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Renesas R7FA2A2BD3CFN#BA1
- Part No.:
- R7FA2A2BD3CFN#BA1
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- -
- Datasheet:
-
R7FA2A2BD3CFN#BA1.pdf
- Description:
- MCU RA2A2 ARM CM23 48MHZ 512K/48
- Quantity:
- Payment:
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Inventory:1,051
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Product details
Overview
R7FA2A2BD3CFN#BA1 from Renesas is an Arm® Cortex®-M23 microcontroller operating at 48 MHz, featuring 512-KB dual-bank flash, 48-KB SRAM with ECC/parity split, 4-channel 24-bit Sigma-Delta ADC (SDADC24), and integrated segment LCD controller for 35-segment × 8-common displays. It supports independent power supply RTC, AES-128/256 encryption, and operates from 1.6 V to 5.5 V across –40°C to +105°C in industrial metering and low-power HMI applications.
For engineers reviewing the R7FA2A2BD3CFN#BA1 datasheet, R7FA2A2BD3CFN#BA1 pinout, R7FA2A2BD3CFN#BA1 application, or R7FA2A2BD3CFN#BA1 equivalent, key selection criteria include SDADC24 channel count (4 ch), LQFP-80 package footprint, RTCIC input support on three pins, and compatibility with Renesas' RA2A2 software ecosystem and FSP v4.x.
Technical Context
The R7FA2A2BD3CFN#BA1 implements Armv8-M architecture with Memory Protection Unit (8 regions) and CoreSight™ MTB-M23 trace. Its dual-bank flash enables safe firmware updates via Bank Swap, while the SDADC24 uses PLL-multiplied 32.768 kHz clock for high-precision measurement at 3.906/4.166 kHz sampling rates.
Power management includes five low-power modes, independent LVD monitoring on VCC, EXLVDVBAT, VRTC, and EXLVD pins, and dedicated IWDTLOCO oscillator for fail-safe reset. The Event Link Controller (ELC) enables direct peripheral-to-peripheral triggering without CPU intervention-critical for deterministic sensor acquisition and display refresh timing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M23 @ 48 MHz; supports TrustZone for secure boot and peripheral isolation. |
| Memory | 512-KB code flash (2×256 KB banks), 8-KB data flash (100k P/E cycles), 48-KB SRAM (32 KB parity + 16 KB ECC). |
| Analog Peripherals | 4-channel 24-bit Sigma-Delta ADC (SDADC24); 4-channel 12-bit SAR ADC (ADC12); on-die temperature sensor. |
| Timing & RTC | Independent power supply RTC with calendar mode (2000–2099), alarm, correction, and 1/64 Hz output; IWDT with dedicated 15 kHz oscillator. |
| Human Interface | Segment LCD controller supporting 35 seg × 8 com or 41 seg × 8 com; internal boost/cap-split/resistor-divider drive methods. |
| Security | AES-128/256 (ECB/CBC/CTR/GCM/CMAC/CCM), TRNG, CAC, CRC, DOC, register write protection, illegal access detection. |
| I/O & Packaging | 55 general-purpose I/O pins (3 input-only, 1 output-only), 5-V tolerant on 2 pins, N-ch open-drain on 46 pins; 80-pin LQFP (12 mm × 12 mm, 0.5 mm pitch). |
Pinout & Package
Package: 80-pin LQFP (PLQP0080KB-B), 12 mm × 12 mm, 0.5 mm pitch, RoHS-compliant, Pb-free terminal finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply / Ground | Dual VCC/VSS pairs decoupled with 0.1-µF capacitors; AVCC/AVSS isolated for analog noise immunity. |
| XCIN / XCOUT | Sub-clock oscillator interface | Connects 32.768 kHz crystal for RTC and SDADC24 clock source; supports external clock input. |
| ANIP0–ANIP3 / ANIN0–ANIN3 | SDADC24 differential inputs | Four fully differential 24-bit sigma-delta channels; PGA gain programmable per channel for sensor signal conditioning. |
| COM0–COM7 / SEG0–SEG44 | LCD segment/common drivers | Configurable for 35-seg × 8-com (default) or 41-seg × 8-com; VL1–VL4 and CAPH/CAPL support multiple bias methods. |
| RTCIC0–RTCIC2 | RTC time capture inputs | Three dedicated event capture pins for external time-stamping (e.g., pulse metering, tamper detection) with independent power domain. |
