Renesas R7FA6T2AD3CFM#AA1

Overview

R7FA6T2AD3CFM#AA1 from Renesas is an Arm® Cortex®-M23 microcontroller designed for ultra-low-power industrial and metering applications requiring high-precision analog sensing, LCD display control, and secure firmware execution. It operates at up to 48 MHz, integrates 512-KB dual-bank flash, 48-KB SRAM with ECC/parity, a 24-bit Sigma-Delta ADC (7-channel differential), 12-bit ADC, independent power-supply RTC, and AES-128/256 encryption.

For engineers reviewing the R7FA6T2AD3CFM#AA1 datasheet, R7FA6T2AD3CFM#AA1 pinout, R7FA6T2AD3CFM#AA1 application, or R7FA6T2AD3CFM#AA1 equivalent, this device supports low-voltage detection across VCC/VRTC/EXLVDVBAT rails, segment LCD driving (up to 45 seg × 4 com), and hardware-accelerated multiply-accumulate operations with 24-channel buffer addressing - critical for real-time sensor fusion and energy metering firmware.

Technical Context

The R7FA6T2AD3CFM#AA1 implements the Armv8-M architecture with Memory Protection Unit (8 regions) and CoreSight™ MTB-M23 trace, enabling certified functional safety designs. Its dual-bank flash supports Bank Swap for seamless firmware updates without runtime interruption.

Analog subsystem integration includes SDADC24 with programmable gain amplifier, PLL-multiplied clock for sigma-delta conversion (32.768 kHz → 12.0/12.8 MHz), and independent AVCC/AVSS/AVCM/AREGC/AVRT supply domains - ensuring noise-immune 24-bit measurement accuracy in noisy industrial environments.

Key Specifications

Pinout & Package

64-pin LQFP (PLQP0064KB-C), 10 mm × 10 mm, 0.5 mm pitch, RoHS-compliant Pb-free termination.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA2A2BD3CFM, R7FA6T2AD3CFM#AA1 delivers enhanced analog channel count and LCD drive capacity for higher-fidelity metering; versus R7FA4M2AD3CFM, it trades connectivity and speed for superior sigma-delta resolution and ultra-low-power RTC/analog operation.

Availability

R7FA6T2AD3CFM#AA1 is available at Aetrix Electronics and suitable for smart metering, industrial HMI, portable medical devices, and building automation nodes requiring stable component supply across extended product lifecycles.

Supply support for R7FA6T2AD3CFM#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.

The RA2A2 group - including R7FA6T2AD3CFM#AA1 - is engineered for ultra-low-power, high-precision analog applications such as energy metering, sensor hubs, and human-machine interfaces with integrated LCD drivers.

FAQ

What is the maximum operating frequency of the R7FA6T2AD3CFM#AA1?

The R7FA6T2AD3CFM#AA1 features an Arm Cortex-M23 core with a maximum operating frequency of 48 MHz. This speed is achieved using the high-speed on-chip oscillator (HOCO) or PLL-multiplied clock sources, and is validated across the full -40°C to +105°C industrial temperature range. The R7FA6T2AD3CFM#AA1 maintains timing compliance under all supported voltage (1.6–5.5 V) and temperature conditions specified in the R01DS0418EJ0130 datasheet.

Does the R7FA6T2AD3CFM#AA1 support hardware-based AES encryption?

Yes, the R7FA6T2AD3CFM#AA1 integrates a dedicated AES engine supporting ECB, CBC, CTR, GCM, CMAC, and CCM cipher modes with 128-bit and 256-bit key lengths. Encryption/decryption operations execute in hardware without CPU intervention, preserving real-time performance in secure boot or data-at-rest applications. The R7FA6T2AD3CFM#AA1 also includes a True Random Number Generator (TRNG) to seed cryptographic keys securely.

How many analog input channels does the 24-bit SDADC24 support on the R7FA6T2AD3CFM#AA1?

The R7FA6T2AD3CFM#AA1's 24-bit Sigma-Delta A/D Converter (SDADC24) supports up to 7 differential analog input channels (ANIP0–ANIP6 / ANIN0–ANIN6), configurable in differential or single-ended mode. Each channel includes a programmable gain amplifier and digital filtering, enabling high-resolution metrology-grade measurements. This matches the "A" variant designation in the RA2A2 part numbering scheme, confirming full 7-channel capability for the R7FA6T2AD3CFM#AA1.

What LCD segment drive capability does the R7FA6T2AD3CFM#AA1 provide?

The R7FA6T2AD3CFM#AA1's Segment LCD Controller (SLCDC) supports 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. Waveform A/B selection and blinking control are supported. These capabilities are confirmed for the 64-pin LQFP package (FM suffix) in Table 1.12 and Figure 1.6 of the R01DS0418EJ0130 datasheet.

Is the R7FA6T2AD3CFM#AA1 pin-compatible with other RA2A2 family members?

The R7FA6T2AD3CFM#AA1 shares the 64-pin LQFP (FM) package footprint with other RA2A2 variants like R7FA2A2BD3CFM, but pin functions differ due to variant-specific peripheral enablement - notably the full 7-channel SDADC24 and extended SLCDC signal routing. While mechanical mounting is identical, electrical compatibility requires validation against the specific pin assignment table (Figure 1.6) and variant comparison (Table 1.13) in the R01DS0418EJ0130 datasheet. The R7FA6T2AD3CFM#AA1 is not a drop-in replacement for lower-channel variants without schematic review.