Renesas R7FA6T2BD3CFM#BA0

Overview

R7FA6T2BD3CFM#BA0 from Renesas is an ultra-low-power 32-bit 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 supporting up to 41 segments × 8 commons - designed for battery-powered industrial meters and portable medical sensors.

For engineers reviewing the R7FA6T2BD3CFM#BA0 datasheet, R7FA6T2BD3CFM#BA0 pinout, R7FA6T2BD3CFM#BA0 application, or R7FA6T2BD3CFM#BA0 equivalent, key selection criteria include its 64-pin LQFP package, -40°C to +105°C extended temperature rating, 1.6–5.5 V wide operating voltage, AES-128/256 security engine, and dual SDADC24/ADC12 analog subsystem for high-precision sensor signal acquisition in space-constrained embedded systems.

Technical Context

This MCU implements the Armv8-M architecture with Memory Protection Unit (MPU) supporting 8 regions, debug via SW-DP, and safety features including SRAM ECC, flash area protection, CAC clock accuracy monitoring, and independent watchdog (IWDT) with dedicated 15-kHz oscillator. Its low-power operation leverages multiple on-chip oscillators (HOCO/MOCO/LOCO/SOSC), Event Link Controller (ELC), and Data Transfer Controller (DTC) to minimize CPU intervention.

The analog subsystem integrates two independent A/D converters: a 24-bit Sigma-Delta ADC (SDADC24) with programmable gain amplifier, differential/single-ended inputs, and PLL-derived clocking for noise-immune measurements; and a 12-bit SAR ADC (ADC12) with internal reference and temperature sensor input. The SLCDC supports three LCD drive methods (internal boost, capacitor split, external resistor) and configurable waveform A/B output.

Key Specifications

Pinout & Package

Package: 64-pin LQFP (PLQP0064KB-C), 10 mm × 10 mm, 0.5 mm pitch, exposed pad not specified. Pin count matches RA2A2 family 64-pin variant with reduced peripheral count versus 100-pin versions.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA2A2BD3CFN, R7FA6T2BD3CFM#BA0 reduces pin count and peripheral count for cost-sensitive space-constrained designs; compared with R7FA6T2AD3CFM#BA0, it trades SDADC24 channel count for lower BOM cost and simplified analog routing - both retain identical security, RTC, and low-power architecture.

Availability

R7FA6T2BD3CFM#BA0 is available at Aetrix Electronics and suitable for industrial flow meters, portable ECG monitors, smart gas detectors, and energy harvesting sensor nodes requiring stable component supply across automotive-grade temperature ranges and long lifecycle support.

Supply support for R7FA6T2BD3CFM#BA0 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, power, and SoC solutions for industrial, automotive, and enterprise applications.

The RA2A2 Group targets ultra-low-power, secure, and analog-rich embedded systems - R7FA6T2BD3CFM#BA0 specifically addresses cost-optimized, space-constrained applications requiring high-precision measurement, independent RTC, and robust security in extended temperature environments.

FAQ

What is the maximum operating frequency and core architecture of the R7FA6T2BD3CFM#BA0?

The R7FA6T2BD3CFM#BA0 features an Arm Cortex-M23 core operating at up to 48 MHz, implementing the Armv8-M architecture with Memory Protection Unit (MPU) supporting 8 memory regions. It includes debug capabilities via SW-DP and supports TrustZone-ready secure execution, making it suitable for applications requiring both performance and isolation between trusted and untrusted code domains.

Does the R7FA6T2BD3CFM#BA0 support hardware encryption and random number generation?

Yes, the R7FA6T2BD3CFM#BA0 integrates a dedicated AES engine supporting ECB, CBC, CTR, GCM, CMAC, and CCM modes with 128- and 256-bit key lengths, plus a True Random Number Generator (TRNG). These features enable secure boot, encrypted communication, and cryptographically strong key derivation - all implemented in hardware to avoid software timing side channels.

How many analog-to-digital converter channels does the R7FA6T2BD3CFM#BA0 provide, and what are their types?

The R7FA6T2BD3CFM#BA0 provides two independent A/D converters: a 24-bit Sigma-Delta ADC (SDADC24) with 4 differential or single-ended input channels, and a 12-bit successive approximation ADC (ADC12) with 2 input channels. Both support internal temperature sensor input, and SDADC24 includes a programmable gain amplifier and PLL-derived clocking for high-precision, low-noise measurements.

What LCD driving capability does the R7FA6T2BD3CFM#BA0 offer, and how is it configured?

The R7FA6T2BD3CFM#BA0 integrates a Segment LCD Controller (SLCDC) supporting up to 41 segment outputs and 8 common outputs. It offers three drive methods - internal voltage boosting, capacitor split, and external resistor division - with selectable VL1/VL2 reference modes. Waveform A or B can be chosen, and blinking functionality is supported, enabling flexible integration with custom LCD glass in portable instrumentation.

What package type and pin count does the R7FA6T2BD3CFM#BA0 use, and what are its key I/O characteristics?

The R7FA6T2BD3CFM#BA0 uses a 64-pin LQFP package (10 mm × 10 mm, 0.5 mm pitch) with 39 general-purpose I/O pins, including 3 input-only and 1 output-only pins. It features 2 general-purpose 5-V tolerant pins and 2 additional 5-V tolerant RTCIC pins (P400–P401), along with N-channel open-drain outputs on 32 pins and pull-up resistors on 37 pins - optimized for compact, low-cost industrial sensor nodes.