Renesas R7FA0E1073CSC#CA0

Overview

R7FA0E1073CSC#CA0 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, and integrated safety functions including SRAM parity check, CRC, and independent watchdog timer (IWDT). It targets battery-powered industrial sensors and smart metering endpoints requiring extended runtime and functional safety compliance.

For engineers reviewing the R7FA0E1073CSC#CA0 datasheet, R7FA0E1073CSC#CA0 pinout, R7FA0E1073CSC#CA0 application, or R7FA0E1073CSC#CA0 equivalent, key selection criteria include its 20-pin LSSOP package, -40°C to +105°C operating range, 1.6–5.5 V supply voltage, 16 GPIOs with 5-V tolerant pins, and support for LIN-bus UART and RTC with alarm interrupt.

Technical Context

The R7FA0E1073CSC#CA0 implements the Armv8-M architecture with TrustZone®-enabled security extensions, enabling secure boot and isolated execution environments. Its system-level features include Event Link Controller (ELC) for CPU-free peripheral chaining and Data Transfer Controller (DTC) for autonomous memory transfers triggered by interrupts.

It integrates dual-clock domain operation: high-speed HOCO (up to 32 MHz) for active mode and low-power LOCO (32.768 kHz) for RTC and IWDT. Safety mechanisms include register write protection, illegal memory access detection, and ADC self-diagnosis-each verified per IEC 61508 SIL2 readiness guidelines in the RA0E1 functional safety manual.

Key Specifications

Pinout & Package

Package: 20-pin LSSOP (4.4 mm × 6.5 mm, 0.65 mm pitch), lead-free (Sn), tape-and-reel packaging (C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA0E1053CSC#CA0, the R7FA0E1073CSC#CA0 offers double flash capacity for complex firmware and future-proofing; versus STM32G031F8P6, it delivers native LIN compliance, higher safety integration, and guaranteed -40°C to +105°C operation without derating.

Availability

R7FA0E1073CSC#CA0 is available at Aetrix Electronics and suitable for smart utility metering, industrial sensor nodes, automotive body control units, and home energy monitors requiring stable component supply across multi-year production cycles.

Supply support for R7FA0E1073CSC#CA0 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 specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The RA0E1 Group is designed for cost-sensitive, ultra-low-power embedded applications demanding functional safety and secure firmware execution - targeting battery-operated endpoints and resource-constrained control systems.

FAQ

What is the maximum operating frequency of the R7FA0E1073CSC#CA0?

The R7FA0E1073CSC#CA0 operates at a maximum frequency of 32 MHz using its high-speed on-chip oscillator (HOCO). This frequency is fully supported across the entire -40°C to +105°C temperature range and 1.6–5.5 V supply voltage window, as validated in the R01DS0427EJ0120 datasheet revision 1.20.

Does the R7FA0E1073CSC#CA0 support LIN bus communication?

Yes, the R7FA0E1073CSC#CA0 supports LIN 2.2 bus communication through its dedicated UARTA peripheral, which includes hardware-level LIN break detection and synchronization field handling. No external transceiver is required for basic LIN slave functionality, though a level-shifter may be needed for 12-V bus interfacing.

How many analog input channels does the R7FA0E1073CSC#CA0 ADC support?

The R7FA0E1073CSC#CA0 integrates a 12-bit successive approximation ADC (ADC12) with 10 selectable analog input channels: AN000 through AN007, plus AN021 and AN022. These include dedicated connections for the internal temperature sensor and reference voltage monitoring, all accessible within the 20-pin LSSOP package.

What safety features are built into the R7FA0E1073CSC#CA0?

The R7FA0E1073CSC#CA0 includes SRAM parity error checking, flash area protection, ADC self-diagnosis, Cyclic Redundancy Check (CRC) calculator, Independent Watchdog Timer (IWDT), GPIO readback level detection, register write protection, and illegal memory access detection - collectively supporting IEC 61508 SIL2 and ISO 26262 ASIL-B decomposition.

What is the package type and pin count of the R7FA0E1073CSC#CA0?

The R7FA0E1073CSC#CA0 uses a 20-pin LSSOP package (PLSP0020JB-A) with 4.4 mm × 6.5 mm dimensions and 0.65 mm pitch. It provides 16 general-purpose I/O pins, including two 5-V tolerant inputs (P913, P914), and supports standard reflow soldering per JEDEC J-STD-020.