Renesas R7FA0E1073CFJ#BA0

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, this page delivers verified technical context, package-specific pin mapping for the 32-pin LQFP, key timing and power parameters, safety-critical peripheral capabilities, and validated alternative parts for design flexibility.

Technical Context

The R7FA0E1073CFJ implements Armv8-M architecture with TrustZone®-enabled secure execution environment, supporting hardware-based isolation between secure and non-secure firmware partitions. Its clock system integrates HOCO (24/32 MHz), MOCO (4 MHz), LOCO (32.768 kHz), and SOSC (32.768 kHz) with trimmable accuracy-enabling precise RTC operation and low-power wake-up timing.

Peripheral integration includes Serial Array Unit (SAU) with three simplified SPI, three simplified I²C, two UART, and one LIN-capable UART; plus UARTA and IICA for dedicated serial control. Safety functions include ADC self-diagnosis, GPIO readback level detection, illegal memory access detection, and register write protection via PRCR.

Key Specifications

Pinout & Package

Package: 32-pin LQFP (7 mm × 7 mm, 0.8 mm pitch), RoHS-compliant Sn finish, rated for -40°C to +105°C ambient operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA0E1073CNH and R7FA0E1053CFJ, the R7FA0E1073CFJ offers maximum flash capacity and analog channel count in the LQFP package, making it optimal for feature-rich, field-upgradable designs where thermal margin and layout simplicity are prioritized over miniaturization.

Availability

R7FA0E1073CFJ is available at Aetrix Electronics and suitable for industrial sensor nodes, smart utility meters, and automotive body control modules requiring stable component supply, long-term lifecycle assurance, and full production traceability.

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 for cost-sensitive, ultra-low-power applications demanding functional safety and security - targeting battery-operated edge devices where energy efficiency, certification readiness, and software scalability are critical.

FAQ

What is the maximum operating frequency of the R7FA0E1073CFJ?

The R7FA0E1073CFJ operates at a maximum frequency of 32 MHz using its Arm Cortex-M23 core. This speed is achievable with the high-speed on-chip oscillator (HOCO) or external crystal sources. The device maintains full peripheral functionality-including ADC sampling, UART transmission, and timer operations-at this frequency, enabling real-time processing in compact edge nodes without external clock components.

Does the R7FA0E1073CFJ support functional safety standards?

Yes, the R7FA0E1073CFJ includes multiple hardware safety mechanisms required for IEC 61508 SIL2 compliance: SRAM parity error detection, independent watchdog timer (IWDT), cyclic redundancy check (CRC) engine, flash area protection, ADC self-diagnosis, and illegal memory access detection. These features are documented in the R01DS0427EJ0120 datasheet and supported by Renesas' Functional Safety Package for RA0E1.

How many analog input channels does the R7FA0E1073CFJ ADC support?

The R7FA0E1073CFJ integrates a 12-bit ADC12 with up to 10 selectable analog input channels: AN000 through AN007, plus AN021 and AN022. AN021 and AN022 are dedicated to the internal temperature sensor output and reference voltage, respectively. All channels support single-ended sampling with programmable sample-and-hold timing and hardware-triggered conversions via TAU or ELC events.

What debug interface does the R7FA0E1073CFJ use?

The R7FA0E1073CFJ uses Serial Wire Debug (SWD) with SWDIO and SWCLK pins for full-core debugging, flash programming, and real-time trace. It supports standard ARM CoreSight™ MTB-M23 trace buffer and DWT watchpoints. No JTAG interface is implemented; SWD is the sole debug protocol, minimizing pin count while maintaining full development visibility and production programming capability.

Is the R7FA0E1073CFJ pin-compatible with other RA0E1 family members?

Yes, the R7FA0E1073CFJ is pin-compatible with other 32-pin RA0E1 variants including R7FA0E1053CFJ (32-KB flash) and R7FA0E1073CNH (same features, HWQFN package). Pin assignments for VCC, VSS, SWD, reset, clocks, ADC, and general-purpose I/O are identical across these 32-pin LQFP devices, enabling hardware reuse and firmware portability within the RA0E1 group.