Renesas R5F72866N100FA#U2

Overview

R5F72866N100FA#U2 from Renesas Electronics is a 32-bit SuperH RISC microcontroller in the SH7280 Group, featuring 1 MB on-chip Flash memory, 128 KB RAM, and integrated peripherals including USB 2.0 FS host/device controller, CAN controller, and multiple serial interfaces (SCI, I²C, SPI). It operates at up to 100 MHz and targets industrial control and automotive body electronics applications.

For engineers reviewing the R5F72866N100FA#U2 datasheet, R5F72866N100FA#U2 pinout, R5F72866N100FA#U2 application, or R5F72866N100FA#U2 equivalent, key selection considerations include its 100-pin LQFP package, 3.3 V core/io supply, CAN 2.0B compliance, USB transceiver with internal PHY, and support for real-time OS environments with MPU and interrupt nesting capability.

Technical Context

The R5F72866N100FA#U2 implements the SH-2A CPU core with FPU extension, supporting 32-bit integer and single-precision floating-point operations. Its system architecture integrates a multi-layer bus matrix, on-chip debug support (JTAG/ICD), and configurable clock domains via the CPG module-including PLL-based core clock generation and independent peripheral clock dividers.

Peripheral integration includes dual CAN controllers with message RAM and FIFOs, a 12-bit 24-channel ADC with hardware trigger synchronization, and a 16-bit MTU2S timer unit with complementary PWM output capability. All peripherals are memory-mapped and accessible via 32-bit AHB/APB bridges with configurable wait states and burst transfer support.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 32-bit microcontroller applications.

Compared with R5F72866N100FA#U2, the R5F72865N100FA#U2 reduces memory and removes USB PHY for lower-cost implementations, while the R5F72867N100FA#U2 adds Ethernet and CAN capacity at higher pin utilization - choice depends on interface prioritization and BOM constraints.

Availability

R5F72866N100FA#U2 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O modules, and smart power distribution units requiring stable component supply, long-term lifecycle assurance, and full traceability.

Supply support for R5F72866N100FA#U2 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 solutions for automotive, industrial, and IoT markets.

The SH7280 Group, including R5F72866N100FA#U2, was designed for real-time embedded control in safety-critical automotive and industrial systems, emphasizing integrated connectivity (CAN/USB), deterministic timing, and functional safety readiness.

FAQ

What is the maximum operating frequency of the R5F72866N100FA#U2?

The R5F72866N100FA#U2 operates at a maximum CPU frequency of 100 MHz using its on-chip PLL. This frequency is achieved with an external 8–20 MHz crystal connected to XTAL/EXTAL pins and configured via the Frequency Control Register (FRQCR). The core maintains timing compliance across the full industrial temperature range (−40°C to +85°C) when supplied with 3.3 V ±10%.

Does the R5F72866N100FA#U2 include an integrated USB physical layer?

Yes, the R5F72866N100FA#U2 includes a fully integrated USB 2.0 Full-Speed physical layer (PHY) with internal termination resistors and automatic line-state detection. This eliminates the need for an external USB transceiver and supports both host and device modes. The USB_DP and USB_DM pins connect directly to the USB connector, and the internal PHY complies with USB-IF electrical specifications.

How many CAN controllers does the R5F72866N100FA#U2 support?

The R5F72866N100FA#U2 integrates two independent CAN 2.0B-compliant controllers (CAN0 and CAN1), each with dedicated message RAM, acceptance filters, and FIFO buffers. Both controllers support bit rates up to 1 Mbps and operate autonomously with DMA-assisted message handling. They share no register conflicts and can be used simultaneously for gateway or redundancy applications.

What debug interface does the R5F72866N100FA#U2 provide?

The R5F72866N100FA#U2 provides a JTAG-compliant on-chip debug interface supporting real-time trace, hardware breakpoints, watchpoints, and memory inspection. It is fully compatible with Renesas E2 studio and third-party debuggers using the standard JTAG TAP controller. Debug access remains available even during low-power STOP modes when enabled via the debug control register.

Is the R5F72866N100FA#U2 qualified for automotive applications?

Yes, the R5F72866N100FA#U2 is manufactured under Renesas' "High Quality" grade and qualified to AEC-Q100 Grade 2 (−40°C to +105°C ambient). It supports automotive body electronics applications including door modules, lighting control, and HVAC systems. Its integrated CAN, USB, and robust ESD protection (±6 kV HBM) meet automotive EMC and reliability requirements per ISO 11452 and ISO 7637.