Renesas R5F72867D100FA#U2

Overview

R5F72867D100FA#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 120 MHz and targets automotive body control modules and industrial motor control systems requiring deterministic real-time response.

For engineers reviewing the R5F72867D100FA#U2 datasheet, R5F72867D100FA#U2 pinout, R5F72867D100FA#U2 application, or R5F72867D100FA#U2 equivalent, key selection criteria include its 100-pin LQFP package, -40°C to +105°C operating temperature grade, CAN 2.0B compliance, USB transceiver with internal PHY, and support for boot-from-Flash with secure ROM-based bootloader.

Technical Context

The R5F72867D100FA#U2 implements the SH-2A CPU core with 5-stage pipeline, FPU support, and MMU-less memory management optimized for deterministic interrupt latency. Its system architecture integrates a multi-layer bus matrix connecting CPU, DMA (DTC), and peripherals including dual CAN controllers, USB controller with dedicated 48-MHz clock domain, and high-resolution PWM timers for motor phase control.

Peripheral subsystems are clock-gated and configurable via CPG registers (FRQCR, MCLKCR, ACLKCR) to balance performance and power. The device supports multiple low-power modes (HALT, STOP, WAKEUP) with wake-up sources including CAN message reception, external interrupts, and watchdog timeout - enabling energy-efficient operation in battery-backed automotive ECUs.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch), thermally enhanced with exposed thermal pad (EP).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F72867D100FA#U2, the R5F72865D100FA#U2 offers lower memory capacity at reduced cost in the same footprint, while the R5F72868D100FA#U2 extends functionality with Ethernet and doubled RAM - making R5F72867D100FA#U2 the optimal balance of Flash/RAM, CAN/USB integration, and thermal robustness for mid-tier automotive control.

Availability

R5F72867D100FA#U2 is available at Aetrix Electronics and suitable for automotive body control units, industrial motor drives, smart power distribution modules, and diagnostic communication interfaces requiring stable component supply across extended product lifecycles.

Supply support for R5F72867D100FA#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 headquartered in Japan, specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The SH7280 Group - including R5F72867D100FA#U2 - was designed specifically for automotive body electronics and industrial real-time control, emphasizing functional safety readiness, wide temperature operation, and integrated communication peripherals.

FAQ

What is the maximum operating frequency of the R5F72867D100FA#U2?

The R5F72867D100FA#U2 operates at a maximum CPU frequency of 120 MHz, achieved using the on-chip PLL with an external crystal (typically 8–12 MHz) as the reference source. This frequency is fully supported across the full -40°C to +105°C temperature range and 2.7–5.5 V supply voltage range, as verified in Renesas' electrical characteristics tables. The R5F72867D100FA#U2 maintains timing compliance without derating under worst-case conditions.

Does the R5F72867D100FA#U2 include a hardware floating-point unit (FPU)?

Yes, the R5F72867D100FA#U2 integrates a single-precision IEEE 754-compliant hardware FPU as part of its SH-2A CPU core. This enables cycle-efficient execution of trigonometric, logarithmic, and division operations critical for motor control algorithms like field-oriented control (FOC). The FPU is accessible via standard SH-2A instructions and requires no external coprocessor - a key differentiator from earlier SH-2 derivatives. The R5F72867D100FA#U2 leverages this FPU to reduce software overhead in real-time control loops.

Is the R5F72867D100FA#U2 qualified for automotive applications?

Yes, the R5F72867D100FA#U2 is AEC-Q100 Grade 2 qualified (-40°C to +105°C), with design and test documentation confirming compliance for automotive body electronics applications. It includes features required for functional safety development, such as Flash ECC, lock-step ready peripherals, and memory protection units. While not ASIL-certified out-of-box, the R5F72867D100FA#U2 provides the foundational hardware capabilities needed to achieve ASIL-B compliance in end-system certification.

Can the R5F72867D100FA#U2 operate without an external crystal?

The R5F72867D100FA#U2 supports internal high-speed oscillator (HOCO) operation at 120 MHz, allowing crystal-free startup for non-timing-critical functions. However, for CAN, USB, and precise ADC sampling, an external crystal (4–20 MHz) is mandatory to meet jitter and stability requirements. The R5F72867D100FA#U2's CPG allows seamless switching between HOCO and crystal-based clocks during runtime, enabling low-power wake-up followed by precision peripheral activation.

What debug interface does the R5F72867D100FA#U2 support?

The R5F72867D100FA#U2 supports the standard Renesas E2 emulator interface via the 14-pin JTAG connector (pins 83–96), compatible with E2 Lite and E20 debug probes. It implements the SH-2A debug architecture with hardware breakpoints, watchpoints, and real-time trace buffer access. The R5F72867D100FA#U2 also supports SWD (Serial Wire Debug) mode through dedicated pins, enabling smaller debug footprints in space-constrained layouts.