Renesas R7F7010323AFP-C#KA4

Overview

R7F7010323AFP-C#KA4 from Renesas Electronics is a 32-bit RH850/F1KH-D8 automotive microcontroller featuring dual-core lockstep CPU architecture, 2 MB on-chip flash memory, and ASIL-B compliance for safety-critical powertrain and chassis control applications. It integrates CAN FD (up to 5 channels), LIN, SENT, and hardware-based cryptographic acceleration.

For engineers reviewing the R7F7010323AFP-C#KA4 datasheet, R7F7010323AFP-C#KA4 pinout, R7F7010323AFP-C#KA4 application, or R7F7010323AFP-C#KA4 equivalent, key selection criteria include ASIL-B functional safety certification, dual-core lockstep execution integrity, CAN FD interface count and timing accuracy, flash endurance (100k write/erase cycles), and qualified operation at −40°C to +125°C ambient.

Technical Context

The R7F7010323AFP-C#KA4 implements a dual-core RH850G3KH CPU with lockstep monitoring, enabling real-time fault detection via instruction-level comparison and error signaling through dedicated safety management units (SMU). Its memory subsystem includes 2 MB of embedded flash with ECC protection, 384 KB SRAM (with parity), and 64 KB TCM.

Peripheral integration targets automotive domain controllers: five CAN FD controllers with time-triggered communication support, four 12-bit ADCs (total 48 channels), SENT receivers for sensor interfacing, and an Intelligent Cryptographic Unit (ICUMD) supporting AES-128/256, SHA-256, and RSA-2048 for secure boot and firmware updates.

Key Specifications

Pinout & Package

Package: 176-pin LQFP (24 mm × 24 mm, 0.5 mm pitch), moisture sensitivity level MSL3, RoHS-compliant lead finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7F7010323AFP-C#KA4, the R7F7010223AFP-C#KA4 offers pin-compatible cost reduction without crypto or full CAN FD count, while the SPC574S54E3 requires significant safety software investment and lacks deterministic lockstep fault detection - making R7F7010323AFP-C#KA4 optimal for new ASIL-B designs demanding hardware-enforced safety and security.

Availability

R7F7010323AFP-C#KA4 is available at Aetrix Electronics and suitable for engine control units, electric power steering modules, brake control systems, and ADAS sensor hubs requiring stable component supply across automotive production lifecycles.

Supply support for R7F7010323AFP-C#KA4 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 delivers high-integrity 32-bit MCUs for ASIL-B automotive applications, designed specifically for powertrain, chassis, and advanced driver assistance systems requiring hardware safety mechanisms and real-time determinism.

FAQ

What is the maximum operating frequency of the R7F7010323AFP-C#KA4?

The R7F7010323AFP-C#KA4 operates at a maximum system clock frequency of 200 MHz, achieved via its on-chip PLL with external 4–20 MHz crystal input. This frequency is sustained across the full −40°C to +125°C temperature range and supports deterministic real-time execution for ASIL-B control loops. All timing-critical peripherals-including ADC sampling, SENT decoding, and CAN FD bit arbitration-are synchronized to this clock domain. The R7F7010323AFP-C#KA4 datasheet specifies setup/hold margins and jitter limits validated at this frequency under worst-case voltage and temperature conditions.

Does the R7F7010323AFP-C#KA4 support ISO 26262 ASIL-B certification out of the box?

Yes, the R7F7010323AFP-C#KA4 is designed and qualified to meet ISO 26262:2018 Part 2–6 requirements for ASIL-B applications. It includes hardware safety mechanisms such as dual-core lockstep CPU comparison, SMU-monitored clock/voltage/temperature sensors, ECC-protected flash and parity-checked SRAM, and dedicated error signaling registers. Renesas provides a complete ASIL-B safety manual, FMEDA report, and diagnostic software library for R7F7010323AFP-C#KA4, enabling certified toolchain integration without external safety co-processors.

How many CAN FD interfaces does the R7F7010323AFP-C#KA4 integrate, and what are their data rate capabilities?

The R7F7010323AFP-C#KA4 integrates five independent CAN FD controllers compliant with ISO 11898-1:2015. Each supports programmable bit rates up to 5 Mbps in the data phase and 1 Mbps in the arbitration phase, with flexible payload lengths (up to 64 bytes) and built-in CRC and bit stuffing handling. All five CAN FD modules support time-triggered communication mode with hardware timestamping accuracy better than ±1 µs, enabling deterministic scheduling in X-by-wire and chassis control networks. The R7F7010323AFP-C#KA4 pinout allocates dedicated differential pairs for each channel with configurable internal termination.

What cryptographic algorithms are accelerated by the ICUMD in the R7F7010323AFP-C#KA4?

The Intelligent Cryptographic Unit (ICUMD) in the R7F7010323AFP-C#KA4 accelerates AES-128 and AES-256 encryption/decryption, SHA-256 hashing, and RSA-2048 signature verification. These operations execute in hardware with deterministic latency-typically under 50 µs per AES-256 block or SHA-256 hash-and are accessible via memory-mapped registers without CPU intervention. The ICUMD supports secure key storage isolation and is integral to the R7F7010323AFP-C#KA4 secure boot flow, enabling authenticated firmware updates and runtime attestation without software-based crypto overhead.

Is the R7F7010323AFP-C#KA4 pin-compatible with other RH850/F1KH variants?

The R7F7010323AFP-C#KA4 uses a 176-pin LQFP package with a defined pin mapping documented in Section 2A of the RH850/F1KH Hardware User's Manual. It shares identical mechanical dimensions and pinout with R7F7010223AFP-C#KA4 (1 MB flash variant), enabling direct PCB replacement where reduced memory and fewer peripherals are acceptable. However, it is not pin-compatible with RH850/F1KM series devices due to differing peripheral allocations and safety architecture signals. Always verify pin function tables in the official R7F7010323AFP-C#KA4 datasheet before layout reuse.