Renesas R5F526TBBDND#30

Overview

R5F526TBBDND#30 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 R5F526TBBDND#30 datasheet, R5F526TBBDND#30 pinout, R5F526TBBDND#30 application, or R5F526TBBDND#30 equivalent, this MCU delivers deterministic real-time control for brushless DC and permanent magnet synchronous motor drives, with IEC60730-compliant safety features, dual-bank flash for safe firmware updates, and high-resolution PWM synchronized to analog acquisition.

Technical Context

The R5F526TBBDND#30 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. It integrates dedicated motor control peripherals including GPTWa (32-bit × 8 channels), MTU3d (16-bit × 9 channels), HRPWM (4 channels), and S12ADH (three 12-bit A/D units supporting simultaneous sampling).

Clock architecture supports independent domain scaling: ICLK up to 120 MHz for CPU/core logic, PCLKA up to 120 MHz for timers and CAN FD, PCLKC up to 120 MHz for HRPWM reference, and PCLKD up to 60 MHz for A/D conversion. The ELC enables CPU-free inter-module event chaining-e.g., MTU trigger → A/D start → CRCA checksum → DTC transfer-critical for deterministic motor control loops.

Key Specifications

Pinout & Package

Package: PLQP0100KB-B - 100-pin Low-profile Quad Flat Package (LFQFP), 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 R5F526TBBDFP#30, the R5F526TBBDND#30 provides 20 additional GPIOs and full 100-pin routing flexibility for complex sensor fusion; compared with R5F523T7DDFK#30, it delivers 3× higher CPU throughput, hardware trigonometry acceleration, and sub-nanosecond PWM timing essential for high-fidelity motor control.

Availability

R5F526TBBDND#30 is available at Aetrix Electronics and suitable for industrial motor drives, home appliance inverters, automotive auxiliary systems, and PLC-based motion control requiring stable component supply and long-term production continuity.

Supply support for R5F526TBBDND#30 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 industrial, automotive, and IoT markets.

The RX26T Group-including R5F526TBBDND#30-is designed specifically for high-performance motor control in industrial inverters and home appliances, integrating precision PWM, simultaneous A/D, safety features, and CAN FD connectivity into a single chip.

FAQ

What is the maximum operating frequency and CoreMark score of the R5F526TBBDND#30?

The R5F526TBBDND#30 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, and barrel shifter-enabling real-time execution of complex motor control algorithms without external co-processors. The R5F526TBBDND#30 sustains this speed across its full 512 KB flash and 64 KB SRAM with zero wait states.

Does the R5F526TBBDND#30 support IEC60730 Class B compliance out of the box?

Yes, the R5F526TBBDND#30 includes hardware features explicitly designed for IEC60730 Class B compliance: oscillation-stoppage detection, RAM test-assisting function via DOC, CRCA for data integrity, register write protection, and self-diagnostic A/D functions. These are documented in the R01DS0407EJ0120 datasheet and require no external components. The R5F526TBBDND#30 implements these features natively to simplify safety certification for industrial and appliance applications.

What PWM resolution does the R5F526TBBDND#30 achieve, and how is it used in motor control?

The R5F526TBBDND#30 achieves a minimum PWM edge placement resolution of 260 ps using its HRPWM circuit, synchronized to the 120 MHz GPTWa timer. This enables precise dead-time insertion, phase-shift control, and current-loop timing critical for field-oriented control of BLDC and PMSM motors. The R5F526TBBDND#30 uses this capability to minimize torque ripple and electromagnetic interference in high-efficiency inverter designs.

How many A/D converter channels does the R5F526TBBDND#30 support, and what is their sampling capability?

The R5F526TBBDND#30 supports up to 23 analog input channels across three independent 12-bit A/D units (S12ADH), with simultaneous sampling across all units. Minimum conversion time is 0.9 µs per channel at 60 MHz ADCLK. This allows synchronized acquisition of three-phase currents and DC bus voltage within a single control cycle-essential for accurate vector control. The R5F526TBBDND#30's A/D architecture directly supports this deterministic, multi-channel sampling without CPU overhead.

What communication interfaces are integrated into the R5F526TBBDND#30, and which support high-speed operation?

The R5F526TBBDND#30 integrates CAN FD (up to 5 Mbps), two RSPI interfaces (RSPId up to 30 Mbps, RSPIA with TI SSP protocol), I2C (400 kbps fast mode), I3C (SDR mode), and multiple SCI/RSCI channels with LIN and Manchester encoding support. CAN FD and RSPI are the highest-speed interfaces-used for real-time motor status reporting and high-bandwidth peripheral interfacing respectively. All are accessible via the R5F526TBBDND#30's 100-pin package with dedicated signal routing.