Renesas R7FA6T2AB3CNE#BA1

Overview

R7FA6T2AB3CNE#BA1 from Renesas is an ultra-low-power 48 MHz Arm® Cortex®-M23 microcontroller with 512-KB dual-bank flash, 48-KB SRAM, 24-bit Sigma-Delta ADC (4-channel), 12-bit ADC, segment LCD controller, independent power supply RTC, and AES-128/256 encryption. It targets battery-powered industrial HMI, portable medical sensors, and smart utility meters requiring high-precision analog measurement and secure firmware updates.

For engineers reviewing the R7FA6T2AB3CNE#BA1 datasheet, R7FA6T2AB3CNE#BA1 pinout, R7FA6T2AB3CNE#BA1 application, or R7FA6T2AB3CNE#BA1 equivalent, this MCU delivers verified low-power operation down to 1.6 V, integrated sigma-delta conversion for 24-bit resolution at 3.9–7.8 kHz sampling, and hardware-accelerated cryptographic functions without external co-processors.

Technical Context

The R7FA6T2AB3CNE#BA1 implements 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 zero-downtime firmware updates, while the 24-bit SDADC24 uses PLL-multiplied clock from 32.768 kHz SOSC for stable high-resolution measurement independent of main system clock.

Security is enforced via on-chip AES engine (ECB/CBC/CTR/GCM/CMAC/CCM modes), TRNG, ECC-protected SRAM, and register write protection. Power management includes seven low-voltage detectors (LVD0–LVD_VRTC), multiple clock sources (HOCO/MOCO/LOCO/SOSC/MOSC), and Event Link Controller (ELC) for autonomous peripheral triggering without CPU wake-up.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (PLQP0100KB-B), 14 mm × 14 mm, 0.5 mm pitch, RoHS-compliant Pb-free terminal material.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA2A2AD3CFP and R7FA4M2AD3CFP, the R7FA6T2AB3CNE#BA1 uniquely balances 24-bit sigma-delta precision, hardware security, and ultra-low active/sleep current in a 100-pin LQFP-making it optimal for battery-operated measurement devices where analog accuracy and firmware integrity are non-negotiable.

Availability

R7FA6T2AB3CNE#BA1 is available at Aetrix Electronics and suitable for industrial HMI panels, portable medical sensors, and smart utility meters requiring stable component supply across extended product lifecycles.

Supply support for R7FA6T2AB3CNE#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 Corporation is a global leader in microcontrollers, analog, and power management ICs, serving automotive, industrial, and IoT markets with scalable, secure, and energy-efficient solutions.

The RA2A2 product line delivers ultra-low-power Arm Cortex-M23 MCUs with integrated high-precision analog, LCD control, and hardware security-designed specifically for cost-sensitive, battery-operated industrial and medical edge devices.

FAQ

What is the maximum operating frequency and core architecture of the R7FA6T2AB3CNE#BA1?

The R7FA6T2AB3CNE#BA1 features an Arm Cortex-M23 core operating at up to 48 MHz, implementing the Armv8-M architecture with TrustZone-ready execution and an 8-region Memory Protection Unit (MPU). This architecture enables certified functional safety compliance and secure firmware partitioning-key for industrial and medical deployments where runtime integrity is critical. The R7FA6T2AB3CNE#BA1 maintains deterministic timing even under voltage scaling from 1.6 V to 5.5 V.

Does the R7FA6T2AB3CNE#BA1 support hardware-accelerated cryptography, and which algorithms are implemented?

Yes, the R7FA6T2AB3CNE#BA1 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 NIST SP 800-90B-compliant True Random Number Generator (TRNG) for key derivation and nonce generation. These hardware blocks operate independently of the CPU-enabling secure boot, encrypted firmware updates, and TLS offload without compromising real-time performance in the R7FA6T2AB3CNE#BA1.

How many analog input channels does the 24-bit Sigma-Delta ADC (SDADC24) support on the R7FA6T2AB3CNE#BA1?

The R7FA6T2AB3CNE#BA1's SDADC24 supports four differential analog input channels (ANIP0/ANIN0 through ANIP3/ANIN3), confirmed in the RA2A2 datasheet revision 1.30. This 4-channel configuration is fixed for the "B" variant (e.g., R7FA6T2AB3CNE#BA1), distinguishing it from the 7-channel "A" variant. Each channel includes a programmable gain amplifier and supports sampling rates of 3.906 kHz or 7.813 kHz with configurable digital filtering.

What package type and pin count does the R7FA6T2AB3CNE#BA1 use, and is it RoHS-compliant?

The R7FA6T2AB3CNE#BA1 is supplied in a 100-pin LQFP package (PLQP0100KB-B), measuring 14 mm × 14 mm with 0.5 mm pitch. It is RoHS-compliant with Pb-free terminal material, as specified in Renesas' part numbering scheme (suffix "#BA1"). This package provides 67 general-purpose I/O pins, 3 input-only pins, and 1 output-only pin-optimized for high-density industrial HMI and sensor interface layouts.

Can the R7FA6T2AB3CNE#BA1 operate with an independent power supply for the RTC, and what pins are involved?

Yes, the R7FA6T2AB3CNE#BA1 supports independent power supply for the RTC via the VRTC pin, enabling continuous calendar and alarm operation during main power loss. The RTCIC0–RTCIC2 pins provide external event capture inputs for time-stamping, and the RTCOUT pin outputs 1-Hz or 64-Hz clock signals. This architecture allows >10-year battery-backed operation in utility metering and asset tracking applications using the R7FA6T2AB3CNE#BA1.