Renesas R5F526TFCGFM#50

Overview

R5F526TFCGFM#50 from Renesas is a 32-bit RXv3 microcontroller optimized for motor control and industrial inverter applications, featuring a 120 MHz CPU core delivering 709 CoreMark, 512 KB on-chip code flash memory with dual-bank operation, 64 KB SRAM, 16 KB data flash (100,000 write cycles), and integrated CAN FD interface compliant with ISO 11898-1:2015.

For engineers reviewing the R5F526TFCGFM#50 datasheet, R5F526TFCGFM#50 pinout, R5F526TFCGFM#50 application, or R5F526TFCGFM#50 equivalent, key selection considerations include its 3-phase/5-phase complementary PWM capability, 260 ps high-resolution PWM timing control, IEC60730 safety support, and 100-pin LFQFP package with 82 general-purpose I/O pins including 5-V tolerant inputs and large-current outputs.

Technical Context

The R5F526TFCGFM#50 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/C/D at up to 60–120 MHz).

Motor control is enabled by tightly coupled peripherals: GPTWa (8-channel 32-bit timer) and MTU3d (9-channel 16-bit timer) support synchronous PWM generation, dead-time insertion, and phase-counting; HRPWM provides 260 ps resolution timing control on four channels; S12ADH includes three 12-bit A/D units with simultaneous sampling across 22 channels (Unit 0: 4 ch × 3 SH, Unit 1: 4 ch × 3 SH, Unit 2: 14 ch); CMPCa offers six analog comparators with programmable reference selection.

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.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F526TFCGFM#50, the R5F526TDDGFM#50 offers identical packaging and peripheral integration at lower memory capacity-ideal for scaled-down implementations-while the R5F566TEBGFM#50 delivers significantly higher processing headroom and memory scalability but requires PCB and firmware redesign due to architectural differences.

Availability

R5F526TFCGFM#50 is available at Aetrix Electronics and suitable for industrial motor drives, home appliance inverters, PLC I/O modules, and renewable energy converters requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for R5F526TFCGFM#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 R5F526TFCGFM#50, is engineered specifically for high-performance motor control and inverter applications, integrating precision PWM, safety-certified peripherals, and real-time processing capabilities in a single chip.

FAQ

What is the maximum operating frequency and CoreMark score of the R5F526TFCGFM#50?

The R5F526TFCGFM#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, on-chip FPU, and efficient memory subsystem enabling deterministic real-time motor control loop execution. The R5F526TFCGFM#50 sustains this speed across its 512 KB code flash and 64 KB SRAM with zero wait states.

Does the R5F526TFCGFM#50 support IEC60730 Class B compliance out of the box?

Yes, the R5F526TFCGFM#50 includes dedicated hardware features for IEC60730 Class B compliance: oscillation-stoppage detection, A/D converter self-diagnostic and disconnection detection, clock frequency accuracy measurement, independent watchdog timer (IWDTa), RAM test-assisting function using DOC, CRCA for data integrity, and register write protection. These are implemented in silicon and require no external components to meet baseline functional safety requirements.

What PWM configurations does the R5F526TFCGFM#50 support for 3-phase inverter control?

The R5F526TFCGFM#50 supports multiple 3-phase PWM modes through its GPTWa and MTU3d timers: up to 3 output channels in 3-phase complementary PWM mode with automatic dead-time insertion, reset-synchronized PWM for synchronized switching across phases, and phase-counting mode for encoder-based position feedback. The HRPWM circuit further refines timing with 260 ps resolution on selected channels, critical for minimizing shoot-through in SiC/GaN gate drivers.

How many A/D converter channels does the R5F526TFCGFM#50 provide, and what sampling capability does it offer?

The R5F526TFCGFM#50 includes three 12-bit A/D units (S12ADH): Unit 0 (4 channels with 3 sample-and-hold circuits), Unit 1 (4 channels with 3 sample-and-hold circuits), and Unit 2 (14 channels), totaling 22 configurable inputs. It supports simultaneous sampling across all three units, enabling concurrent acquisition of motor phase currents and DC-link voltage within a single conversion cycle-essential for accurate current reconstruction in FOC algorithms.

Is the R5F526TFCGFM#50 pin-compatible with other RX26T group MCUs in the same package?

Yes, the R5F526TFCGFM#50 is pin-compatible with other RX26T devices in the 100-pin LFQFP (PLQP0100KB-B) package, including R5F526TDDGFM#50 and R5F526TEAGFM#50. All share identical pin assignments for power, reset, clocks, I/O, and peripheral interfaces. Differences lie in internal memory size and peripheral enablement-not pinout-allowing drop-in replacement where firmware and memory requirements align.