Renesas R5F566NNDGBG#20

Overview

R5F566NNDGBG#20 from Renesas is a 160-MHz 32-bit RXv3 core MCU optimized for industrial motor control and power conversion systems. It integrates 1 MB code flash, 128 KB SRAM (no wait states), 32 KB data flash (100k erase/write cycles), dual 12-bit DACs, six-channel analog comparators, and high-resolution PWM with 195 ps timing resolution. It serves as the real-time control engine in servo drives and inverters requiring precise phase-aligned waveform generation.

For engineers reviewing the R5F566NNDGBG#20 datasheet, R5F566NNDGBG#20 pinout, R5F566NNDGBG#20 application, or R5F566NNDGBG#20 equivalent, key selection criteria include its 144-pin LFQFP package with 110 GPIOs (4× 5-V tolerant), integrated CAN 2.0B interface, USB 2.0 FS host/function/OTG support, and IEC60730-compliant safety features including CAC, CRCA, and register write protection.

Technical Context

The R5F566NNDGBG#20 implements the RXv3 CPU core with IEEE 754-compliant single-precision FPU, executing at up to 160 MHz with 928 CoreMark performance. Its clock system supports PLL multiplication using either an external 8–24 MHz crystal or internal 16/18/20 MHz HOCO, enabling independent peripheral clock domains (PCLKA up to 120 MHz, PCLKC up to 160 MHz) for deterministic timer and ADC timing.

It features tightly coupled hardware acceleration for motor control: ten 32-bit GPTW timers support single-/3-/5-phase complementary PWM with programmable dead time, while four HRPWM channels refine edge placement down to 195 ps resolution. The ELC enables event-triggered peripheral coordination without CPU intervention-critical for synchronized A/D sampling, PWM updates, and fault response in real-time power stages.

Key Specifications

Pinout & Package

Package: PLQP0144KA-B - 144-pin Low-profile Quad Flat Package, 20 × 20 mm body, 0.5 mm 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 R5F566NNDGBG#20, the R5F566NNDFB#30 trades USB and GPIO count for smaller footprint and lower cost, while the R5F566TNDGBG#20 retains identical package and timing but reduces flash/SRAM-making it viable for legacy algorithm porting where memory headroom is sufficient.

Availability

R5F566NNDGBG#20 is available at Aetrix Electronics and suitable for industrial servo drives, EV onboard chargers, solar microinverters, and uninterruptible power supplies requiring stable component supply, long-term lifecycle assurance, and automotive-grade temperature range (–40°C to +105°C).

Supply support for R5F566NNDGBG#20 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, and power devices for industrial, automotive, and IoT markets.

The RX66T Group is designed specifically for high-performance motor control and power conversion applications, integrating advanced PWM, analog sensing, and functional safety features to replace discrete DSP+FPGA solutions with a single-chip MCU.

FAQ

What is the maximum operating temperature rating for the R5F566NNDGBG#20?

The R5F566NNDGBG#20 is rated for operation from –40°C to +105°C (G-version). This extended temperature range supports deployment in under-hood automotive power electronics and industrial motor drives exposed to high ambient heat, validated across the full range with guaranteed 160 MHz operation and flash retention.

Does the R5F566NNDGBG#20 support USB device mode without external components?

Yes, the R5F566NNDGBG#20 integrates a full-speed USB 2.0 transceiver and 2 KB on-chip RAM buffer. It operates in device, host, or OTG mode without external PHY or pull-up resistors-only VBUS detection and standard USB DP/DM routing are required. This eliminates BOM cost and PCB area for external USB interface ICs.

How many independent PWM channels does the R5F566NNDGBG#20 provide for 3-phase inverter control?

The R5F566NNDGBG#20 provides ten 32-bit GPTW channels and nine 16-bit MTU3d channels, supporting up to 10 single-phase, 3 three-phase, or 2 five-phase complementary PWM outputs. All channels feature programmable dead time, synchronous start/stop, and fault shutdown via POE3B-enabling full-bridge, three-level, and matrix converter topologies.

Is the R5F566NNDGBG#20 qualified for IEC60730 Class B compliance?

Yes, the R5F566NNDGBG#20 includes hardware-assisted IEC60730 Class B features: clock accuracy measurement circuit (CAC), CRC calculator (CRCA), oscillation-stop detection, ADC disconnection check, RAM test assist (DOC), and register write protection. These are documented in the R01DS0315EJ0130 datasheet and supported by Renesas' Functional Safety Package.

What debugging interfaces are available on the R5F566NNDGBG#20?

The R5F566NNDGBG#20 supports both JTAG and single-wire FINE debugging interfaces. FINE uses only one pin (excluding power and ground), simplifying debug header design and enabling in-system programming on space-constrained boards-while JTAG provides full boundary-scan and multi-core debug capability for complex development environments.