Renesas R7FA6T2AD3CFM#BA1

Overview

R7FA6T2AD3CFM#BA1 from Renesas is an Arm® Cortex®-M23 microcontroller operating at 48 MHz, featuring 512-KB dual-bank flash memory, 48-KB SRAM with ECC/parity support, a 24-bit Sigma-Delta ADC (7-channel differential input), and integrated segment LCD controller supporting up to 45 segments × 4 commons - designed for ultra-low-power industrial HMI and metering applications.

For engineers reviewing the R7FA6T2AD3CFM#BA1 datasheet, R7FA6T2AD3CFM#BA1 pinout, R7FA6T2AD3CFM#BA1 application, or R7FA6T2AD3CFM#BA1 equivalent, key selection considerations include its independent power supply RTC, AES-128/256 encryption engine, SDADC24 clocking via PLL-multiplied 32.768 kHz SOSC, and 64-pin LQFP package with 39 GPIOs including 3 input-only and 1 output-only pins.

Technical Context

This MCU implements the Armv8-M architecture with Memory Protection Unit (8 regions), debug via SW-DP, and safety features including SRAM ECC, flash area protection, ADC self-diagnosis, and Clock Frequency Accuracy Measurement Circuit (CAC). It supports bank-swap firmware updates and Memory Mirror Function (MMF) for flexible code relocation.

The analog subsystem integrates two independent A/D converters: a 12-bit SAR ADC (4 channels) and a 24-bit Sigma-Delta ADC (SDADC24) with programmable gain amplifier, phase adjustment, digital filtering, and high-pass filtering - all synchronized to a dedicated PLL clock derived from the 32.768 kHz sub-oscillator.

Key Specifications

Pinout & Package

Package: 64-pin LQFP (10 mm × 10 mm, 0.5 mm pitch), operating temperature range −40°C to +105°C.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA6T2AD3CFM#BA1, R7FA2A2BD3CFM reduces analog channel count and LCD flexibility for lower BOM cost, while R7FA4M2AD3CFM trades metrology peripherals for enhanced compute and connectivity - making R7FA6T2AD3CFM#BA1 optimal for integrated HMI+metrology designs.

Availability

R7FA6T2AD3CFM#BA1 is available at Aetrix Electronics and suitable for industrial energy metering, smart utility HMI, portable medical monitoring, and asset tracking terminals requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for R7FA6T2AD3CFM#BA1 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 delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT markets, with decades of MCU innovation and functional safety expertise.

The RA2A2 group - including R7FA6T2AD3CFM#BA1 - is engineered for ultra-low-power, high-integration applications demanding precision analog, secure firmware execution, and human-machine interface capabilities in harsh environments.

FAQ

What is the maximum operating frequency and core architecture of the R7FA6T2AD3CFM#BA1?

The R7FA6T2AD3CFM#BA1 features an Arm Cortex-M23 core compliant with the Armv8-M architecture and operates at a maximum frequency of 48 MHz. It includes an Arm Memory Protection Unit (MPU) with 8 configurable regions, debug support via SW-DP, and hardware-accelerated integer multiply/divide. This architecture delivers efficient, secure, and deterministic real-time performance ideal for certified industrial applications.

Does the R7FA6T2AD3CFM#BA1 support both 12-bit and 24-bit analog-to-digital conversion?

Yes, the R7FA6T2AD3CFM#BA1 integrates two independent ADC subsystems: a 12-bit successive approximation ADC (ADC12) with 4 input channels and temperature sensor support, and a 24-bit Sigma-Delta ADC (SDADC24) with 7 differential or single-ended channels. The SDADC24 includes a programmable gain amplifier, digital filtering, and high-pass filtering - enabling high-resolution metrology without external signal conditioning.

How does the segment LCD controller (SLCDC) in the R7FA6T2AD3CFM#BA1 support different display configurations?

The R7FA6T2AD3CFM#BA1's SLCDC supports up to 45 segment outputs and 4 common outputs (or 41 segments × 8 commons) with selectable drive methods: internal voltage boosting, capacitor split, or external resistor division. It offers waveform A/B selection, blink control, and VL1–VL4 voltage control - allowing direct drive of multiplexed LCDs in industrial meters and HMI panels without external bias ICs.

What security and safety features are implemented in the R7FA6T2AD3CFM#BA1?

The R7FA6T2AD3CFM#BA1 includes AES-128/256 encryption (ECB/CBC/CTR/GCM/CMAC/CCM), True Random Number Generator (TRNG), SRAM ECC/parity, flash area protection, ADC self-diagnosis, Clock Frequency Accuracy Measurement Circuit (CAC), CRC, Data Operation Circuit (DOC), and register write protection. These features meet IEC 61508 SIL2 and ISO 26262 ASIL-B readiness requirements for functional safety.

What package type and pin count does the R7FA6T2AD3CFM#BA1 use?

The R7FA6T2AD3CFM#BA1 is supplied in a 64-pin LQFP package (10 mm × 10 mm, 0.5 mm pitch) rated for operation from −40°C to +105°C. It provides 39 general-purpose I/O pins, including 3 input-only and 1 output-only pins, with 5-V tolerance on selected signals and N-channel open-drain capability on 32 pins - optimized for industrial interfacing and layout simplicity.