Renesas R5F526TFBDFM#50

Overview

R5F526TFBDFM#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 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 R5F526TFBDFM#50 datasheet, R5F526TFBDFM#50 pinout, R5F526TFBDFM#50 application, or R5F526TFBDFM#50 equivalent, key selection criteria include its 100-pin LFQFP package, dual-bank flash architecture enabling background programming, IEC60730-compliant safety features (IWDT, oscillation-stop detection, RAM test assist), and dedicated HRPWM circuit for high-precision inverter gate driving.

Technical Context

The R5F526TFBDFM#50 implements the RXv3 CPU core with single-cycle instruction execution, 113 instructions, IEEE 754-compliant single-precision FPU, and collective register bank save for fast context switching. Its clock system integrates an 8–24 MHz external crystal oscillator, 240 kHz LOCO, 16/18/20 MHz HOCO, and PLL for 120 MHz system operation.

Peripheral synchronization is segmented across four clock domains: ICLK (up to 120 MHz for CPU), PCLKA (up to 120 MHz for MTU/GPTW/HRPWM/CAN FD), PCLKB (up to 60 MHz for SCI/RSCI/RIIC), and PCLKD (up to 60 MHz for S12ADH). The ELC enables 183 internal event signals to trigger module operations without CPU intervention-critical for deterministic motor control timing.

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 R5F526TFBDFM#50, the R5F526TDDFM#50 offers identical peripheral architecture in a smaller footprint but sacrifices 256 KB flash and 16 KB SRAM-suitable for scaled-down implementations. The R5F523T5DDFM#30 lacks HRPWM and Trusted Secure IP Lite, making it unsuitable for safety-critical or high-precision inverter designs requiring sub-nanosecond timing control.

Availability

R5F526TFBDFM#50 is available at Aetrix Electronics and suitable for industrial motor drives, home appliance inverters, and renewable energy converters requiring stable component supply, long-term lifecycle support, and traceable sourcing for safety-certified production.

Supply support for R5F526TFBDFM#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 headquartered in Tokyo, Japan, specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RX26T Group-including R5F526TFBDFM#50-is designed specifically for high-performance, safety-compliant motor control in industrial and consumer inverters, integrating hardware acceleration for FOC, robust PWM timing, and IEC60730-ready diagnostics.

FAQ

What is the maximum operating frequency and CoreMark score of the R5F526TFBDFM#50?

The R5F526TFBDFM#50 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, 32-bit multiplier/divider, barrel shifter, and IEEE 754-compliant FPU-all verified in the official R01DS0407EJ0120 datasheet Rev.1.20. The R5F526TFBDFM#50 sustains this speed with no-wait access to both 512 KB flash and 64 KB SRAM.

Does the R5F526TFBDFM#50 support IEC60730 Class B compliance out of the box?

Yes, the R5F526TFBDFM#50 includes multiple hardware features required for IEC60730 Class B certification: independent watchdog timer (IWDT) with window function, main clock oscillation stop detection, ADC self-diagnostic and disconnection detection, RAM test assist via DOC, CRCA engine, memory protection unit (MPU), and register write protection. These are documented in Section 1.1 and Section 22 of the R01DS0407EJ0120 datasheet and require no external components to implement basic safety checks.

What PWM resolution does the R5F526TFBDFM#50 achieve, and how is it implemented?

The R5F526TFBDFM#50 achieves a minimum PWM timing resolution of 260 ps using its dedicated High-Resolution PWM (HRPWM) circuit, which fine-tunes the rising/falling edges of outputs from the 32-bit GPTWa timers. This capability is active only on GPTW0–GPTW3 channels and requires operation at 120 MHz. The value is derived from the 120 MHz clock period (8.33 ns) divided by 32 steps per cycle-confirmed in Table 1.1 and Section 18.4 of the R01DS0407EJ0120 datasheet.

Which package and pin count does the R5F526TFBDFM#50 use?

The R5F526TFBDFM#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 provides 82 general-purpose I/O pins, including 2 × 5-V-tolerant inputs and 15 large-current outputs-details confirmed in Table 1.2 and "Package Information" section of the R01DS0407EJ0120 datasheet.

What analog peripherals are integrated into the R5F526TFBDFM#50?

The R5F526TFBDFM#50 integrates a 12-bit S12ADH ADC with 22 total channels (4+4+14), distributed across three sample-and-hold units; a 6-channel CMPCa analog comparator with selectable reference and input sources; and a 2-channel 12-bit R12DAb DAC usable as a comparator reference voltage. All are specified for operation across the full –40°C to +85°C temperature range and support event linking via ELC-per Sections 19, 20, and 21 of R01DS0407EJ0120.