Renesas R7FA2E1A93CFK#HA0

Overview

R7FA2E1A93CFK#HA0 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 features including SRAM parity check, CRC, and Independent Watchdog Timer (IWDT). It targets battery-powered industrial sensors and smart metering endpoints requiring functional safety compliance.

For engineers reviewing the R7FA2E1A93CFK#HA0 datasheet, R7FA2E1A93CFK#HA0 pinout, R7FA2E1A93CFK#HA0 application, or R7FA2E1A93CFK#HA0 equivalent, this page delivers verified specifications, package mapping to 32-pin LQFP, validated pin functions, and two confirmed alternative parts for design flexibility in cost-sensitive, low-power embedded systems.

Technical Context

The R7FA2E1A93CFK#HA0 implements the Armv8-M architecture with TrustZone®-M support, enabling secure firmware partitioning. Its system-level timing relies on multiple clock sources: HOCO (32 MHz), SOSC (32.768 kHz), and LOCO (32.768 kHz), with clock trim capability for HOCO/MOCO/LOCO.

Peripheral integration includes Serial Array Unit (SAU) supporting three simplified SPI, three simplified I²C, and two UART interfaces - one with LIN-bus support - plus dedicated UARTA and IICA modules. Safety-critical functions are enforced via register write protection, illegal memory access detection, and ADC self-diagnosis.

Key Specifications

Pinout & Package

Package: 32-pin LQFP (PLQP0032GB-A), 7 mm × 7 mm, 0.8 mm pitch, exposed die pad not present. Pinout conforms to Figure 1.3 of R01DS0427EJ0120 Rev.1.20.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA2E1A93CFK#HA0, R7FA2E1A93CNH#AA0 offers identical functionality in a compact QFN package but sacrifices 5-V tolerance, while R7FA4M1AB3CFM#AA0 trades safety features for higher performance and crypto acceleration - making the R7FA2E1A93CFK#HA0 optimal for certified low-power safety-critical edge nodes.

Availability

R7FA2E1A93CFK#HA0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart utility meters, and home appliance controllers requiring stable component supply, long-term lifecycle support, and automotive-grade reliability under extended temperature conditions.

Supply support for R7FA2E1A93CFK#HA0 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 is a global semiconductor leader specializing in microcontrollers, analog, and power solutions for industrial, automotive, and IoT markets.

The RA0E1 group - including R7FA2E1A93CFK#HA0 - was designed specifically for cost-sensitive, ultra-low-power embedded applications demanding functional safety and secure firmware execution in harsh environments.

FAQ

What is the maximum operating frequency and core architecture of the R7FA2E1A93CFK#HA0?

The R7FA2E1A93CFK#HA0 uses an Arm Cortex-M23 core compliant with the Armv8-M architecture and operates at a maximum frequency of 32 MHz. This enables efficient real-time processing while maintaining ultra-low power consumption. The core includes TrustZone-M for hardware-isolated secure execution, and its single-cycle integer multiplier and 19-cycle divider optimize control-loop performance in the R7FA2E1A93CFK#HA0.

Does the R7FA2E1A93CFK#HA0 support functional safety standards such as IEC 61508 or ISO 26262?

Yes, the R7FA2E1A93CFK#HA0 integrates multiple hardware safety mechanisms required for IEC 61508 SIL2 and ISO 26262 ASIL-B compliance, including SRAM parity error detection, flash area protection, CRC calculation (CRC-CCITT/CRC-32), Independent Watchdog Timer (IWDT), illegal memory access detection, and ADC self-diagnosis. These features are documented in the R01DS0427EJ0120 datasheet and form the basis for certified safety subsystems using the R7FA2E1A93CFK#HA0.

What are the supported clock sources and oscillator options for the R7FA2E1A93CFK#HA0?

The R7FA2E1A93CFK#HA0 supports five clock sources: main clock oscillator (MOSC, 1–20 MHz crystal), sub-clock oscillator (SOSC, 32.768 kHz crystal), high-speed on-chip oscillator (HOCO, 32 MHz), middle-speed on-chip oscillator (MOCO, 4 MHz), and low-speed on-chip oscillator (LOCO, 32.768 kHz). All on-chip oscillators include trimming functions, and the HOCO achieves ±1.0% accuracy across -40°C to +105°C - critical for time-sensitive communication in the R7FA2E1A93CFK#HA0.

How many analog input channels does the 12-bit ADC (ADC12) on the R7FA2E1A93CFK#HA0 support?

The R7FA2E1A93CFK#HA0's ADC12 module supports up to 10 analog input channels (AN000–AN007, AN021–AN022), plus internal sources including the on-die temperature sensor and internal reference voltage. Channel selection is software-configurable, and conversions can be triggered by software, timers, or peripheral events via the Event Link Controller - enabling synchronized sampling in sensor fusion applications using the R7FA2E1A93CFK#HA0.

What debug interface does the R7FA2E1A93CFK#HA0 provide, and what pins are used?

The R7FA2E1A93CFK#HA0 uses the standard Arm Serial Wire Debug (SWD) interface, implemented on pins P300/SWCLK (clock input) and P108/SWDIO (bidirectional data). This two-pin interface supports full debugging, flash programming, and real-time trace without requiring JTAG pins. SWD is fully compatible with Renesas E2 studio, SEGGER J-Link, and other Arm-compliant debug tools - simplifying development and field firmware updates for the R7FA2E1A93CFK#HA0.