R5F526TFDDFP#50, the R5F526TADDFP#50 offers lower memory and peripheral count in a smaller package for simpler drives, while the R5F566TEBDFP#50 trades RX26T's HRPWM and TFUv2 optimizations for raw CPU speed and memory scalability - making the R5F526TFDDFP#50 optimal for cost-constrained, high-precision 3-phase inverter designs.

Availability

R5F526TFDDFP#50 is available at Aetrix Electronics and suitable for industrial motor drives, home appliance inverters, automotive auxiliary systems, and industrial PLC I/O modules requiring stable component supply, long-term lifecycle support, and full traceability.

Supply support for R5F526TFDDFP#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 R5F526TFDDFP#50, was designed specifically for high-efficiency, high-precision motor control in industrial and consumer inverters - integrating specialized timers, analog peripherals, and safety features into a single chip.

FAQ

What is the maximum operating frequency and CoreMark score of the R5F526TFDDFP#50?

The R5F526TFDDFP#50 operates at a maximum frequency of 120 MHz and achieves 709 CoreMark performance. This benchmark reflects its RXv3 CPU core efficiency with FPU and instruction-level parallelism. The R5F526TFDDFP#50 sustains this performance across its full temperature range (–40°C to +85°C) with no wait states on code flash access, enabling deterministic real-time motor control loop execution.

Does the R5F526TFDDFP#50 support IEC60730 Class B compliance out of the box?

Yes, the R5F526TFDDFP#50 includes hardware features required for IEC60730 Class B compliance: oscillation-stop detection, RAM test assistance via DOC, ADC disconnection detection, clock accuracy measurement circuit, independent watchdog timer (IWDTa), and register write protection. These are documented in the R01DS0407EJ0120 datasheet and enable certified implementations without external components - though final system-level validation remains the designer's responsibility for R5F526TFDDFP#50.

How many ADC channels does the R5F526TFDDFP#50 support, and what is the sampling capability?

The R5F526TFDDFP#50 supports up to 22 channels across three 12-bit S12ADH units: Unit 0 (4 channels), Unit 1 (4 channels), and Unit 2 (14 channels), all with dedicated sample-and-hold circuits. It achieves minimum conversion time of 0.9 µs per channel at 60 MHz ADCLK and supports simultaneous sampling across units - a capability critical for vector-controlled motor drives where phase current and DC-link voltage must be captured concurrently within one PWM period.

What PWM resolution and modes are supported by the R5F526TFDDFP#50 for motor control?

The R5F526TFDDFP#50 supports 10 single-phase, 3 three-phase, and 2 five-phase complementary PWM outputs via GPTWa and MTU3d timers, plus 4-channel HRPWM with minimum 260 ps edge placement resolution at 120 MHz. It enables dead-time insertion, synchronous counter clearing, and phase-counting mode - allowing precise implementation of space-vector modulation and field-oriented control algorithms directly in hardware without CPU intervention.

Is CAN FD supported on the R5F526TFDDFP#50, and what standard does it comply with?

Yes, the R5F526TFDDFP#50 integrates one CAN FD module compliant with ISO 11898-1:2015, supporting both standard and extended frames with data rates up to 5 Mbps. It includes message filtering, FIFO buffering, and error confinement features - enabling robust real-time communication between motor controllers and higher-level ECUs in industrial and automotive systems using the R5F526TFDDFP#50.