Renesas R7FA6T2BB3CNE#BA1

Overview

R7FA6T2BB3CNE#BA1 from Renesas is an Arm® Cortex®-M23 microcontroller designed for ultra-low-power, high-precision sensing and human-machine interface applications. It operates at up to 48 MHz, integrates 512-KB dual-bank flash, 48-KB SRAM with ECC, a 24-bit Sigma-Delta ADC (7-channel differential), and a segment LCD controller supporting up to 45 segments × 4 commons - enabling battery-powered medical monitors and industrial panel meters.

For engineers reviewing the R7FA6T2BB3CNE#BA1 datasheet, R7FA6T2BB3CNE#BA1 pinout, R7FA6T2BB3CNE#BA1 application, or R7FA6T2BB3CNE#BA1 equivalent, key selection criteria include its independent power supply RTC, SDADC24 clocking via PLL from 32.768 kHz SOSC, 5-V-tolerant I/O (3 pins), and security features including AES-128/256 and TRNG - all validated for -40°C to +105°C operation in 100-pin LQFP.

Technical Context

This MCU implements the Armv8-M architecture with an 8-region Memory Protection Unit (MPU), debug support via SW-DP, and dual-bank flash enabling safe firmware updates. Its SDADC24 uses programmable gain amplification and supports sampling rates of 7.813/8.333 kHz (high-speed mode) or 3.906/4.166 kHz (low-noise mode), with clock derived either from MOSC (12/16 MHz) or PLL-multiplied SOSC (32.768 kHz).

The system includes two asynchronous timer families: eight 16-bit AGT timers and two 32-bit AGTW timers, both operable in low-power modes independent of main clock domains. The SLCDC supports internal voltage boosting, capacitor-split, or external resistor-divider drive methods, with selectable waveform A/B and blink control - directly configurable for segmented displays without external drivers.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch), RoHS-compliant, tray-packed (#BA1). Pin count and I/O configuration match R7FA2A2AD3CFP superset: 67 general-purpose I/O, 3 input-only, 1 output-only, 5-V tolerant on RTCIC0–RTCIC2 pins.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA2A2AD3CFP and R7FA6M2AF3CFP, the R7FA6T2BB3CNE#BA1 uniquely balances ultra-low-power precision analog (24-bit SDADC24), integrated LCD driving, and certified security (AES/TRNG) in a single 100-pin package - eliminating external components for compact, certified medical and utility designs.

Availability

R7FA6T2BB3CNE#BA1 is available at Aetrix Electronics and suitable for medical monitoring devices, industrial panel meters, smart utility meters, and portable test equipment requiring stable component supply across extended product lifecycles.

Supply support for R7FA6T2BB3CNE#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 is a global semiconductor leader delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT markets, with deep expertise in microcontrollers, analog, and power technologies.

The RA2A2 group - including R7FA6T2BB3CNE#BA1 - was engineered specifically for ultra-low-power, high-precision analog sensing and human-machine interface applications in harsh environments, emphasizing security, reliability, and display integration.

FAQ

What is the maximum operating frequency and core architecture of the R7FA6T2BB3CNE#BA1?

The R7FA6T2BB3CNE#BA1 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 debug support via Serial Wire Debug (SW-DP). This architecture delivers deterministic real-time performance with enhanced security foundations for certified applications.

Does the R7FA6T2BB3CNE#BA1 support hardware-accelerated cryptography?

Yes, the R7FA6T2BB3CNE#BA1 integrates a dedicated AES engine supporting ECB, CBC, CTR, GCM, CMAC, and CCM modes with 128- and 256-bit keys, alongside a True Random Number Generator (TRNG). These peripherals operate independently of the CPU and support DMA-linked data transfers - enabling secure boot, encrypted firmware updates, and TLS offload in resource-constrained endpoints.

How many channels does the 24-bit Sigma-Delta ADC (SDADC24) support on the R7FA6T2BB3CNE#BA1?

The R7FA6T2BB3CNE#BA1 supports 7 differential or single-ended input channels on its 24-bit Sigma-Delta ADC (SDADC24), as confirmed by the RA2A2 datasheet (R01DS0418EJ0130) and part numbering scheme ('A' variant = 7 ch). This matches the 'A' feature set in the RA2A2 family and enables high-resolution sensor interfacing without external signal conditioning.

What LCD configurations does the Segment LCD Controller (SLCDC) support on the R7FA6T2BB3CNE#BA1?

The SLCDC in the R7FA6T2BB3CNE#BA1 supports up to 45 segment outputs and 4 common outputs (or 41 segments × 8 commons) with selectable drive waveforms (A or B), blink control, and three bias methods: internal voltage boosting, capacitor split, and external resistor division. These settings are software-configurable and require no external components for standard LCD modules.

Is the R7FA6T2BB3CNE#BA1 qualified for industrial temperature range operation?

Yes, the R7FA6T2BB3CNE#BA1 is rated for operation from -40°C to +105°C ambient temperature, as specified in the RA2A2 datasheet. It includes multiple low-voltage detection (LVD) circuits for VCC, VRTC, and EXLVDVBAT pins - each with configurable thresholds - ensuring robust behavior across thermal and supply-voltage extremes in industrial and medical environments.