Renesas R7FA2A2BD3CFM#AA1

Overview

R7FA2A2BD3CFM#AA1 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 hardware AES/ TRNG security. It targets battery-powered industrial HMI, portable medical sensors, and smart utility meters requiring high-precision analog sensing and secure real-time operation.

For engineers reviewing the R7FA2A2BD3CFM#AA1 datasheet, R7FA2A2BD3CFM#AA1 pinout, R7FA2A2BD3CFM#AA1 application, or R7FA2A2BD3CFM#AA1 equivalent, this page delivers verified technical context, package-specific pin mapping, functional alternatives, and supply-ready procurement details - all grounded in Renesas R01DS0418EJ0130 Rev.1.30 documentation.

Technical Context

The R7FA2A2BD3CFM#AA1 implements an Armv8-M architecture Cortex-M23 core with 8-region MPU, DWT/FPB debug, and SW-DP interface. It integrates dual-bank flash for safe firmware updates and memory mirror function to decouple link/load addresses.

Analog subsystem includes a 24-bit sigma-delta ADC with programmable gain amplifier supporting up to 4 differential inputs, plus a separate 12-bit SAR ADC with temperature sensor input. The SLCDC drives up to 21 segments × 4 commons or 17 segments × 8 commons using internal boosting or capacitor-split voltage generation.

Key Specifications

Pinout & Package

64-pin LQFP (PLQP0064KB-C), 10 mm × 10 mm, 0.5 mm pitch, with exposed pad. Pin functions validated per Renesas R01DS0418EJ0130 Figure 1.6 and Table 1.14.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA2A2AD3CFM#AA1, the R7FA2A2BD3CFM#AA1 trades SDADC24 channel count and segment drive capacity for identical package compatibility and security features; versus R7FA2E2AF3CFM#AA0, it adds critical analog and HMI peripherals at higher memory density - making it optimal for integrated sensor+display edge nodes.

Availability

R7FA2A2BD3CFM#AA1 is available at Aetrix Electronics and suitable for industrial HMI panels, portable medical sensors, smart utility meters, asset monitoring nodes, and secure IoT edge devices requiring stable component supply across extended product lifecycles.

Supply support for R7FA2A2BD3CFM#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 is designed for ultra-low-power, secure, and analog-rich applications - combining Arm Cortex-M23 performance with integrated SDADC24, SLCDC, and hardware cryptography for next-generation edge intelligence.

FAQ

What is the maximum operating frequency and core architecture of the R7FA2A2BD3CFM#AA1?

The R7FA2A2BD3CFM#AA1 operates at a maximum frequency of 48 MHz and uses the Arm Cortex-M23 core based on the Armv8-M architecture. It includes an 8-region Memory Protection Unit (MPU), SW-DP debug interface, and single-cycle integer multiplier. This architecture enables deterministic real-time performance with enhanced security features essential for certified industrial and medical applications. The R7FA2A2BD3CFM#AA1 maintains full compatibility with Arm Keil and GCC toolchains.

How many SDADC24 channels does the R7FA2A2BD3CFM#AA1 support, and what is its resolution?

The R7FA2A2BD3CFM#AA1 supports four differential input channels for its 24-bit Sigma-Delta A/D Converter (SDADC24). Each channel accepts paired positive/negative inputs (ANIP0–ANIP3 and ANIN0–ANIN3) with integrated programmable gain amplifier. The converter achieves up to 122 dB SNR and supports sampling rates of 3.906 kHz or 7.813 kHz depending on clock configuration. This capability is confirmed in Renesas R01DS0418EJ0130 Table 1.13 and Section 1.4.

Does the R7FA2A2BD3CFM#AA1 include hardware security features, and which ones are implemented?

Yes, the R7FA2A2BD3CFM#AA1 includes multiple hardware security features: AES-128/256 engine supporting ECB, CBC, CTR, GCM, CMAC, and CCM modes; True Random Number Generator (TRNG); Cyclic Redundancy Check (CRC) module; Data Operation Circuit (DOC); and register write protection. These are documented in Sections 1.10 and Table 1.13 of R01DS0418EJ0130. The R7FA2A2BD3CFM#AA1 also supports secure boot and flash area protection to prevent unauthorized firmware execution.

What LCD segment and common drive capability does the R7FA2A2BD3CFM#AA1 provide?

The R7FA2A2BD3CFM#AA1 integrates a Segment LCD Controller/Driver (SLCDC) supporting up to 21 segment outputs and 4 common outputs (21×4), or 17 segment outputs and 8 common outputs (17×8) - configurable via register settings. Voltage generation methods (internal boosting, capacitor split, external resistor division) and waveform selection (A or B) are software-controllable. This matches the 64-pin LQFP variant specification in Table 1.13 and Figure 1.6 of R01DS0418EJ0130.

What package type and pin count does the R7FA2A2BD3CFM#AA1 use?

The R7FA2A2BD3CFM#AA1 uses a 64-pin LQFP package (PLQP0064KB-C), measuring 10 mm × 10 mm with 0.5 mm pitch and an exposed pad. It provides 39 general-purpose I/O pins, including 3 input-only and 1 output-only pins, with 37 pull-up resistors and 32 N-ch open-drain outputs. This package variant is explicitly listed in Table 1.12 and Figure 1.6 of Renesas R01DS0418EJ0130 Rev.1.30.