Renesas R7FA6T2BD3CFP#AA1

Overview

R7FA6T2BD3CFP#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), and integrated Segment LCD controller for low-power HMI applications in industrial metering and portable medical devices.

For engineers reviewing the R7FA6T2BD3CFP#AA1 datasheet, R7FA6T2BD3CFP#AA1 pinout, R7FA6T2BD3CFP#AA1 application, or R7FA6T2BD3CFP#AA1 equivalent, key selection criteria include its 100-pin LQFP package, independent RTC with VRTC supply, AES-128/256 security engine, SDADC24 clocking via PLL from 32.768 kHz SOSC, and support for BLDC motor control via six GPT16 timers with hall sensor inputs.

Technical Context

The R7FA6T2BD3CFP#AA1 implements the Armv8-M architecture with Memory Protection Unit (8 regions) and CoreSight™ MTB-M23 trace, enabling secure, deterministic real-time operation. Its dual-bank flash supports Bank Swap for robust firmware updates without runtime interruption.

System-level timing integrates multiple oscillators - 1–20 MHz MOSC, 32.768 kHz SOSC, and HOCO (24/32/48/64 MHz) - with Clock Frequency Accuracy Measurement Circuit (CAC) for autonomous clock validation and Independent Watchdog Timer (IWDT) driven by a dedicated 15 kHz oscillator for fail-safe recovery.

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 R7FA6T2AD3CFP#AA1 and R7FA4M2AD3CFP#AA0, the R7FA6T2BD3CFP#AA1 delivers optimal balance of ultra-low-power operation, 24-bit measurement fidelity, and hardware-accelerated security - making it uniquely suited for battery-constrained, safety-critical sensing endpoints where channel count is bounded at four.

Availability

R7FA6T2BD3CFP#AA1 is available at Aetrix Electronics and suitable for industrial energy metering, portable medical sensors, smart building HVAC controls, and low-power industrial HMI panels requiring stable component supply across extended product lifecycles.

Supply support for R7FA6T2BD3CFP#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 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 R7FA6T2BD3CFP#AA1 - is engineered for ultra-low-power, high-integrity applications demanding precision analog, secure firmware execution, and human-machine interface integration in harsh environments.

FAQ

What is the maximum operating frequency and core architecture of the R7FA6T2BD3CFP#AA1?

The R7FA6T2BD3CFP#AA1 features an Arm Cortex-M23 core compliant with the Armv8-M architecture and operates 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 for secure, deterministic real-time execution. This architecture underpins the R7FA6T2BD3CFP#AA1's suitability for functional safety and security-critical applications.

Does the R7FA6T2BD3CFP#AA1 support hardware-accelerated cryptography?

Yes, the R7FA6T2BD3CFP#AA1 integrates a dedicated AES engine supporting ECB, CBC, CTR, GCM, CMAC, and CCM 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 and accessible via Renesas' Secure Crypto Engine API, enabling efficient, side-channel-resistant encryption within the R7FA6T2BD3CFP#AA1's trusted execution environment.

How many analog-to-digital converter channels does the R7FA6T2BD3CFP#AA1 provide, and what are their resolutions?

The R7FA6T2BD3CFP#AA1 integrates two distinct ADC subsystems: 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. The SDADC24 supports programmable gain amplification and sampling rates of 3.906/4.166 kHz or 7.813/8.333 kHz, while the ADC12 includes internal reference and temperature sensor inputs - both are independently configurable within the R7FA6T2BD3CFP#AA1's analog subsystem.

What LCD driving capability does the R7FA6T2BD3CFP#AA1 offer?

The R7FA6T2BD3CFP#AA1 includes a Segment LCD Controller/Driver (SLCDC) supporting up to 45 segment signals and 4 common signals (or 41 segments and 8 commons). It provides three voltage-generation methods - internal charge-pump boosting, capacitor-split, and external resistor division - and supports waveform A/B selection and blinking control. This integrated SLCDC eliminates external display drivers and reduces BOM cost in the R7FA6T2BD3CFP#AA1-based HMI designs.

What power supply configurations and low-power features does the R7FA6T2BD3CFP#AA1 support?

The R7FA6T2BD3CFP#AA1 operates from 1.6 V to 5.5 V on VCC, with separate VRTC and AVCC/AVSS domains for isolated RTC and analog operation. It includes Low Voltage Detection (LVD) on VCC, EXLVDVBAT, VRTC, and EXLVD pins with programmable thresholds, multiple low-power modes (including deep software standby), and asynchronous timers (AGT/AGTW) that run from sub-kHz clocks. These features enable sub-µA retention current and rapid wake-up in battery-powered R7FA6T2BD3CFP#AA1 deployments.