Renesas R7FA2E1A92DBU#AC0

Overview

R7FA2E1A92DBU#AC0 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, and independent watchdog timer. It targets battery-powered industrial sensors and smart metering endpoints requiring extended runtime and functional safety compliance.

For engineers reviewing the R7FA2E1A92DBU#AC0 datasheet, R7FA2E1A92DBU#AC0 pinout, R7FA2E1A92DBU#AC0 application, or R7FA2E1A92DBU#AC0 equivalent, this page delivers verified package mapping (32-pin LQFP), confirmed pin functions (including SWDIO/SWCLK debug, SAU/UART/IICA interfaces, and AN000–AN007 analog inputs), safety-critical timing specs (IWDT with LOCO clock source), and real-world use-case alignment for low-voltage embedded control.

Technical Context

The R7FA2E1A92DBU#AC0 implements Armv8-M architecture with single-cycle integer multiplier and 19-cycle divider, executing from on-chip flash with configurable wait states. Its system-level timing relies on multiple clock sources: HOCO (24/32 MHz), MOCO (4 MHz), LOCO (32.768 kHz), and external crystal (1–20 MHz), all supported by hardware clock trim and fail-safe switching logic.

Safety integrity is enforced via hardware-level mechanisms: SRAM parity error detection triggers automatic reset; flash area protection blocks unauthorized writes; ADC self-diagnosis validates conversion path integrity; and illegal memory access detection halts execution on invalid address fetches - all operating independently of software supervision.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA2E1A92DBU#AC0, the R7FA2E1A92DFB#AC0 offers identical functionality in a smaller QFN package but demands layout changes, while the R7FA4M1AB3CFM#AA0 trades ultra-low power and integrated safety for raw performance and expanded memory - making the R7FA2E1A92DBU#AC0 optimal for battery longevity and functional safety in compact industrial endpoints.

Availability

R7FA2E1A92DBU#AC0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart energy meters, home automation hubs, and medical wearable monitors requiring stable component supply across extended product lifecycles.

Supply support for R7FA2E1A92DBU#AC0 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, and power solutions for industrial, automotive, and IoT markets.

The RA0E1 group is designed for cost-sensitive, ultra-low-power embedded applications demanding functional safety certification (IEC 61508), with R7FA2E1A92DBU#AC0 delivering optimized balance of performance, security, and energy efficiency in 32-pin LQFP form factor.

FAQ

What is the maximum operating frequency and core architecture of the R7FA2E1A92DBU#AC0?

The R7FA2E1A92DBU#AC0 features an Arm Cortex-M23 core implementing the Armv8-M architecture, with a maximum operating frequency of 32 MHz. It includes a single-cycle integer multiplier and 19-cycle integer divider, supporting deterministic real-time execution. This specification is confirmed in the R01DS0427EJ0120 datasheet Rev. 1.20, Section 1.1 Table 1.1.

Does the R7FA2E1A92DBU#AC0 include hardware safety features required for industrial certification?

Yes, the R7FA2E1A92DBU#AC0 integrates multiple hardware safety mechanisms: SRAM parity error detection, flash area protection, ADC self-diagnosis, Cyclic Redundancy Check (CRC-32/CCITT), Independent Watchdog Timer (IWDT) clocked by LOCO, GPIO readback level detection, and illegal memory access detection. These features collectively support IEC 61508 SIL2 compliance as documented in Section 1.1 and Table 1.3 of the R01DS0427EJ0120 datasheet.

What analog peripherals are available on the R7FA2E1A92DBU#AC0 and how many input channels do they support?

The R7FA2E1A92DBU#AC0 includes a 12-bit successive approximation A/D Converter (ADC12) with up to 10 selectable analog input channels (AN000–AN007, AN021–AN022) and an on-die Temperature Sensor (TSN) whose output feeds directly into the ADC12. This configuration is explicitly stated in Tables 1.8 and 1.14 of the R01DS0427EJ0120 datasheet Rev. 1.20.

Which communication interfaces does the R7FA2E1A92DBU#AC0 support and are any LIN-capable?

The R7FA2E1A92DBU#AC0 supports Serial Array Unit (SAU) with up to three simplified SPI, three simplified I²C, two UART, and one UART with LIN-bus support; plus dedicated Serial Interface UARTA (1 channel) and I²C Bus Interface IICA (1 channel). The LIN capability is assigned to one SAU UART channel, as confirmed in Table 1.7 and Section 1.4 of the R01DS0427EJ0120 datasheet.

What package type and pin count does the R7FA2E1A92DBU#AC0 use, and is it RoHS-compliant?

The R7FA2E1A92DBU#AC0 uses a 32-pin LQFP package (7 mm × 7 mm, 0.8 mm pitch), identified by package code "FJ" per Renesas part numbering scheme in Figure 1.2 of the R01DS0427EJ0120 datasheet. The "#AC0" suffix confirms Pb-free Sn (tin-only) terminal finish, meeting RoHS Directive 2011/65/EU requirements.