Renesas R5F72865N100FP#U2

Overview

R5F72865N100FP#U2 from Renesas Electronics is a 32-bit RISC microcontroller based on the SuperH™ SH-2A core, featuring 1 MB of on-chip Flash memory, 128 KB RAM, and integrated peripherals including CAN, USB 2.0 FS, 12-bit ADC (24 channels), and MTU2 timer units. It operates at up to 100 MHz and targets automotive body control modules and industrial motor control systems requiring real-time deterministic response.

For engineers reviewing the R5F72865N100FP#U2 datasheet, R5F72865N100FP#U2 pinout, R5F72865N100FP#U2 application, or R5F72865N100FP#U2 equivalent, key selection criteria include its 100-pin LQFP package, dual CAN 2.0B controllers with time-triggered communication support, USB transceiver compliance with USB-IF certification, and operating temperature range of −40°C to +105°C for under-hood automotive use.

Technical Context

The R5F72865N100FP#U2 implements the SH-2A CPU core with 5-stage pipeline, FPU support, and 32-bit data/32-bit address bus architecture. It integrates a Clock Pulse Generator (CPG) supporting PLL-based clock synthesis from 1–20 MHz crystal inputs, enabling configurable system clocks up to 100 MHz and peripheral-specific clock domains for CAN (up to 8 MHz), USB (48 MHz), and ADC (up to 12.5 MHz).

Its interrupt subsystem includes a 192-vector INTC with priority-level masking and fast context switching, while the Data Transfer Controller (DTC) supports autonomous memory-to-peripheral transfers without CPU intervention. The device supports single-chip mode with internal reset generation and power-on reset detection circuitry compliant with ISO 11898-1 timing requirements.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (14 mm × 14 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 R5F72865N100FP#U2, the R5F72864N100FP#U2 offers identical packaging and CAN timing but omits USB connectivity and half the memory, while the RA6M4 provides enhanced protocol bandwidth and modern toolchain support at the cost of software migration effort and higher power consumption in active mode.

Availability

R5F72865N100FP#U2 is available at Aetrix Electronics and suitable for automotive body electronics, industrial motor drives, and USB-based diagnostic interfaces requiring stable component supply across multi-year production cycles.

Supply support for R5F72865N100FP#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 manufacturer headquartered in Tokyo, Japan, specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The SH7280 Group, which includes the R5F72865N100FP#U2, was designed specifically for automotive body electronics and industrial real-time control applications requiring high reliability, functional safety readiness, and mixed-signal integration.

FAQ

What is the maximum operating frequency of the R5F72865N100FP#U2?

The R5F72865N100FP#U2 operates at a maximum system clock frequency of 100 MHz, achieved via its integrated Clock Pulse Generator (CPG) with PLL-based frequency multiplication from an external crystal or oscillator. This frequency enables deterministic execution of control algorithms with sub-10 µs loop times, critical for automotive body control and motor drive applications. The R5F72865N100FP#U2 maintains timing integrity across its full operating temperature range of −40°C to +105°C.

Does the R5F72865N100FP#U2 include an integrated USB physical layer?

Yes, the R5F72865N100FP#U2 integrates a full-speed USB 2.0 transceiver with on-die PHY, supporting USB-IF certified compliance without external components. It implements the USB device controller in hardware and supports CDC ACM class for virtual COM port functionality. This eliminates the need for discrete USB transceivers, simplifying board layout and reducing BOM cost. The R5F72865N100FP#U2 also provides dedicated USB_DP and USB_DM pins with internal pull-up resistors controllable via software.

What automotive qualification standards does the R5F72865N100FP#U2 meet?

The R5F72865N100FP#U2 is qualified to AEC-Q100 Grade 2 (−40°C to +105°C), meeting automotive reliability and stress-test requirements for under-hood and cabin-mounted electronic control units. It incorporates built-in features supporting functional safety development, including ECC on Flash and SRAM, clock failure detection, and windowed watchdog timers. While not ASIL-certified out-of-box, the R5F72865N100FP#U2 provides hardware primitives required for ISO 26262 ASIL-B implementation in body control applications.

How many CAN interfaces does the R5F72865N100FP#U2 support, and what protocols are implemented?

The R5F72865N100FP#U2 integrates two independent CAN 2.0B controllers supporting both standard and extended frame formats, with bit rates up to 1 Mbps. Each controller includes dedicated message RAM, acceptance filtering, and time-triggered communication (TTCAN) support for deterministic scheduling. These controllers comply with ISO 11898-1 physical layer timing specifications and support error confinement and bus-off recovery. The R5F72865N100FP#U2 does not implement CAN FD protocol in hardware.

Is the R5F72865N100FP#U2 pin-compatible with other members of the SH7280 Group?

Yes, the R5F72865N100FP#U2 shares the same 100-pin LQFP package and pin assignment with other SH7280 Group devices such as the R5F72864N100FP#U2 and R5F72866N100FP#U2, enabling hardware reuse across variants. Pin functions-including power, clock, CAN, USB, ADC, and GPIO-are identical across this package variant. However, differences in on-chip memory size, peripheral enablement (e.g., USB PHY presence), and factory-programmed options require firmware validation when substituting between variants. The R5F72865N100FP#U2 maintains full pin-to-pin compatibility within its LQFP footprint.