Renesas R7FA6T2BD3CFL#AA1

Overview

R7FA6T2BD3CFL#AA1 from Renesas is an Arm® Cortex®-M23 microcontroller operating at up to 48 MHz, featuring 512-KB dual-bank flash, 48-KB SRAM with ECC/parity, 24-bit Sigma-Delta ADC (4-channel), 12-bit ADC (2-channel), independent power supply RTC, and integrated segment LCD controller for 45-segment × 4-common or 41-segment × 8-common displays. It targets ultra-low-power industrial HMI, battery-powered metering, and safety-aware sensor nodes.

For engineers reviewing the R7FA6T2BD3CFL#AA1 datasheet, R7FA6T2BD3CFL#AA1 pinout, R7FA6T2BD3CFL#AA1 application, or R7FA6T2BD3CFL#AA1 equivalent, key selection criteria include its 100-pin LQFP package, -40°C to +105°C operation, AES-128/256 and TRNG security features, SDADC24 clock source flexibility (PLL-multiplied SOSC), and GPT16×5 timer count for motor control timing.

Technical Context

The R7FA6T2BD3CFL#AA1 implements Armv8-M architecture with Memory Protection Unit (8 regions) and CoreSight™ MTB-M23 trace, supporting secure firmware updates via bank-swap flash. Its dual-clock-domain design isolates RTC and SDADC24 operation using dedicated SOSC (32.768 kHz) and PLL-multiplied clocks, enabling simultaneous high-precision analog acquisition and real-time calendar functions without CPU intervention.

System-level integration includes Event Link Controller (ELC) for autonomous peripheral triggering, Data Transfer Controller (DTC) for zero-CPU DMA transfers, and MACL unit with 24-channel buffer addressing-enabling deterministic signal processing in low-power modes. Safety mechanisms cover SRAM ECC, flash area protection, CAC clock accuracy monitoring, and IWDT with independent 15-kHz oscillator.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch), RoHS-compliant, Pb-free terminal finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA2A2AD3CFP, R7FA6T2BD3CFL#AA1 reduces SDADC24 channel count but retains identical security, RTC, and LCD capabilities-lowering BOM cost for 4-channel applications. Against R7FA4M2AD3CFP, it trades raw performance and connectivity for superior analog precision, lower active power, and smaller footprint in resource-constrained sensing nodes.

Availability

R7FA6T2BD3CFL#AA1 is available at Aetrix Electronics and suitable for industrial HMI panels, smart energy meters, medical sensor nodes, and building automation controllers requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for R7FA6T2BD3CFL#AA1 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 delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT markets, with deep expertise in microcontrollers, analog, and power management.

The RA2A2 group-including R7FA6T2BD3CFL#AA1-is engineered for ultra-low-power, safety-aware applications demanding high-precision analog sensing, secure firmware execution, and integrated human-machine interfaces in harsh environments.

FAQ

What is the maximum operating frequency and core architecture of the R7FA6T2BD3CFL#AA1?

The R7FA6T2BD3CFL#AA1 features an Arm Cortex-M23 core compliant with Armv8-M architecture, operating at a maximum frequency of 48 MHz. It includes an 8-region Memory Protection Unit (MPU), single-cycle integer multiplier, and CoreSight™ MTB-M23 trace capability. This architecture enables efficient execution of secure, real-time firmware while maintaining ultra-low power consumption in battery-operated systems.

Does the R7FA6T2BD3CFL#AA1 support hardware-accelerated cryptography?

Yes, the R7FA6T2BD3CFL#AA1 integrates a dedicated AES engine supporting ECB, CBC, CTR, GCM, CMAC, and CCM cipher modes with 128-bit and 256-bit key lengths. It also includes a True Random Number Generator (TRNG) for cryptographic key derivation. These features are implemented in hardware to offload CPU cycles and ensure side-channel resistant operations essential for secure boot and firmware updates.

How many analog-to-digital converter channels does the R7FA6T2BD3CFL#AA1 provide?

The R7FA6T2BD3CFL#AA1 provides two distinct ADC subsystems: a 24-bit Sigma-Delta ADC (SDADC24) with 4 differential input channels (ANIP0–ANIP3 / ANIN0–ANIN3), and a 12-bit successive-approximation ADC (ADC12) with 2 channels (AN000–AN001). The SDADC24 supports programmable gain amplification and operates with PLL-multiplied SOSC clocking for high-precision, low-noise measurements in sensor applications.

What LCD driving capability does the R7FA6T2BD3CFL#AA1 offer?

The R7FA6T2BD3CFL#AA1 integrates a Segment LCD Controller/Driver (SLCDC) supporting up to 45 segment outputs and 4 common outputs-or 41 segments with 8 commons-configurable via internal voltage boosting, capacitor split, or external resistor division methods. It includes waveform A/B selection, blink control, and VL1–VL4 voltage outputs, enabling direct drive of multiplexed LCDs without external bias circuitry in portable instrumentation.

Is the R7FA6T2BD3CFL#AA1 qualified for extended temperature operation?

Yes, the R7FA6T2BD3CFL#AA1 is rated for operation from -40°C to +105°C ambient temperature, validated across its full specification range. This qualification covers all core functions including flash memory retention, SRAM ECC operation, SDADC24 accuracy, RTC calendar functionality, and LCD drive performance-making it suitable for deployment in industrial control cabinets, outdoor metering enclosures, and automotive under-hood environments.