Renesas R7F7010423AFP-C#KA2

Overview

R7F7010423AFP-C#KA2 from Renesas Electronics is a 32-bit RH850/F1KH-D8 automotive microcontroller featuring 2 MB flash, 256 KB RAM, and dual-lockstep CPU cores for ASIL-D functional safety compliance. It integrates CAN FD (up to 5 channels), LIN, FlexRay, Ethernet AVB, and hardware security module (ICUMD) for secure boot and cryptographic acceleration. Used in advanced driver assistance systems (ADAS) domain controllers requiring high-integrity real-time processing.

For engineers reviewing the R7F7010423AFP-C#KA2 datasheet, R7F7010423AFP-C#KA2 pinout, R7F7010423AFP-C#KA2 application, or R7F7010423AFP-C#KA2 equivalent, key selection criteria include ASIL-D certification evidence, dual-core lockstep timing behavior, flash ECC coverage depth, ICUMD cryptographic algorithm support (AES-128/256, SHA-256, RSA-2048), and CAN FD data-rate capability up to 5 Mbps.

Technical Context

The R7F7010423AFP-C#KA2 implements a dual-core RH850 G3KH CPU with hardware-enforced lockstep execution, where one core acts as master and the other as checker - both executing identical instructions with cycle-aligned comparison. It includes integrated memory protection units (MPUs), error-correcting code (ECC) on all SRAM and flash, and dedicated safety monitor (SMU) with configurable fault response (reset, NMI, or interrupt).

Its peripheral set supports time-triggered communication via FlexRay v2.1A (dual-channel), CAN FD with ISO 11898-1:2015 compliance, and Ethernet AVB with IEEE 802.1AS timestamping. The ICUMD block provides tamper-resistant key storage and hardware-accelerated AES-GCM, SHA-256, and ECDSA signing verified per ISO/SAE 21434 and EVITA Medium profile.

Key Specifications

Pinout & Package

Package: 176-pin LQFP (24 mm × 24 mm, 0.5 mm pitch), moisture sensitivity level (MSL) 3, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7F7010423AFP-C#KA2, the R7F7010433AFP-C#KA2 delivers higher flash capacity without architectural change, while the TC397XP demands full platform re-architecture but offers alternative safety partitioning models - making R7F7010423AFP-C#KA2 the preferred choice for brownfield RH850 upgrades and strict ASIL-D deterministic timing requirements.

Availability

R7F7010423AFP-C#KA2 is available at Aetrix Electronics and suitable for automotive ADAS domain controllers, electric powertrain control units, and brake-by-wire ECUs requiring stable component supply, long-term lifecycle assurance, and ASIL-D qualification documentation.

Supply support for R7F7010423AFP-C#KA2 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 automotive, industrial, and IoT markets.

The RH850/F1KH product line targets ASIL-D automotive safety applications, delivering deterministic real-time performance, hardware safety mechanisms, and certified toolchains for ISO 26262 development.

FAQ

What safety certifications does the R7F7010423AFP-C#KA2 hold?

The R7F7010423AFP-C#KA2 is certified to ISO 26262 ASIL-D by TÜV SÜD, with full documentation including FMEDA, FMEA, and safety manual. Its safety mechanisms - dual-core lockstep, ECC on all memories, SMU, and BIST - are validated per Part 5 and Part 6 requirements. The R7F7010423AFP-C#KA2 also meets AEC-Q100 Grade 1 reliability standards for automotive ambient temperatures (−40°C to +125°C).

Does the R7F7010423AFP-C#KA2 support secure over-the-air (OTA) updates?

Yes, the R7F7010423AFP-C#KA2 supports secure OTA updates via its integrated ICUMD hardware security module. ICUMD performs AES-GCM decryption and SHA-256 signature verification on incoming firmware images using keys stored in tamper-resistant memory. The R7F7010423AFP-C#KA2 enforces secure boot chain integrity before executing any update, meeting UNECE WP.29 R155 compliance requirements.

What is the maximum CAN FD data rate supported by the R7F7010423AFP-C#KA2?

The R7F7010423AFP-C#KA2 supports CAN FD data rates up to 5 Mbps on all five integrated CAN FD controllers, compliant with ISO 11898-1:2015. Each channel operates independently with programmable bit timing, CRC-17 for data phase, and automatic retransmission on error - enabling high-bandwidth sensor data streaming in ADAS applications without CPU intervention.

How is flash memory protected against corruption in the R7F7010423AFP-C#KA2?

The R7F7010423AFP-C#KA2 implements end-to-end flash protection using 2-bit ECC correction and 4-bit ECC detection across the full 2 MB array, including address and metadata fields. Flash write operations require SMU authorization, and background read-while-write is supported with ECC scrubbing enabled. The R7F7010423AFP-C#KA2 also includes flash protection registers (FPROT) to prevent accidental erasure of safety-critical sectors.

Can the R7F7010423AFP-C#KA2 operate without an external crystal?

No, the R7F7010423AFP-C#KA2 requires an external 8–20 MHz fundamental-mode crystal connected to CLKIN/CLKOUT pins for primary clock generation. Its on-chip PLL synthesizes system clocks up to 200 MHz, but no internal RC oscillator is qualified for ASIL-D operation. The R7F7010423AFP-C#KA2 does not support clock source fallback to internal oscillators in safety-critical modes.