Renesas R7FA0E1073CFJ#HA0

Overview

R7FA0E1073CFJ from Renesas is an ultra-low-power 32-bit Arm® Cortex®-M23 microcontroller operating at up to 32 MHz, featuring 64-KB code flash, 12-KB SRAM, a 12-bit ADC with 10 input channels, integrated temperature sensor, and safety features including SRAM parity check, CRC, IWDT, and flash protection. It targets battery-powered industrial sensors and smart metering endpoints requiring deterministic real-time response and functional safety compliance.

For engineers reviewing the R7FA0E1073CFJ datasheet, R7FA0E1073CFJ pinout, R7FA0E1073CFJ application, or R7FA0E1073CFJ equivalent, key selection criteria include its 32-pin LQFP package, -40°C to +105°C operating range, 1.6–5.5 V supply voltage, dual 5-V-tolerant I/O pins, and support for LIN-bus UART - critical for automotive body electronics and industrial control nodes.

Technical Context

The R7FA0E1073CFJ implements Armv8-M architecture with TrustZone®-enabled security extensions, supporting secure boot and isolated execution environments. Its memory subsystem includes 64-KB code flash with read protection (FRP), 1-KB data flash rated for 1 million program/erase cycles, and 12-KB parity-protected SRAM for error detection in safety-critical operation.

Peripheral integration centers on deterministic timing and low-power responsiveness: the Event Link Controller (ELC) enables CPU-free peripheral chaining (e.g., ADC trigger → DTC transfer → TAU PWM update), while the Serial Array Unit (SAU) provides three independent simplified SPI/I²C/UART interfaces plus one dedicated LIN-capable UARTA - all configurable without software intervention.

Key Specifications

Pinout & Package

Package: 32-pin LQFP (PLQP0032GB-A), 7 mm × 7 mm, 0.8 mm pitch, operating temperature range −40°C to +105°C.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA2E1073CFJ and R7FA4M1073CFJ, the R7FA0E1073CFJ delivers optimal cost/power balance for constrained-edge nodes where LIN, functional safety, and long battery life outweigh raw compute or multimedia capability - making it ideal for certified industrial and automotive sub-systems.

Availability

R7FA0E1073CFJ is available at Aetrix Electronics and suitable for industrial sensor nodes, smart meter communication modules, automotive body control units, and medical wearable hubs requiring stable component supply across extended product lifecycles.

Supply support for R7FA0E1073CFJ 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 leader delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT applications.

The RA0E1 Group is designed specifically for cost-sensitive, ultra-low-power edge devices requiring functional safety certification (IEC 61508 SIL2, ISO 26262 ASIL-B) and seamless scalability within the Renesas RA ecosystem.

FAQ

What is the maximum operating frequency and core architecture of the R7FA0E1073CFJ?

The R7FA0E1073CFJ features an Arm Cortex-M23 core compliant with the Armv8-M architecture and operates at a maximum frequency of 32 MHz. This core includes TrustZone security extensions, single-cycle integer multiply, and 19-cycle integer divide. The R7FA0E1073CFJ uses this architecture to deliver deterministic real-time performance while maintaining ultra-low power consumption - critical for battery-operated edge devices where both security and energy efficiency are mandatory.

Does the R7FA0E1073CFJ support LIN bus communication, and how is it implemented?

Yes, the R7FA0E1073CFJ supports LIN bus communication through its dedicated UARTA peripheral, which is explicitly specified in the datasheet as LIN-bus capable. Additionally, the Serial Array Unit (SAU) provides two UART channels that can be configured for LIN protocol. The R7FA0E1073CFJ implements LIN 2.2 physical layer timing and frame structure in hardware, enabling reliable slave-node operation in automotive body electronics without external transceivers beyond the standard LIN driver IC.

What safety and security features are integrated into the R7FA0E1073CFJ?

The R7FA0E1073CFJ integrates multiple hardware-based safety and security features: SRAM parity error detection, flash area protection, ADC self-diagnosis, Cyclic Redundancy Check (CRC-32), Independent Watchdog Timer (IWDT), GPIO readback level detection, register write protection, illegal memory access detection, and a True Random Number Generator (TRNG). These features collectively support IEC 61508 SIL2 and ISO 26262 ASIL-B compliance - making the R7FA0E1073CFJ suitable for certified industrial control and automotive applications where functional safety is required.

What are the analog capabilities of the R7FA0E1073CFJ, and how many input channels does the ADC support?

The R7FA0E1073CFJ includes a 12-bit successive approximation ADC (ADC12) with up to 10 selectable analog input channels (AN000–AN007, AN021–AN022), an internal temperature sensor (TSN), and dual analog reference pins (VREFH0/VREFL0). The ADC supports conversion of external signals, internal reference voltage, and temperature sensor output - enabling simultaneous monitoring of multiple physical parameters in compact embedded systems without external signal conditioning.

Which package type and pin count does the R7FA0E1073CFJ use, and what are its I/O characteristics?

The R7FA0E1073CFJ uses a 32-pin LQFP package (PLQP0032GB-A) measuring 7 mm × 7 mm with 0.8 mm pitch. It provides 26 general-purpose I/O pins, 3 dedicated input-only pins, 16 pull-up resistors, 15 N-channel open-drain outputs, and 2 pins with 5-V tolerance (P913 and P914). This configuration supports robust interfacing with mixed-voltage peripherals while maintaining compatibility with standard surface-mount assembly processes.