Renesas R7FA6T2AB3CNE#AA1

Overview

R7FA6T2AB3CNE#AA1 from Renesas is an Arm® Cortex®-M23 microcontroller designed for ultra-low-power industrial and metering applications, featuring a 48 MHz CPU, 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 45 segments × 4 commons.

For engineers reviewing the R7FA6T2AB3CNE#AA1 datasheet, R7FA6T2AB3CNE#AA1 pinout, R7FA6T2AB3CNE#AA1 application, or R7FA6T2AB3CNE#AA1 equivalent, this MCU delivers certified security (AES-128/256, TRNG), functional safety support (ECC SRAM, CAC, IWDT, ADC self-diagnosis), and mixed-signal integration ideal for smart utility meters, portable medical devices, and battery-powered HMI systems requiring long-term accuracy and low active/idle power.

Technical Context

The R7FA6T2AB3CNE#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 seamless firmware updates without system interruption.

It integrates two asynchronous timer subsystems-AGT (16-bit × 8) and AGTW (32-bit × 2)-plus six GPT16 PWM timers with POEG output disable, enabling precise motor control and event-driven low-power sequencing. The SDADC24 uses PLL-multiplied clock (from 32.768 kHz SOSC) for high-resolution sensor acquisition at 3.906–7.813 kHz sampling rates.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (14 mm × 14 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 R7FA6T2AB3CNE#AA1, R7FA2A2BD3CFP offers identical packaging and core peripherals at lower cost but reduced RTC event capture capability, while R7FA6M5BH3CFC#AA0 trades integrated analog/HMI features for raw processing power and memory-making it unsuitable for standalone metering but viable for host-controlled sensor nodes.

Availability

R7FA6T2AB3CNE#AA1 is available at Aetrix Electronics and suitable for smart utility metering, portable medical diagnostics, industrial HMI panels, and environmental monitoring systems requiring stable component supply across extended product lifecycles.

Supply support for R7FA6T2AB3CNE#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 specializing in microcontrollers, analog, and power solutions for automotive, industrial, and IoT markets.

The RA2A2 group-including R7FA6T2AB3CNE#AA1-is engineered for ultra-low-power, high-integrity applications such as utility metering and portable medical devices, integrating metrology-grade analog, secure firmware execution, and long-life RTC functionality.

FAQ

What is the maximum operating frequency and core architecture of the R7FA6T2AB3CNE#AA1?

The R7FA6T2AB3CNE#AA1 operates at a maximum frequency of 48 MHz and is built on the Arm Cortex-M23 core implementing the Armv8-M architecture. It includes an 8-region Memory Protection Unit (MPU), single-cycle integer multiplier, and CoreSight™ MTB-M23 trace capability-enabling secure, deterministic real-time operation in safety-critical environments. This architecture underpins the R7FA6T2AB3CNE#AA1's suitability for certified metering and medical applications.

Does the R7FA6T2AB3CNE#AA1 support hardware-accelerated cryptography?

Yes, the R7FA6T2AB3CNE#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) compliant with NIST SP 800-90B. These features are implemented in hardware and accessible via Renesas' Secure Crypto Engine (SCE) API, enabling FIPS-aligned secure boot and data encryption without CPU overhead-essential for R7FA6T2AB3CNE#AA1 deployments in regulated industries.

What analog-to-digital converter capabilities does the R7FA6T2AB3CNE#AA1 provide?

The R7FA6T2AB3CNE#AA1 integrates two independent 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, sampling rates of 3.906 kHz or 7.813 kHz, and uses a PLL-multiplied clock derived from the 32.768 kHz sub-oscillator-ensuring high-precision, low-noise acquisition for R7FA6T2AB3CNE#AA1 metrology applications.

How does the R7FA6T2AB3CNE#AA1 manage power in battery-operated systems?

The R7FA6T2AB3CNE#AA1 supports multiple low-power modes including Deep Software Standby with sub-μA current draw, enabled by its 16-bit AGT and 32-bit AGTW timers that operate asynchronously from the main clock. It features independent power domains (VCC, VRTC, AVCC), Low Voltage Detection (LVD) on VCC/VRTC/EXLVDVBAT pins with configurable thresholds, and a 1.6–5.5 V wide operating voltage range-allowing direct Li-ion or coin-cell operation. These features collectively maximize runtime for R7FA6T2AB3CNE#AA1 in portable and remote sensing applications.

Is the R7FA6T2AB3CNE#AA1 pin-compatible with other RA2A2 series MCUs?

Yes, the R7FA6T2AB3CNE#AA1 is pin-compatible with other 100-pin LQFP variants in the RA2A2 family, including R7FA2A2AD3CFP and R7FA2A2BD3CFP. All share identical mechanical footprint, power pin layout (VCC/VSS/AVCC/AVSS), debug interface (SWDIO/SWCLK), and core peripheral pin mappings (SCI, I2C, SPI, GPT). However, SDADC24 channel count (4 vs. 7) and RTCIC pin availability differ-requiring minor schematic review but no PCB redesign when migrating within the same package variant.