Renesas R5F72866D100FA#U2

Overview

R5F72866D100FA#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 dual 10-bit ADCs. It operates at up to 100 MHz with 3.3 V supply and targets industrial motor control and factory automation systems requiring real-time deterministic response.

For engineers reviewing the R5F72866D100FA#U2 datasheet, R5F72866D100FA#U2 pinout, R5F72866D100FA#U2 application, or R5F72866D100FA#U2 equivalent, key selection criteria include its 144-pin LQFP package, CAN 2.0B compliance, USB transceiver integration, 100 MHz core clock capability, and support for single-chip operation with external crystal or internal PLL.

Technical Context

The R5F72866D100FA#U2 implements the SH-2A CPU core with FPU support, executing instructions in a five-stage pipeline with branch prediction. Its system architecture includes a multi-layer bus matrix connecting CPU, DMA (DTC), and peripherals such as MTU2 timer units, SCI serial interfaces, and a 16-channel DMAC.

Real-time performance is enabled by hardware interrupt nesting with 64 priority levels via INTC, configurable watchdog timer (WDT) with window function, and on-chip debug support via JTAG interface. Clock generation uses CPG with selectable PLL multiplication (×1 to ×8), enabling flexible trade-offs between power and performance across operating modes.

Key Specifications

Pinout & Package

Package: 144-pin LQFP (20 mm × 20 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level (MSL) 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F72866D100FA#U2, the R5F72865D100FA#U2 reduces memory and removes USB to lower cost, while the R5F72867D100FA#U2 adds Ethernet and RAM for higher-level network integration - all three share identical CAN, ADC, and timer subsystems and require no PCB redesign.

Availability

R5F72866D100FA#U2 is available at Aetrix Electronics and suitable for industrial motor control, factory automation nodes, and PLC I/O modules requiring stable component supply, long-term lifecycle support, and automotive-grade reliability under extended temperature conditions.

Supply support for R5F72866D100FA#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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, and power devices for industrial, automotive, and infrastructure markets.

The SH7280 Group, including R5F72866D100FA#U2, was designed for real-time embedded control in factory automation, motor drives, and industrial networking - emphasizing deterministic timing, integrated communication, and robust operation in harsh environments.

FAQ

What is the maximum operating frequency of the R5F72866D100FA#U2?

The R5F72866D100FA#U2 operates at a maximum CPU frequency of 100 MHz using its on-chip PLL with external crystal input. This frequency is achievable with a 10–20 MHz crystal and appropriate FRQCR register settings; sustained operation requires thermal management within the −40 °C to +85 °C ambient range and stable 3.3 V ±5% supply.

Does the R5F72866D100FA#U2 include an integrated USB transceiver?

Yes, the R5F72866D100FA#U2 integrates a full-speed USB 2.0 transceiver compliant with USB Specification Rev 2.0. It supports both host and device modes without external PHY components, using dedicated USB_DP and USB_DM pins with internal termination and pull-up control - confirmed in Section 4.8 of the SH7280 Hardware User's Manual.

How many CAN interfaces does the R5F72866D100FA#U2 support?

The R5F72866D100FA#U2 supports two independent CAN 2.0B controllers (CAN0 and CAN1), each with dedicated CRX/CTX pins and full message object buffers. Both controllers operate concurrently at bit rates up to 1 Mbps and support self-test, loopback, and sleep/wakeup functions as documented in Chapter 13 of the hardware manual.

What debug interface is supported by the R5F72866D100FA#U2?

The R5F72866D100FA#U2 supports IEEE 1149.1 JTAG for on-chip debugging, flash programming, and real-time trace. It includes dedicated TCK, TMS, TDI, TDO, and TRST pins; no SWD or cJTAG is supported. Debug access remains functional across all operating modes including low-power stop modes.

Is the R5F72866D100FA#U2 pin-compatible with other SH7280 Group MCUs?

Yes, the R5F72866D100FA#U2 is pin-compatible with other 144-pin LQFP variants in the SH7280 Group, including R5F72865D100FA#U2 and R5F72867D100FA#U2. All share identical pin assignments for power, clocks, reset, peripherals, and GPIO - enabling hardware reuse across memory/feature variants without PCB changes.