Renesas R5F526TBCDND#50

Overview

R5F526TBCDND#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, CAN FD interface, and integrated 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 R5F526TBCDND#50 datasheet, R5F526TBCDND#50 pinout, R5F526TBCDND#50 application, or R5F526TBCDND#50 equivalent, key selection criteria include its 3-phase/5-phase complementary PWM capability, dual-bank flash for safe firmware updates, on-chip Trusted Secure IP Lite encryption, and dedicated analog peripherals (12-bit ADC with simultaneous sampling, 6-channel comparator, 2-channel DAC) for real-time motor feedback loops.

Technical Context

The R5F526TBCDND#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-critical for deterministic motor control ISR latency. Its clock system integrates PLL, HOCO/LOCO oscillators, and independent IWDT clock, enabling precise timing synchronization across GPTWa (120 MHz), MTU3d (120 MHz PCLKA), and HRPWM (260 ps resolution).

Peripheral co-processing is enabled via ELC (183 internal event signals), allowing autonomous inter-module triggering-e.g., MTU3d PWM edge events directly initiating A/D conversion without CPU intervention-while DMACAa (8-channel) and DTCb handle background data movement for sensor fusion and communication stacks.

Key Specifications

Pinout & Package

Package: PLQP0100KB-B - 100-pin Low-Profile Quad Flat Package (LFQFP), 14 × 14 mm body, 0.5 mm 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 R5F526TBCDND#50, R5F526TADND#50 reduces memory capacity but maintains identical peripheral sets and safety features-ideal for scaled-down variants-while R5F566TEBDFP#30 delivers higher CPU throughput and expanded timer resources for advanced motion control, albeit with increased power consumption and cost.

Availability

R5F526TBCDND#50 is available at Aetrix Electronics and suitable for industrial motor drives, home appliance inverters, automotive auxiliary systems, and PLC I/O modules requiring stable component supply, long-term lifecycle assurance, and full traceability.

Supply support for R5F526TBCDND#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 R5F526TBCDND#50-is engineered specifically for high-efficiency motor control, integrating precision PWM, real-time analog acquisition, and functional safety features into a single chip for inverter and drive applications.

FAQ

What is the maximum operating frequency and CoreMark score of the R5F526TBCDND#50?

The R5F526TBCDND#50 operates at a maximum frequency of 120 MHz and achieves 709 CoreMark performance. This score reflects its RXv3 CPU core efficiency, including single-cycle instruction execution, 32-bit multiplier/divider, and barrel shifter-enabling deterministic execution of complex motor control algorithms within tight timing budgets. The R5F526TBCDND#50 sustains this performance across its full operating temperature range (–40°C to +85°C).

Does the R5F526TBCDND#50 support CAN FD, and what standard does it comply with?

Yes, the R5F526TBCDND#50 integrates a CAN FD module compliant with ISO11898-1:2015, supporting both standard and extended frames. It enables data rates up to 5 Mbps in FD mode for high-bandwidth control messaging in industrial networks and automotive subsystems. The R5F526TBCDND#50 implements full protocol handling-including bit rate switching, CRC calculation, and error confinement-without CPU intervention via dedicated hardware.

How many A/D converter channels does the R5F526TBCDND#50 support, and what sampling architecture does it use?

The R5F526TBCDND#50 supports 23 total 12-bit A/D converter channels across three S12ADH units: Unit 0 (4 channels), Unit 1 (4 channels), and Unit 2 (14 channels), each with dedicated sample-and-hold circuits. This architecture enables true simultaneous sampling across all three units-critical for field-oriented control where phase current and DC-link voltage must be captured at identical instants. The R5F526TBCDND#50 achieves 0.9 µs minimum conversion time per channel at 60 MHz ADCLK.

What is the resolution and timing capability of the High-Resolution PWM (HRPWM) in the R5F526TBCDND#50?

The R5F526TBCDND#50 features 4-channel HRPWM capable of controlling the rising/falling edges of GPTWa-generated PWM waveforms with a minimum resolution of 260 ps at 120 MHz operation. This sub-nanosecond timing precision allows fine-grained dead-time adjustment for SiC and GaN power devices, minimizing shoot-through risk while maximizing efficiency. The R5F526TBCDND#50 applies HRPWM exclusively to GPTW0–GPTW3 outputs, preserving deterministic behavior in safety-critical motor control loops.

Is the R5F526TBCDND#50 qualified for functional safety standards like IEC60730?

Yes, the R5F526TBCDND#50 includes dedicated hardware features for IEC60730 Class B compliance: oscillation-stoppage detection, self-diagnostic A/D converter disconnection detection, clock accuracy measurement circuit, independent watchdog timer (IWDTa), RAM test-assisting function (DOC), and CRC calculator (CRCA). These capabilities-documented in Renesas' Functional Safety Manual for RX26T-are integral to the R5F526TBCDND#50 silicon and require no external components to achieve certified compliance.