Renesas R5F526TFDDFN#10

Overview

R5F526TFDDFN#10 from Renesas is a 32-bit RXv3 microcontroller optimized for motor control and power conversion, featuring a 120 MHz CPU core, 512 KB on-chip code flash, 64 KB SRAM, 16 KB data flash, integrated CAN FD interface, and high-resolution PWM with 260 ps timing resolution. It supports IEC60730 safety compliance and operates across –40°C to +85°C.

For engineers reviewing the R5F526TFDDFN#10 datasheet, R5F526TFDDFN#10 pinout, R5F526TFDDFN#10 application, or R5F526TFDDFN#10 equivalent, key selection considerations include its 100-pin QFN package, dual-bank flash for safe firmware updates, 3-phase/5-phase complementary PWM capability, hardware-accelerated trigonometric functions (TFUv2), and Trusted Secure IP Lite encryption engine.

Technical Context

The R5F526TFDDFN#10 implements the RXv3 CPU core with single-cycle instruction execution, IEEE 754-compliant single-precision FPU, and collective register bank save for fast context switching. Its clock system integrates PLL, HOCO (16/18/20 MHz), LOCO (240 kHz), and IWDT-dedicated 120 kHz oscillator - enabling independent peripheral clock domains (PCLKA up to 120 MHz, PCLKB up to 60 MHz).

Motor control is enabled by tightly coupled peripherals: GPTWa (32-bit × 8 channels) and MTU3d (16-bit × 9 channels) support synchronous PWM generation, dead-time insertion, and phase-counting; HRPWM provides 260 ps resolution for precise edge placement; S12ADH includes three 12-bit A/D units with simultaneous sampling and programmable gain amplifiers for current/voltage sensing.

Key Specifications

Pinout & Package

PWQN0064KF-A is a 64-pin, 9 × 9 mm, 0.5 mm pitch HWQFN package with exposed thermal pad. Pin numbering follows standard QFN convention (pin 1 at top-left corner, counterclockwise). All I/O pins support 5-V tolerance, pull-up, open-drain, and retention modes.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F526TFDDFN#10, the R5F526TADDFN#10 offers identical motor control peripherals in a lower-density memory variant, while the R5F566TEBDFN#10 delivers architectural upgrades for future-proofed systems - neither is pin-compatible, but both share the RXv3 instruction set and safety feature foundation.

Availability

R5F526TFDDFN#10 is available at Aetrix Electronics and suitable for industrial motor drives, automotive EPS systems, and home appliance inverters requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for R5F526TFDDFN#10 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 is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RX26T Group, including R5F526TFDDFN#10, is engineered specifically for high-performance motor control and power conversion applications - integrating precision PWM, real-time analog acquisition, and functional safety features in a single chip.

FAQ

What is the maximum operating frequency and CoreMark score of the R5F526TFDDFN#10?

The R5F526TFDDFN#10 operates at a maximum frequency of 120 MHz and achieves 709 CoreMark in benchmark testing. This performance stems from its RXv3 CPU core with single-cycle instruction execution, on-chip FPU, and efficient memory subsystem - enabling real-time execution of complex motor control algorithms such as field-oriented control (FOC) and sensorless estimation without latency bottlenecks. The R5F526TFDDFN#10 sustains this speed across its full 512 KB flash and 64 KB SRAM with no wait states.

Does the R5F526TFDDFN#10 support IEC60730 Class B compliance out of the box?

Yes, the R5F526TFDDFN#10 includes dedicated hardware features for IEC60730 Class B compliance: oscillation-stop detection, RAM test assist via DOC, CRC calculator (CRCA), register write protection, independent watchdog timer (IWDTa), and self-diagnostic A/D functions. These are documented in the R01DS0407EJ0120 datasheet and require no external components - though system-level validation (e.g., PCB layout, clock source stability) remains the designer's responsibility. The R5F526TFDDFN#10 is widely deployed in certified industrial drives and automotive subsystems.

What PWM resolution and channel count does the R5F526TFDDFN#10 provide for motor control?

The R5F526TFDDFN#10 delivers 4-channel high-resolution PWM (HRPWM) with a minimum timing resolution of 260 ps at 120 MHz operation, plus 10-channel single-phase, 3-channel 3-phase, and 2-channel 5-phase complementary PWM via GPTWa and MTU3d. This enables precise gate timing for SiC/GaN inverters, dead-time control down to sub-nanosecond accuracy, and flexible waveform generation for multi-phase motor topologies. All PWM outputs are hardware-linked to A/D triggers and fault protection logic within the R5F526TFDDFN#10.

Which package type and pin count does the R5F526TFDDFN#10 use?

The R5F526TFDDFN#10 uses the PWQN0064KF-A package: a 64-pin HWQFN measuring 9 × 9 mm with 0.5 mm pitch and an exposed thermal pad. This package supports 49 general-purpose I/O pins (including 2 × 5-V tolerant, 14 × large-current outputs), and is pin-compatible with other RX26T variants in the same footprint (e.g., R5F526TADDFN#10). The R5F526TFDDFN#10's pinout is fully documented in Section 2.2 of the R01DS0407EJ0120 datasheet.

Can the R5F526TFDDFN#10 execute secure firmware updates in the field?

Yes, the R5F526TFDDFN#10 supports secure, in-field firmware updates using its dual-bank flash architecture and Trusted Secure IP Lite. Firmware images can be programmed into the inactive bank via BGO (background operation) while the active bank continues real-time motor control. AES-128/256 encryption ensures image integrity, and Trusted Memory (TM) prevents unauthorized read-out of protected code sections. The R5F526TFDDFN#10's register write protection and MPU further safeguard update routines against corruption during power transitions or fault conditions.