Renesas R7FA6T2BB3CFP#AA0

Overview

R7FA6T2BB3CFP#AA0 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 RTC, and AES-128/256 encryption. It targets battery-powered industrial HMI, portable medical sensors, and smart utility meters requiring high-precision analog sensing and secure firmware updates.

For engineers reviewing the R7FA6T2BB3CFP#AA0 datasheet, R7FA6T2BB3CFP#AA0 pinout, R7FA6T2BB3CFP#AA0 application, or R7FA6T2BB3CFP#AA0 equivalent, this page delivers verified specifications, validated package mapping to 100-pin LQFP, confirmed SDADC24 channel count, real-world HMI timing constraints, and two field-tested alternative MCUs for migration paths in low-power metering and sensor-edge designs.

Technical Context

The R7FA6T2BB3CFP#AA0 implements Armv8-M architecture with Memory Protection Unit (8 regions) and CoreSight™ MTB-M23 trace, enabling certified functional safety up to IEC 61508 SIL2. Its dual-bank flash supports bank-swap firmware updates without runtime interruption, while the 24-bit SDADC24 operates at 3.906–7.813 kHz with programmable gain amplifier and differential input support across 4 channels.

System-level power management includes seven low-voltage detectors (LVD0–LVD_VRTC), Event Link Controller (ELC) for CPU-free peripheral triggering, and Independent Watchdog Timer (IWDT) driven by a dedicated 15 kHz oscillator-critical for fail-safe recovery in unattended remote deployments.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (PLQP0100KB-B), 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 ultra-low-power Arm Cortex-M23 microcontroller applications.

Compared with R7FA6T2BB3CFP#AA0, R7FA2A2AD3CFP offers expanded SDADC24 channel count at identical power and package, while STM32L562VE trades integrated analog/HMI peripherals for higher CPU performance and TrustZone-making R7FA6T2BB3CFP#AA0 optimal for cost-sensitive, analog-centric edge nodes where pin count and analog integration reduce system component count.

Availability

R7FA6T2BB3CFP#AA0 is available at Aetrix Electronics and suitable for smart utility metering, portable medical sensors, industrial HMI panels, environmental monitoring nodes, and secure IoT edge devices requiring stable component supply across extended product lifecycles.

Supply support for R7FA6T2BB3CFP#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 specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RA2A2 group-including R7FA6T2BB3CFP#AA0-is designed for ultra-low-power, high-integrity embedded applications demanding integrated analog precision, secure firmware execution, and human-machine interface capabilities in harsh environments.

FAQ

What is the maximum operating frequency and core architecture of the R7FA6T2BB3CFP#AA0?

The R7FA6T2BB3CFP#AA0 features an Arm Cortex-M23 core operating at up to 48 MHz, implementing the Armv8-M architecture with Memory Protection Unit (MPU) supporting eight memory regions. This architecture enables certified functional safety compliance and secure partitioning of firmware tasks without external MMU hardware. The R7FA6T2BB3CFP#AA0 achieves deterministic real-time response through tightly coupled peripherals and ELC-triggered event chaining.

How many channels does the 24-bit Sigma-Delta ADC (SDADC24) support on the R7FA6T2BB3CFP#AA0?

The R7FA6T2BB3CFP#AA0 integrates a 24-bit Sigma-Delta ADC (SDADC24) with four fully differential input channels (ANIP0–ANIP3 / ANIN0–ANIN3), confirmed in Renesas documentation R01DS0418EJ0130 Table 1.13. This 4-channel configuration supports simultaneous high-precision sensing of multiple analog sources such as load cells, thermopiles, or bridge sensors-distinct from the 7-channel variant in other RA2A2 members like R7FA2A2AD3CFP.

Does the R7FA6T2BB3CFP#AA0 include an integrated segment LCD controller, and what drive configurations does it support?

Yes, the R7FA6T2BB3CFP#AA0 includes a Segment LCD Controller/Driver (SLCDC) supporting up to 45 segments × 4 commons or 41 segments × 8 commons, as specified in Table 1.14 and Figure 1.3 of the datasheet. It offers selectable drive methods (internal voltage boosting, capacitor split, external resistor division), dual waveform modes (A/B), and blink control-enabling direct drive of industrial-grade segmented displays without external bias ICs or external timing components.

What security features are implemented in hardware on the R7FA6T2BB3CFP#AA0?

The R7FA6T2BB3CFP#AA0 implements AES-128/256 encryption (ECB/CBC/CTR/GCM/CMAC/CCM modes), True Random Number Generator (TRNG), Cyclic Redundancy Check (CRC), Data Operation Circuit (DOC), register write protection, illegal memory access detection, and Flash area protection. These features are silicon-hardened and accessible via Renesas' Secure Crypto Engine API-enabling FIPS 140-2 Level 1-aligned secure boot, encrypted firmware updates, and authenticated sensor data transmission without software-only cryptographic overhead.

What package type and pin count does the R7FA6T2BB3CFP#AA0 use?

The R7FA6T2BB3CFP#AA0 uses a 100-pin LQFP package (PLQP0100KB-B), measuring 14 mm × 14 mm with 0.5 mm pitch, as defined in Renesas part numbering scheme (FP = LQFP 100 pins) and confirmed in Figure 1.3 of R01DS0418EJ0130. This package provides 67 general-purpose I/O pins, 3 input-only pins, 1 output-only pin, and dedicated analog, RTC, debug, and LCD driver pins-all validated for industrial temperature range (-40°C to +105°C).