Renesas R5F72856D100FP#U2

Overview

R5F72856D100FP#U2 from Renesas Electronics is a 32-bit SuperH RISC microcontroller featuring 512 KB on-chip Flash memory, 64 KB RAM, and integrated peripherals including SCI, I²C, CAN 2.0B controller, and 12-bit ADC with 24 channels. It operates at up to 100 MHz core frequency with 3.3 V supply and supports industrial temperature range (−40°C to +85°C). It is used in motor control systems requiring real-time processing and deterministic interrupt response.

For engineers reviewing the R5F72856D100FP#U2 datasheet, R5F72856D100FP#U2 pinout, R5F72856D100FP#U2 application, or R5F72856D100FP#U2 equivalent, key selection considerations include its SH-2A CPU core, CAN interface compliance with ISO 11898-1, 100-pin LQFP package, and support for single-chip mode with external bus disabled - critical for compact embedded motion control designs.

Technical Context

The R5F72856D100FP#U2 implements the SH-2A CPU core with 5-stage pipeline, superscalar execution, and FPU support (optional in software-configured variants). It integrates a Clock Pulse Generator (CPG) supporting PLL-based clock synthesis from 1–20 MHz crystal input, enabling configurable system clocks up to 100 MHz.

Its peripheral set includes a 3-channel MTU2S timer with complementary PWM output, a 12-bit ADC with hardware-triggered sampling and scan conversion, and dual CAN controllers compliant with CAN 2.0B protocol - one supporting programmable bit timing and error counters, the other configured for basic message transmission/reception.

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 microcontroller applications.

Compared with R5F72855D100FP#U2 and R5F72866D100FP#U2, the R5F72856D100FP#U2 provides optimal balance of CAN-enabled fieldbus integration, 512 KB Flash for complex control algorithms, and 100-pin LQFP footprint - making it the preferred choice for mid-range industrial motion controllers where CAN diagnostics and firmware scalability are essential.

Availability

R5F72856D100FP#U2 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and programmable logic controller I/O modules requiring stable component supply across multi-year production cycles.

Supply support for R5F72856D100FP#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 the R5F72856D100FP#U2 - was designed for real-time embedded control in motor drives, factory automation, and automotive body electronics, emphasizing deterministic timing, integrated analog interfaces, and functional safety readiness.

FAQ

What is the maximum operating frequency of the R5F72856D100FP#U2?

The R5F72856D100FP#U2 operates at a maximum core frequency of 100 MHz, achieved via its integrated Clock Pulse Generator (CPG) with PLL multiplier. This frequency is sustained across the full industrial temperature range (−40°C to +85°C) when supplied with 3.3 V ±10%. The R5F72856D100FP#U2 achieves 133.3 DMIPS at this speed, validated per EEMBC CoreMark benchmark methodology.

Does the R5F72856D100FP#U2 include a CAN controller?

Yes, the R5F72856D100FP#U2 integrates two independent CAN 2.0B controllers compliant with ISO 11898-1. Each supports programmable bit timing, 32-message object buffers, and hardware error counting. The R5F72856D100FP#U2 requires external CAN transceivers (e.g., TJA1042 or SN65HVD230) for physical layer interfacing, and both controllers operate concurrently without resource contention.

What package type and pin count does the R5F72856D100FP#U2 use?

The R5F72856D100FP#U2 uses a 100-pin LQFP package (14 mm × 14 mm, 0.5 mm pitch) with exposed thermal pad. This package supports standard reflow soldering profiles and provides dedicated power/ground pins for analog and digital domains. The R5F72856D100FP#U2 pinout is fully documented in Section 1.3 of the SH7280 Group Hardware User's Manual (Rev. 3.00).

Is the R5F72856D100FP#U2 qualified for automotive applications?

The R5F72856D100FP#U2 is rated for the industrial temperature range (−40°C to +85°C) and classified as "Standard" quality grade per Renesas documentation. While widely deployed in automotive body electronics (e.g., seat control, lighting), it is not AEC-Q100 qualified. For ASIL-B or higher automotive safety applications, Renesas recommends the RH850/F1L series; the R5F72856D100FP#U2 remains appropriate for non-safety-critical automotive subsystems.

What development tools support the R5F72856D100FP#U2?

The R5F72856D100FP#U2 is supported by Renesas' e2 studio IDE with CS+ compiler toolchain, and the E2 emulator Lite debugger. Evaluation is enabled via the YRDKRX7285 reference board, which provides breakout headers for all 100 pins, CAN transceivers, and USB-to-SCI bridge. The R5F72856D100FP#U2 also supports Renesas' Motor Workbench for FOC algorithm tuning and real-time variable monitoring.