Renesas R7FA2L1A92DFL#AA0

Overview

R7FA2L1A92DFL#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 R7FA2L1A92DFL#AA0 datasheet, R7FA2L1A92DFL#AA0 pinout, R7FA2L1A92DFL#AA0 application, or R7FA2L1A92DFL#AA0 equivalent, this page delivers verified specifications, package mapping (48-pin LQFP), functional pin roles, real-world use cases, and two validated alternative parts with documented technical and application differences.

Technical Context

The R7FA2L1A92DFL#AA0 implements the Armv8-M architecture with Memory Protection Unit (8 regions) and CoreSight™ MTB-M23 trace, enabling secure, deterministic real-time operation. Its system-level features include Event Link Controller (ELC) for CPU-free peripheral coordination, Data Transfer Controller (DTC) for autonomous memory transfers, and dual watchdogs (WDT + IWDT) with independent clock sources for fail-safe recovery.

Analog subsystem integration includes a 12-bit ADC with 13 selectable input channels (including temperature sensor and internal reference), a 12-bit DAC, two low-power comparators (ACMPLP), and CTSU2 supporting up to 32 touch electrodes. Power management supports multiple low-power modes, switching regulator (DCDC), and precise voltage monitoring via three LVD detectors.

Key Specifications

Pinout & Package

Package: 48-pin LQFP (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant Sn finish, 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 R7FA2L1A92DFL#AA0, the R7FA2L1AB2DFL#AA0 offers double flash capacity without hardware changes, while the STM32L552REY6TR trades integrated peripherals for higher security certification - making the former ideal for cost-sensitive scaling and the latter for certified secure systems.

Availability

R7FA2L1A92DFL#AA0 is available at Aetrix Electronics and suitable for smart thermostats, industrial sensor nodes, home appliance control panels, and portable medical interfaces requiring stable component supply across multi-year production cycles.

Supply support for R7FA2L1A92DFL#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 is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RA2L1 group is designed for ultra-low-power, cost-sensitive embedded applications demanding integrated analog, human-machine interface, and functional safety - targeting battery-operated and energy-conscious systems.

FAQ

What is the maximum operating frequency and core architecture of the R7FA2L1A92DFL#AA0?

The R7FA2L1A92DFL#AA0 uses an Arm Cortex-M23 core based on the Armv8-M architecture and operates at a maximum frequency of 48 MHz. This core includes an 8-region Memory Protection Unit (MPU), single-cycle integer multiplier, and CoreSight™ MTB-M23 trace capability - all confirmed in the R01DS0385EJ0160 datasheet Rev.1.60. The R7FA2L1A92DFL#AA0 achieves deterministic real-time performance while maintaining ultra-low power consumption.

Does the R7FA2L1A92DFL#AA0 support CAN communication, and what external components are required?

Yes, the R7FA2L1A92DFL#AA0 integrates a CAN 2.0B module supporting both standard and extended frames with up to 32 mailboxes. However, it requires an external CAN transceiver (e.g., TJA1042 or SN65HVD230) connected to CRX0 and CTX0 pins. The R7FA2L1A92DFL#AA0 does not include physical layer drivers - this separation ensures flexibility in bus voltage and ESD protection selection.

How many capacitive touch channels does the R7FA2L1A92DFL#AA0 support, and what is the role of the TSCAP pin?

The R7FA2L1A92DFL#AA0 supports up to 32 capacitive touch electrodes via its CTSU2 peripheral. The TSCAP pin serves as a secondary power supply for the touch driver circuitry, improving noise immunity and stability - especially critical in wet or high-noise environments. This function is explicitly defined in Section 1.5 of the R01DS0385EJ0160 datasheet for the R7FA2L1A92DFL#AA0.

What are the memory resources available on the R7FA2L1A92DFL#AA0, and how is data flash endurance specified?

The R7FA2L1A92DFL#AA0 includes 128 KB of code flash memory, 8 KB of data flash memory rated for 100,000 program/erase cycles, and 32 KB of SRAM with optional ECC protection. The data flash is specifically allocated for parameter storage, calibration data, or firmware update staging - distinct from code flash and optimized for frequent rewrites. This allocation is confirmed in Table 1.2 and Section 1.1 of the R01DS0385EJ0160 datasheet for the R7FA2L1A92DFL#AA0.

Is the R7FA2L1A92DFL#AA0 pin-compatible with other RA2L1 family members, and what package options share the same pinout?

Yes, the R7FA2L1A92DFL#AA0 is pin-compatible with all RA2L1 devices in the 48-pin LQFP (FL) and 48-pin HWQFN (NE) packages - including R7FA2L1AB2DFL#AA0 and R7FA2L1A92DNE#AA0. Pin assignments match exactly across these variants, enabling direct substitution where flash size or temperature grade permits. This compatibility is documented in Figure 1.6 and Figure 1.7 of the R01DS0385EJ0160 datasheet for the R7FA2L1A92DFL#AA0.