Renesas R7FA2L1A92DFP#AA0

Overview

R7FA2L1A92DFP#AA0 from Renesas is an ultra-low-power 32-bit Arm® Cortex®-M23 microcontroller operating at up to 48 MHz, featuring 128 KB code flash, 32 KB SRAM, 12-bit ADC/DAC, Capacitive Touch Sensing Unit (CTSU2), CAN interface, and integrated security (AES128/256, TRNG). It targets battery-powered HMI, industrial sensors, and smart home controllers requiring robust timing, analog sensing, and secure communication.

For engineers reviewing the R7FA2L1A92DFP#AA0 datasheet, R7FA2L1A92DFP#AA0 pinout, R7FA2L1A92DFP#AA0 application, or R7FA2L1A92DFP#AA0 equivalent, this page delivers verified specifications, LQFP-100 package mapping, functional pin roles, real-world use cases in touch-enabled control panels and CAN-based sensor nodes, and two validated alternative parts with documented technical and application differences.

Technical Context

The R7FA2L1A92DFP#AA0 implements the Armv8-M architecture with Memory Protection Unit (8 regions), supports dual-clock domain operation (HOCO/MOCO/LOCO/SOSC), and integrates a dedicated Event Link Controller (ELC) for CPU-free peripheral coordination. Its CTSU2 enables low-power capacitive touch detection with noise immunity, while the CAN module complies with ISO 11898-1 (CAN 2.0B) and supports 32 mailboxes with FIFO mode.

It includes safety mechanisms such as ECC in SRAM, ADC self-diagnosis, Clock Frequency Accuracy Measurement Circuit (CAC), and Independent Watchdog Timer (IWDT) with dedicated 15 kHz oscillator. Power management features include multiple low-power modes, switching regulator (DCDC), and 1.6–5.5 V wide operating voltage range.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (PLQP0100KB-B), 14 mm × 14 mm, 0.5 mm pitch, exposed pad recommended to be connected to VSS.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA2L1AB2DFP#AA0, the R7FA2L1A92DFP#AA0 trades flash capacity for lower cost and smaller footprint in fixed-function deployments; versus STM32L562VEJ6, it delivers higher integration (CAN + CTSU) and simpler certification path for industrial HMI, at the expense of advanced TrustZone isolation.

Availability

R7FA2L1A92DFP#AA0 is available at Aetrix Electronics and suitable for industrial HMI panels, smart building sensor nodes, and automotive body control modules requiring stable component supply, long lifecycle assurance, and RoHS-compliant sourcing.

Supply support for R7FA2L1A92DFP#AA0 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 leader in microcontrollers, analog, power, and SoC products, serving automotive, industrial, infrastructure, and IoT markets with scalable, energy-efficient silicon solutions.

The RA2L1 group is designed specifically for ultra-low-power, cost-sensitive industrial and consumer HMI applications, emphasizing integrated capacitive touch, analog peripherals, functional safety, and seamless migration across the RA family.

FAQ

What is the maximum operating frequency of the R7FA2L1A92DFP#AA0?

The R7FA2L1A92DFP#AA0 operates at a maximum frequency of 48 MHz using its Arm Cortex-M23 core. This speed is achievable with the high-speed on-chip oscillator (HOCO) or external crystal (MOSC), and is supported across the full industrial temperature range (-40°C to +85°C). The R7FA2L1A92DFP#AA0 maintains timing integrity at this frequency due to integrated clock accuracy measurement (CAC) and memory protection units.

Does the R7FA2L1A92DFP#AA0 include a CAN controller, and what standards does it support?

Yes, the R7FA2L1A92DFP#AA0 integrates a single CAN module compliant with ISO 11898-1 (CAN 2.0A and CAN 2.0B), supporting both standard (11-bit) and extended (29-bit) identifiers. It provides 32 configurable mailboxes with FIFO mode and requires an external CAN transceiver (e.g., TJA1042) for physical layer interfacing. The R7FA2L1A92DFP#AA0 does not include a built-in transceiver.

What package type and pin count does the R7FA2L1A92DFP#AA0 use?

The R7FA2L1A92DFP#AA0 uses a 100-pin LQFP package (PLQP0100KB-B), measuring 14 mm × 14 mm with 0.5 mm pitch. It provides 82 general-purpose I/O pins, 5-V tolerant inputs on selected pins, and dedicated pins for SWD debug, CAN, CTSU2, ADC/DAC, and DCDC regulation. The exposed die pad is recommended to connect to VSS.

How does the CTSU2 capacitive touch unit in the R7FA2L1A92DFP#AA0 differ from basic GPIO-based touch detection?

The CTSU2 in the R7FA2L1A92DFP#AA0 is a dedicated hardware peripheral with spread-spectrum modulation, noise cancellation, and auto-calibration - enabling reliable touch detection through 3 mm glass or plastic overlays, even under EMI or wet-finger conditions. Unlike GPIO-based methods, CTSU2 requires no external RC components and delivers consistent performance across voltage/temperature variations. The R7FA2L1A92DFP#AA0 supports up to 32 independent touch channels.

What security features are implemented in hardware on the R7FA2L1A92DFP#AA0?

The R7FA2L1A92DFP#AA0 includes AES128/256 encryption engines, a True Random Number Generator (TRNG), SRAM ECC, Flash area protection, register write protection, and a Clock Frequency Accuracy Measurement Circuit (CAC) for runtime clock validation. These features collectively support secure boot, encrypted firmware updates, and functional safety diagnostics - all implemented in dedicated hardware blocks without CPU overhead. The R7FA2L1A92DFP#AA0 does not include a secure enclave or TrustZone.