Renesas R7F701381EAFP-C#BA2

Overview

R7F701381EAFP-C#BA2 from Renesas Electronics is a 32-bit RH850/P1M-E automotive microcontroller featuring a dual-core lockstep CPU, 2 MB on-chip flash memory, 256 KB RAM, and integrated ASIL-B compliant safety mechanisms including ECC for memory, error-correcting code for flash, and built-in self-test (BIST) for CPU cores. It supports CAN FD, LIN, SENT, and PSI5 interfaces and is qualified for automotive powertrain and chassis control applications.

For engineers reviewing the R7F701381EAFP-C#BA2 datasheet, R7F701381EAFP-C#BA2 pinout, R7F701381EAFP-C#BA2 application, or R7F701381EAFP-C#BA2 equivalent, key selection criteria include ASIL-B functional safety compliance, dual-core lockstep execution integrity, 2 MB flash with ECC, CAN FD interface timing, and QFP-144 package thermal performance under automotive temperature range (–40°C to +125°C).

Technical Context

The R7F701381EAFP-C#BA2 implements a dual-core RH850 G3M CPU in lockstep mode with cycle-by-cycle comparison and error detection logic, enabling real-time fault detection per ISO 26262 requirements. It integrates a 2-channel DMA controller supporting scatter-gather transfers, a 12-bit ADC with 48 channels and hardware-triggered sampling, and a programmable watchdog timer with windowed operation.

Its peripheral set includes three CAN FD controllers (ISO 11898-1:2015 compliant), two LIN bus controllers, four SENT receivers, and two PSI5 receivers - all with dedicated hardware filtering and timestamping. The device uses a 40 MHz internal PLL with ±1% frequency accuracy over temperature and voltage for clock generation.

Key Specifications

Pinout & Package

Package: 144-pin LQFP (20 mm × 20 mm, 0.5 mm pitch), thermally enhanced with exposed thermal pad (EPAD) connected to VSS.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7F701381EAFP-C#BA2, the R7F701382EAFP-C#BA2 offers expanded flash capacity without layout or software changes, while the SPC5744PFK1AKLQ1 requires additional components and firmware effort to match sensor interface capabilities - making R7F701381EAFP-C#BA2 the preferred choice for cost-sensitive, sensor-dense ASIL-B designs.

Availability

R7F701381EAFP-C#BA2 is available at Aetrix Electronics and suitable for engine control units, electric power steering modules, brake-by-wire actuators, and ADAS sensor hubs requiring stable component supply across automotive production lifecycles.

Supply support for R7F701381EAFP-C#BA2 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/P1M-E product line delivers high-integrity 32-bit MCUs designed specifically for ASIL-B and ASIL-C automotive applications including powertrain, chassis, and advanced driver assistance systems.

FAQ

What is the maximum operating frequency of the R7F701381EAFP-C#BA2?

The R7F701381EAFP-C#BA2 operates at a maximum CPU frequency of 200 MHz, achieved via its internal PLL with 4–20 MHz crystal input. This frequency is sustained across the full –40°C to +125°C temperature range and 3.0–5.5 V supply voltage, with zero wait states for flash access due to its 128-bit wide interface and prefetch buffer architecture. The R7F701381EAFP-C#BA2 maintains timing integrity under automotive transient conditions through adaptive voltage regulation and clock monitoring circuits.

Does the R7F701381EAFP-C#BA2 support ASIL-B compliance out of the box?

Yes, the R7F701381EAFP-C#BA2 is designed to meet ASIL-B requirements per ISO 26262:2018 Parts 5 and 6. It includes hardware-level safety features such as dual-core lockstep CPU comparison, ECC for both flash and RAM, built-in self-test (BIST) for CPU cores, and a dedicated safety management unit (SMU) with configurable error responses. These features are enabled and validated at silicon level; no external components are required to achieve ASIL-B compliance for the R7F701381EAFP-C#BA2 in supported configurations.

How many CAN FD interfaces does the R7F701381EAFP-C#BA2 integrate?

The R7F701381EAFP-C#BA2 integrates three fully independent CAN FD controllers compliant with ISO 11898-1:2015. Each controller supports data rates up to 5 Mbps, flexible data field lengths (up to 64 bytes), and time-triggered communication (TTCAN) mode for deterministic scheduling. All three CAN FD modules share no critical resources and can operate simultaneously with separate message buffers, FIFOs, and interrupt vectors - enabling robust multi-bus automotive networking in the R7F701381EAFP-C#BA2.

What sensor interface protocols are natively supported by the R7F701381EAFP-C#BA2?

The R7F701381EAFP-C#BA2 natively supports SENT (Single Edge Nibble Transmission), PSI5 (Peripheral Sensor Interface 5), LIN (Local Interconnect Network), and CAN FD without external transceivers or decode logic. It includes four dedicated SENT receivers with hardware frame synchronization and two PSI5 receivers with automatic clock recovery and bidirectional capability. These interfaces are implemented in dedicated peripheral blocks with direct DMA access and timestamping - eliminating CPU overhead and ensuring deterministic timing for the R7F701381EAFP-C#BA2 in sensor-fusion applications.

Is the R7F701381EAFP-C#BA2 pin-compatible with other RH850/P1M-E family members?

The R7F701381EAFP-C#BA2 is pin-compatible with the R7F701382EAFP-C#BA2 and R7F701383EAFP-C#BA2 within the same 144-pin LQFP package variant. These devices share identical pin functions, electrical characteristics, and thermal pad layout, allowing drop-in replacement where flash size (2 MB vs. 3 MB vs. 4 MB) and peripheral enablement align. However, compatibility with earlier RH850/P1M or non-P1M-E derivatives is not guaranteed due to differences in pin assignment and safety feature implementation in the R7F701381EAFP-C#BA2.