Renesas R7F701275EABG-C#BC6

Overview

R7F701275EABG-C#BC6 from Renesas Electronics is a 32-bit RH850/C1M-A1 automotive microcontroller with 2 MB code flash, 256 KB RAM, and dual-lockstep CPU cores supporting ASIL-D functional safety. It integrates CAN FD (2 channels), LIN (3 channels), Ethernet AVB, and hardware security module (HSM) for secure boot and cryptographic acceleration. Used in automotive body control modules requiring high-integrity real-time control.

For engineers reviewing the R7F701275EABG-C#BC6 datasheet, R7F701275EABG-C#BC6 pinout, R7F701275EABG-C#BC6 application, or R7F701275EABG-C#BC6 equivalent, key selection criteria include dual-core lockstep compliance with ISO 26262 ASIL-D, integrated HSM for AES-128/SHA-256, CAN FD data rate up to 5 Mbps, and 176-pin LQFP package with automotive-grade AEC-Q100 Grade 1 qualification.

Technical Context

The R7F701275EABG-C#BC6 implements a dual-core RH850 G3KH CPU architecture with hardware-enforced lockstep execution and error-correcting code (ECC) on both instruction and data memories. It features a dedicated Safety Support Core (SSC) that monitors core divergence, memory integrity, and clock domain faults in real time.

Its peripheral set includes a 12-bit ADC with 48 channels, 32-bit timer units (MTU3, GPT), and a flexible I/O port system supporting programmable slew rate, pull-up/down, and noise filtering per pin-critical for harsh automotive EMI environments.

Key Specifications

Pinout & Package

176-pin LQFP (24 mm × 24 mm, 0.5 mm pitch), thermally enhanced with exposed thermal pad. Pinout conforms to RH850/C1M-A1 standard layout per Renesas User's Manual Hardware Rev.1.20 (May 2018), Section 1.2.2.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7F701274EABG-C#BC6 and R7F701276EABG-C#BC6, the R7F701275EABG-C#BC6 provides balanced memory resources (2 MB flash / 256 KB RAM) ideal for production-ready ASIL-D body/gateway applications without over-provisioning or under-specifying.

Availability

R7F701275EABG-C#BC6 is available at Aetrix Electronics and suitable for automotive body control modules, gateway ECUs, and EPS support systems requiring stable component supply, long-term lifecycle assurance, and AEC-Q100 Grade 1 qualification.

Supply support for R7F701275EABG-C#BC6 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, power, and SoC solutions for automotive, industrial, and IoT markets.

The RH850/C1M-A1 product line delivers high-reliability 32-bit MCUs designed specifically for ASIL-D automotive applications including body electronics, chassis, and domain controllers-emphasizing functional safety, security, and real-time determinism.

FAQ

What is the maximum operating frequency of the R7F701275EABG-C#BC6?

The R7F701275EABG-C#BC6 operates at a maximum CPU frequency of 400 MHz, achieved via its on-chip PLL using an external 1–20 MHz crystal or clock source. This frequency is sustained across the full AEC-Q100 Grade 1 temperature range (−40°C to +125°C) with appropriate power supply regulation and thermal design. The R7F701275EABG-C#BC6 maintains timing closure and functional correctness at this speed under worst-case voltage and temperature conditions as verified by Renesas silicon characterization.

Does the R7F701275EABG-C#BC6 support ISO 26262 ASIL-D compliance out of the box?

Yes, the R7F701275EABG-C#BC6 is architected for ASIL-D compliance per ISO 26262:2018 Part 2–6. It includes dual-core lockstep execution, ECC on all on-chip memories, a dedicated Safety Support Core (SSC), built-in self-test (BIST), and hardware memory protection. Renesas provides certified safety manuals, FMEDA reports, and diagnostic software libraries to support integration into ASIL-D systems. The R7F701275EABG-C#BC6 itself is not "certified" - certification occurs at the system level, but the device provides all required hardware mechanisms.

What Ethernet standard does the R7F701275EABG-C#BC6 implement?

The R7F701275EABG-C#BC6 implements IEEE 802.3bw (100BASE-T1) Automotive Ethernet with AVB (Audio Video Bridging) extensions, including hardware timestamping, traffic shaping, and SRP (Stream Reservation Protocol) acceleration. It supports full-duplex 100 Mbps operation over single-pair unshielded twisted pair (UTP), meeting ISO 10605 and ISO 11452-4 EMI immunity requirements for automotive use. The R7F701275EABG-C#BC6 does not support 1000BASE-T1 or TSN time-aware shapers beyond AVB baseline.

How many CAN FD interfaces does the R7F701275EABG-C#BC6 include?

The R7F701275EABG-C#BC6 integrates two independent CAN FD controllers compliant with ISO 11898-1:2015, each supporting data rates up to 5 Mbps in FD mode and classic CAN up to 1 Mbps. Both controllers feature message RAM with configurable TX/RX buffers, hardware acceptance filtering, and loopback self-test modes. These interfaces are electrically isolated from the MCU core via dedicated bus bridges and support concurrent operation without CPU intervention using DMA-assisted transfers.

Is the R7F701275EABG-C#BC6 pin-compatible with other RH850/C1M-A1 variants?

Yes, the R7F701275EABG-C#BC6 is fully pin-compatible with all members of the RH850/C1M-A1 family in the 176-pin LQFP package (e.g., R7F701274EABG-C#BC6, R7F701276EABG-C#BC6), sharing identical mechanical dimensions, pin count, pitch, and signal assignment per Renesas Hardware User's Manual Rev.1.20. This allows direct PCB reuse across memory-variant SKUs, simplifying platform scaling and reducing NRE costs. The R7F701275EABG-C#BC6 retains full electrical compatibility including drive strength, voltage thresholds, and timing parameters.