Renesas R5F526TFBDND#50

Overview

R5F526TFBDND#50 from Renesas is a 32-bit RXv3 microcontroller optimized for motor control and industrial inverter applications, featuring 120 MHz operation, 512 KB on-chip code flash, 64 KB SRAM, 16 KB data flash, integrated CAN FD interface, and hardware-accelerated 3-phase/5-phase complementary PWM generation with 260 ps timing resolution.

For engineers reviewing the R5F526TFBDND#50 datasheet, R5F526TFBDND#50 pinout, R5F526TFBDND#50 application, or R5F526TFBDND#50 equivalent, key selection considerations include its dual-bank flash architecture for safe firmware updates, IEC60730-compliant safety features (oscillation-stop detection, RAM test assist, CRC), and dedicated HRPWM circuitry enabling precise dead-time control in high-efficiency motor drives.

Technical Context

The R5F526TFBDND#50 implements the RXv3 CPU core with single-cycle instruction execution at 120 MHz, supporting IEEE 754-compliant single-precision FPU and 113 instructions including DSP extensions. Its memory subsystem includes dual-bank 512 KB flash (enabling background programming during execution) and 64 KB zero-wait SRAM with SED error detection.

Timing and control are managed through three synchronized clock domains: ICLK (up to 120 MHz for CPU), PCLKA (up to 120 MHz for MTU/GPTW/HRPWM), and PCLKD (up to 60 MHz for A/D conversion). The ELC enables event-triggered peripheral coordination without CPU intervention-critical for deterministic motor control loops.

Key Specifications

Pinout & Package

Package: PLQP0100KB-B - 100-pin Low-profile Quad Flat Package, 14 × 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 R5F526TFBDND#50, the R5F526TDDFD#50 reduces package size and memory but retains identical PWM timing resolution and safety features, while the R5F566TEBDFP#30 delivers higher clock speed and expanded peripheral bandwidth at the cost of increased power and BOM cost-making it suitable for premium-tier industrial drives.

Availability

R5F526TFBDND#50 is available at Aetrix Electronics and suitable for industrial motor drives, home appliance inverters, automotive body electronics, and PLC I/O modules requiring stable component supply, long-term lifecycle support, and IEC60730-compliant safety certification.

Supply support for R5F526TFBDND#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 R5F526TFBDND#50-is engineered specifically for high-precision motor control, integrating advanced PWM, analog sensing, and functional safety features to replace discrete motor control ICs in inverter systems.

FAQ

What is the maximum operating frequency and CoreMark score of the R5F526TFBDND#50?

The R5F526TFBDND#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 FPU, and zero-wait 64 KB SRAM-enabling deterministic real-time motor control loops with sub-microsecond latency. The R5F526TFBDND#50 maintains this speed across its full operating voltage range (2.7–5.5 V).

Does the R5F526TFBDND#50 support IEC60730 Class B compliance for household appliances?

Yes, the R5F526TFBDND#50 includes dedicated hardware features required for IEC60730 Class B compliance: oscillation-stop detection for main clock failure, self-diagnostic A/D converter with disconnection detection, independent watchdog timer (IWDT) with window function, CRC calculator (CRCA), RAM test assist via DOC, and register write protection. These are documented in Renesas Application Note R01AN3927JJ0100 and validated per the R5F526TFBDND#50 datasheet Rev.1.20.

What PWM resolution does the R5F526TFBDND#50 achieve, and how is it implemented?

The R5F526TFBDND#50 achieves a minimum PWM timing resolution of 260 ps using its dedicated High-Resolution PWM (HRPWM) circuit, which controls rising/falling edges of GPTW0–GPTW3 outputs. This is realized by feeding the 120 MHz system clock into a fine-grained delay chain-enabling precise dead-time adjustment critical for SiC/GaN inverter gate drivers. The R5F526TFBDND#50's HRPWM operates independently of the base GPTWa counter, ensuring jitter-free edge placement.

How many analog-to-digital converter (ADC) channels does the R5F526TFBDND#50 support, and what is their configuration?

The R5F526TFBDND#50 integrates the S12ADH 12-bit ADC with 22 total input channels distributed across three units: Unit 0 (4 channels, 3 sample-and-hold circuits), Unit 1 (4 channels, 3 sample-and-hold circuits), and Unit 2 (14 channels). It supports simultaneous sampling across all three units, scan modes (single/continuous/3-group), and hardware-triggered conversion via MTU/GPTW events-essential for synchronized current/voltage acquisition in motor control. The R5F526TFBDND#50 also includes programmable gain amplifiers on Units 0 and 1.

What communication interfaces are integrated into the R5F526TFBDND#50, and which support high-speed protocols?

The R5F526TFBDND#50 integrates CAN FD (ISO 11898-1:2015 compliant), 4× SCI, 3× RSCI (with Manchester encoding and HBS), RIICa (I²C/SMBus, up to 400 kbps), RI3C (I3C SDR), RSPId (SPI, up to 30 Mbps), and RSPIA (TI SSP-compatible SPI). CAN FD and RSPId deliver the highest bandwidth-supporting real-time diagnostics and high-speed peripheral bridging in industrial networks. All interfaces support ELC event linking for CPU-free coordination.