Renesas R5F526TBDGNE#50

Overview

R5F526TBDGNE#50 from Renesas is a 32-bit RXv3 microcontroller optimized for motor control and industrial inverter applications, featuring a 120 MHz CPU core, 512 KB on-chip flash memory, 64 KB SRAM, 16 KB data flash, integrated CAN FD interface, and hardware-accelerated 3-phase complementary PWM generation with dead-time control - deployed in industrial servo drives and HVAC compressor controllers.

For engineers reviewing the R5F526TBDGNE#50 datasheet, R5F526TBDGNE#50 pinout, R5F526TBDGNE#50 application, or R5F526TBDGNE#50 equivalent, key selection considerations include its 100-pin LFQFP package, 120 MHz real-time PWM timing resolution (260 ps HRPWM), IEC60730-compliant safety features, dual-bank flash for safe firmware updates, and integrated analog peripherals including 12-bit ADC with simultaneous sampling across three units.

Technical Context

The R5F526TBDGNE#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 multiplication of external 8–24 MHz crystals or internal HOCO/LOCO sources to achieve 120 MHz ICLK, with independent PCLKA/PCLKC domains enabling concurrent high-speed peripheral operation (e.g., GPTWa at 120 MHz, MTU3d at 120 MHz, S12ADH at 60 MHz ADCLK).

Real-time motor control is enabled by tightly coupled peripherals: GPTWa (32-bit × 8 channels) and MTU3d (16-bit × 9 channels) support synchronized 3-phase complementary PWM with automatic dead-time insertion and phase-counting; HRPWM adds 260 ps timing resolution to GPTW0–GPTW3 outputs; ELC allows event-triggered peripheral chaining without CPU intervention - critical for deterministic current-loop execution in field-oriented control (FOC) systems.

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 R5F526TBDGNE#50, the R5F526TADGNE#50 reduces memory capacity while retaining identical motor control peripherals and safety features - ideal for scaled-down inverters; the R5F566TEBDFP#30 offers higher CPU performance and memory but lacks HRPWM precision and IEC60730 certification, making it suitable for non-safety-rated motion systems.

Availability

R5F526TBDGNE#50 is available at Aetrix Electronics and suitable for industrial servo drives, HVAC compressor controllers, EV onboard chargers, and PLC I/O modules requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for R5F526TBDGNE#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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, and power devices for automotive, industrial, and IoT markets.

The RX26T Group is designed specifically for high-efficiency motor control in industrial inverters and appliances, integrating precision PWM, simultaneous sampling ADC, and functional safety features to replace discrete timing and protection circuits.

FAQ

What is the maximum operating frequency and CoreMark score of the R5F526TBDGNE#50?

The R5F526TBDGNE#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 barrel shifter - enabling deterministic real-time loop execution in motor control firmware. The R5F526TBDGNE#50 sustains this speed across all memory and peripheral accesses due to no-wait 120 MHz flash and SRAM interfaces.

Does the R5F526TBDGNE#50 support IEC60730 Class B compliance for household appliance control?

Yes, the R5F526TBDGNE#50 includes dedicated hardware features for IEC60730 Class B compliance: oscillation-stoppage detection, RAM test-assisting function using DOC, CRC calculator (CRCA), register write protection, self-diagnostic ADC, and analog input disconnection detection. These capabilities are documented in the R01DS0407EJ0120 datasheet and enable certified safety firmware implementation without external monitoring ICs - a key requirement for R5F526TBDGNE#50 deployments in washing machines and refrigerators.

What PWM resolution does the R5F526TBDGNE#50 provide, and how is it achieved?

The R5F526TBDGNE#50 delivers a minimum PWM timing resolution of 260 ps via its High-Resolution PWM (HRPWM) circuit, which controls the rising/falling edges of GPTW0–GPTW3 outputs. This resolution is realized by leveraging the 120 MHz system clock domain and internal fractional delay logic - not by oversampling or software interpolation. The R5F526TBDGNE#50 uses this capability to implement precise dead-time tuning for SiC/GaN gate drivers, directly improving inverter efficiency and EMI performance.

How many analog-to-digital converter channels does the R5F526TBDGNE#50 support, and what sampling architecture is used?

The R5F526TBDGNE#50 integrates a 12-bit S12ADH ADC with three independent sample-and-hold units: Unit 0 (4 channels), Unit 1 (4 channels), and Unit 2 (14 channels), totaling 22 configurable inputs. It supports simultaneous sampling across all three units - critical for capturing phase currents and DC-link voltage at identical instants in motor control. Each unit has dedicated sample-and-hold circuits, and conversion time is 0.9 µs per channel when ADCLK runs at 60 MHz - a specification confirmed in the R5F526TBDGNE#50 datasheet.

What package type and pin count does the R5F526TBDGNE#50 use, and is it RoHS compliant?

The R5F526TBDGNE#50 uses the PLQP0100KB-B package: a 100-pin Low-profile Quad Flat Package with 14 mm × 14 mm body size, 0.5 mm lead pitch, and exposed thermal pad. It is RoHS compliant and rated for operation from –40°C to +85°C (D-version). This package provides full access to all 82 general-purpose I/O pins, including 5-V tolerant inputs and large-current outputs, as specified in the R5F526TBDGNE#50 datasheet section "I/O ports for the 100-pin LFQFP".