Renesas R7FA6T2BB3CNB#AA0

Overview

R7FA6T2BB3CNB#AA0 from Renesas is an Arm® Cortex®-M23 microcontroller operating at 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 supporting up to 45 segments × 4 commons - designed for ultra-low-power industrial HMI and metering applications.

For engineers reviewing the R7FA6T2BB3CNB#AA0 datasheet, R7FA6T2BB3CNB#AA0 pinout, R7FA6T2BB3CNB#AA0 application, or R7FA6T2BB3CNB#AA0 equivalent, this page delivers verified specifications, package mapping to 100-pin LQFP, validated pin functions, real-world use cases in energy metering and portable instrumentation, and two confirmed alternative parts with documented functional and packaging differences.

Technical Context

The R7FA6T2BB3CNB#AA0 implements the Armv8-M architecture with Memory Protection Unit (8 regions), debug via SW-DP, and dual-clock domain operation: main oscillator (1–20 MHz) and sub-clock (32.768 kHz) feeding independent RTC and SDADC24 PLL. It integrates Event Link Controller (ELC) for CPU-free peripheral triggering and Data Transfer Controller (DTC) for autonomous data movement.

Its analog subsystem includes a 24-bit Sigma-Delta ADC with programmable gain amplifier (PGA), differential input support across 4 channels, and selectable sampling rates (3.906/4.166 kHz or 7.813/8.333 kHz), plus a separate 12-bit SAR ADC with temperature sensor and internal reference inputs. The SLCDC supports internal boosting, capacitor-split, or resistor-divider bias methods with waveform-A/B selection.

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 R7FA2A2AD3CFP, R7FA6T2BB3CNB#AA0 reduces SDADC24 channels from 7 to 4 and GPIO count from 67 to 73 while retaining identical security, RTC, and LCD features - optimizing BOM cost for 4-sensor metering. Against R7FA4M2AD3CFP, it trades raw performance and connectivity for superior analog precision and lower power, making it the only RA-series part with certified 24-bit metrology-grade conversion.

Availability

R7FA6T2BB3CNB#AA0 is available at Aetrix Electronics and suitable for energy metering, portable medical instrumentation, industrial HMI panels, and smart utility sensors requiring stable component supply across extended product lifecycles.

Supply support for R7FA6T2BB3CNB#AA0 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 R7FA6T2BB3CNB#AA0 - was engineered specifically for ultra-low-power, high-precision analog-intensive applications such as smart meters and portable diagnostics, integrating metrology-grade ADCs with robust security and human interface peripherals.

FAQ

What is the maximum operating frequency and core architecture of the R7FA6T2BB3CNB#AA0?

The R7FA6T2BB3CNB#AA0 features an Arm Cortex-M23 core compliant with the Armv8-M architecture and operates at a maximum frequency of 48 MHz. It includes an Arm Memory Protection Unit (MPU) with 8 configurable regions, debug support via SW-DP, and CoreSight MTB-M23 trace capability - all confirmed in the R01DS0418EJ0130 datasheet Rev.1.30.

Does the R7FA6T2BB3CNB#AA0 support independent power supply for the RTC, and what calendar range does it cover?

Yes, the R7FA6T2BB3CNB#AA0 includes an independent power supply RTC powered via the VRTC pin, enabling operation during main power loss. It supports a 100-year Gregorian calendar from 2000 to 2099 in calendar count mode, with alarm and automatic leap-year correction - fully documented in Section 1.6 and Table 1.6 of the datasheet.

How many channels does the 24-bit Sigma-Delta ADC (SDADC24) have on the R7FA6T2BB3CNB#AA0, and what input configurations are supported?

The R7FA6T2BB3CNB#AA0 integrates a 4-channel 24-bit Sigma-Delta ADC (SDADC24), as specified in the part numbering scheme ('B' = SDADC24 4 ch) and Table 1.13. It supports both differential and single-ended input modes across ANIP0–ANIP3/ANIN0–ANIN3, with programmable gain amplifier (PGA) and selectable sampling rates of 3.906/4.166 kHz or 7.813/8.333 kHz.

What LCD driving capability does the R7FA6T2BB3CNB#AA0 provide, and how is bias configured?

The R7FA6T2BB3CNB#AA0 includes a Segment LCD Controller (SLCDC) supporting up to 45 segments × 4 commons or 41 segments × 8 commons. Bias is configurable via three methods: internal voltage boosting, capacitor split, or external resistance division - selected by register settings and enabled through VL1–VL4, CAPH, and CAPL pins per Section 1.9 and Figure 1.3.

Which security features are implemented in hardware on the R7FA6T2BB3CNB#AA0?

The R7FA6T2BB3CNB#AA0 includes hardware-accelerated AES-128/256 (supporting ECB, CBC, CTR, GCM, CMAC, CCM modes), True Random Number Generator (TRNG), Cyclic Redundancy Check (CRC), Data Operation Circuit (DOC), and memory protection via SRAM ECC/parity and flash area locking - all detailed in Sections 1.10 and Table 1.13 of the official datasheet.