Renesas R7FA2E1A92DFJ#BA0

Overview

R7FA2E1A92DFJ#BA0 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, CRC, IWDT, and flash protection. It targets battery-powered industrial sensors and smart metering endpoints requiring extended runtime and functional safety compliance.

For engineers reviewing the R7FA2E1A92DFJ#BA0 datasheet, R7FA2E1A92DFJ#BA0 pinout, R7FA2E1A92DFJ#BA0 application, or R7FA2E1A92DFJ#BA0 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-clock domain support (HOCO/LOCO), and hardware-based safety mechanisms for IEC 61508 SIL-2 alignment.

Technical Context

The R7FA2E1A92DFJ#BA0 implements Armv8-M architecture with TrustZone®-enabled secure boot and memory isolation. Its system-level timing relies on independent clock domains: HOCO (up to 32 MHz) for CPU/peripherals and LOCO (32.768 kHz) for RTC/IWDT-enabling deterministic low-power operation without external crystals in many configurations.

Peripheral integration follows Renesas' RA family commonality: Serial Array Unit (SAU) supports three simplified SPI, three simplified I²C, and two UART interfaces plus one LIN-capable UART; TAU timers provide eight 16-bit channels with flexible PWM and capture modes; and DTC/ELC enable autonomous peripheral-to-peripheral data movement without CPU intervention.

Key Specifications

Pinout & Package

Package: 32-pin LQFP (7 mm × 7 mm, 0.8 mm pitch), RoHS-compliant Sn finish, tray packaging (BA0).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA2E1A92DNH#AA0, the R7FA2E1A92DFJ#BA0 offers identical functionality in a larger LQFP package for easier prototyping and thermal management; versus R7FA2E1A92DFJ#BA0, the R7FA2E1A93CFJ#BA0 reduces flash capacity by half while retaining all safety and analog features-ideal for production scaling where firmware size is stable.

Availability

R7FA2E1A92DFJ#BA0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart energy meters, medical wearables, and building automation controllers requiring stable component supply across extended product lifecycles.

Supply support for R7FA2E1A92DFJ#BA0 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, power, and SoC solutions for automotive, industrial, and IoT markets.

The RA0E1 Group-including R7FA2E1A92DFJ#BA0-is designed for cost-sensitive, ultra-low-power embedded applications demanding functional safety, secure boot, and seamless scalability within the RA family ecosystem.

FAQ

What is the maximum operating frequency of the R7FA2E1A92DFJ#BA0?

The R7FA2E1A92DFJ#BA0 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 an external crystal connected to the X1/X2 pins. The device maintains full peripheral functionality-including ADC sampling and UART communication-at this clock rate, and supports dynamic clock switching to lower frequencies for power optimization.

Does the R7FA2E1A92DFJ#BA0 support hardware-based security features?

Yes, the R7FA2E1A92DFJ#BA0 includes multiple hardware security features: Flash Read Protection (FRP) to prevent unauthorized firmware extraction, register write protection (PRCR) to guard critical configuration registers, and a True Random Number Generator (TRNG) for cryptographic key generation. These features are implemented in silicon and do not rely on software-only methods, enabling compliance with IEC 62443-3-3 SL2 requirements.

How many analog input channels does the R7FA2E1A92DFJ#BA0 ADC support?

The R7FA2E1A92DFJ#BA0 integrates a 12-bit successive approximation ADC (ADC12) with support for up to 10 analog input channels. These include dedicated pins AN000 through AN007 and AN021–AN022, plus internal sources such as the on-die temperature sensor and internal reference voltage-enabling simultaneous monitoring of external sensors and device health metrics.

What low-power modes are available on the R7FA2E1A92DFJ#BA0?

The R7FA2E1A92DFJ#BA0 supports multiple low-power modes including Sleep, Deep Sleep, and Stop modes-with typical current consumption as low as 0.25 µA in Stop mode with RTC running. Power gating, clock gating, and peripheral-specific stop controls allow granular power management. The LOCO oscillator remains active in most low-power states, enabling wake-up via RTC alarm or external interrupt without full system restart.

Is the R7FA2E1A92DFJ#BA0 pin-compatible with other RA0E1 series MCUs?

Yes, the R7FA2E1A92DFJ#BA0 is pin-compatible with other 32-pin RA0E1 variants in the same package type-including R7FA2E1A92DNH#AA0 (HWQFN) and R7FA2E1A93CFJ#BA0 (32-KB flash). Pin functions, electrical characteristics, and peripheral mappings are identical across these parts, enabling hardware reuse and firmware portability within the RA0E1 family.