Renesas R5F72855D100FP#U2

Overview

R5F72855D100FP#U2 from Renesas Electronics is a 32-bit RISC microcontroller based on the SuperH™ SH-2A core, featuring 512 KB on-chip flash memory, 48 KB RAM, and integrated peripherals including USB 2.0 FS host/device controller, CAN controller, 12-bit ADC (16 channels), and multiple serial interfaces (SCI, I²C, SPI). It operates at up to 100 MHz and targets industrial motor control and embedded automation systems requiring deterministic real-time response.

For engineers reviewing the R5F72855D100FP#U2 datasheet, R5F72855D100FP#U2 pinout, R5F72855D100FP#U2 application, or R5F72855D100FP#U2 equivalent, key selection criteria include its SH-2A CPU core with FPU support, 100-pin LQFP package with dedicated CAN/USB routing, flash endurance of 10,000 write/erase cycles, and compliance with industrial temperature range (−40°C to +85°C).

Technical Context

The R5F72855D100FP#U2 implements the SH-2A CPU core with 32-bit integer execution, IEEE 754-compliant single-precision floating-point unit (FPU), and 16-stage superscalar pipeline. It integrates a programmable clock pulse generator (CPG) supporting PLL-based frequency synthesis from 1–20 MHz crystal inputs, enabling configurable system clocks up to 100 MHz.

Peripheral integration includes a dual-channel CAN controller compliant with ISO 11898-1 (CAN 2.0B), full-speed USB 2.0 transceiver with internal PHY, and a 12-bit successive-approximation ADC with sample-and-hold and hardware-triggered conversion sequencing across 16 input channels.

Key Specifications

Pinout & Package

This device is housed in a 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch) package with exposed thermal pad. Pin assignments are defined for dedicated peripheral routing: CANH/CANL on pins 79/80, USB_DP/USB_DM on pins 94/95, and 16 ADC input channels distributed across PORTA, PORTB, and PORTC.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F72855D100FP#U2, the R5F72854D100FP#U2 offers identical timing and CAN performance but omits USB and reduces memory-making it a cost-optimized variant rather than drop-in replacement. The R7F7010233AFP#AA0 provides USB and modern tooling but lacks CAN and SH-2A deterministic latency, requiring firmware rearchitecture for industrial fieldbus roles.

Availability

R5F72855D100FP#U2 is available at Aetrix Electronics and suitable for industrial motor drive, factory automation controller, and embedded HMI terminal applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for R5F72855D100FP#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 Japan, specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and enterprise markets.

The SH7280 Group-including R5F72855D100FP#U2-is designed for deterministic real-time embedded control in industrial automation, motor drives, and networked equipment where SH-2A performance, CAN/USB integration, and industrial temperature resilience are critical.

FAQ

What is the maximum operating frequency of the R5F72855D100FP#U2?

The R5F72855D100FP#U2 operates at a maximum CPU frequency of 100 MHz, achieved via its integrated clock pulse generator (CPG) with PLL multiplier configured from a 1–20 MHz external crystal or clock source. This frequency applies to both instruction execution and peripheral clock domains derived from the main PLL output, as confirmed in Section 4.3 of the SH7280 Group Hardware User's Manual (Rev. 3.00).

Does the R5F72855D100FP#U2 include an integrated USB physical layer (PHY)?

Yes, the R5F72855D100FP#U2 integrates a full-speed USB 2.0 transceiver with on-die PHY circuitry, supporting both device and host modes without requiring external USB PHY components. Pins USB_DP (pin 94) and USB_DM (pin 95) connect directly to the USB connector with appropriate 27 Ω series resistors and 1.5 kΩ pull-up on DP for device enumeration, as specified in Section 4.8 of the hardware manual.

How many CAN controllers does the R5F72855D100FP#U2 support, and what protocol versions are implemented?

The R5F72855D100FP#U2 integrates two independent CAN controllers compliant with ISO 11898-1 (CAN 2.0B), supporting both standard (11-bit) and extended (29-bit) identifier formats, error confinement, and automatic retransmission. Each controller features 32 message objects, dedicated transmit/receive FIFOs, and programmable bit timing registers, as detailed in Chapter 12 of the SH7280 Group Hardware User's Manual.

What is the flash memory endurance specification for the R5F72855D100FP#U2?

The R5F72855D100FP#U2 specifies 10,000 write/erase cycles for its 512 KB on-chip flash memory, with data retention guaranteed for 20 years at +85°C. This endurance rating is validated under Renesas' standard qualification testing and applies to all flash sectors; wear leveling must be implemented in firmware if sector-level cycling exceeds this limit, as noted in the device's electrical characteristics section.

Is the R5F72855D100FP#U2 qualified for industrial temperature operation?

Yes, the R5F72855D100FP#U2 is rated for industrial temperature operation from −40°C to +85°C and classified under Renesas' "Standard" quality grade, making it suitable for factory automation, motor drives, and embedded HMI terminals. This rating is explicitly stated in the device's ordering information and confirmed in Section 7 (General Precautions) of the SH7280 Group Hardware User's Manual (Rev. 3.00).