| SWDIO / SWCLK | Debug interface | 2-pin Serial Wire Debug (SWD) compliant with ARM CoreSight; supports flash programming and real-time trace via MTB-M23. |
Key Features
| Feature | Design Value |
|---|---|
| Bank Swap Flash | Enables seamless firmware updates without system interruption-critical for field-deployed utility meters and medical devices. |
| SDADC24 with PLL Clock | Uses 32.768 kHz SOSC multiplied by PLL to achieve stable 3.906/4.166 kHz sampling-eliminates need for external precision clock source. |
| Independent Power Supply RTC | Retains calendar, alarm, and correction functions during main power loss using VRTC backup; supports battery-backed operation up to 10 years. |
| ELC + DTC Co-Operation | Allows SDADC24 conversion completion to trigger LCD segment update via DTC-reduces CPU load and ensures deterministic display latency. |
| Security Peripherals Integration | AES engine and TRNG share bus with MACL and CRC modules-enables authenticated firmware signature verification and encrypted sensor log storage in one atomic flow. |
Applications
| Smart Utility Metering | Industrial Panel Meters |
|---|---|
Use Scenario: Electricity/water/gas meter with tamper detection, time-of-use billing, and local LCD display. IC Role / Device Role / Timing Role: Main system controller handling metrology (SDADC24), RTC-based tariff switching, and segment LCD driver. Use Value: 4-channel SDADC24 provides simultaneous voltage/current/temperature sensing; RTCIC pins detect physical tampering events with sub-second timestamp accuracy. | Use Scenario: DIN-rail mounted panel meter for motor current, voltage, and power factor monitoring in factory automation. IC Role / Device Role / Timing Role: Real-time data acquisition node with isolated analog front-end, local display, and serial communication to PLC. Use Value: Dual-bank flash allows over-the-air firmware updates without interrupting measurement; ELC links SDADC24 end-of-conversion to DTC-driven UART transmit buffer fill. |
| Portable Medical Devices | Low-Power Building Sensors |
Use Scenario: Battery-powered blood glucose monitor or portable ECG device with graphical LCD and data logging. IC Role / Device Role / Timing Role: System-on-chip managing biosensor analog acquisition, LCD UI, secure data storage, and BLE interface control. Use Value: 1.6–5.5 V operating range extends battery life; AES encryption protects patient health data stored in data flash; low-power AGT timers manage sensor polling intervals. | Use Scenario: Wireless occupancy or environmental sensor node (temperature/humidity/CO₂) with local LCD status display. IC Role / Device Role / Timing Role: Edge intelligence hub performing local threshold detection, display update, and wake-up control for RF subsystem. Use Value: Independent RTC and LVD_VRTC enable ultra-low-power sleep (0.3 µA typical); SLCDC drives 35-seg × 8-com display without external driver IC-reducing BOM cost and board area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R7FA2A2AD3CFN#BA1 | 7-channel SDADC24; same 80-pin LQFP package; identical core, memory, and peripherals except SDADC24 channel count. | Required for multi-sensor systems needing >4 differential inputs (e.g., 3-phase energy metering with neutral current). | Select when higher-resolution analog acquisition across ≥7 channels is mandatory; otherwise R7FA2A2BD3CFN#BA1 reduces cost and layout complexity. |
| R7FA2E1A93CFM#AA0 | RA2E1 series; Cortex-M23 @ 48 MHz; 128-KB flash, 16-KB SRAM; no SDADC24; only 12-bit ADC12 (2 ch); 64-pin LQFP. | Suitable for cost-sensitive, non-metrology HMI applications where 24-bit precision is unnecessary. | Choose for simpler UI-only designs without precision analog sensing; lower memory and no SDADC24 reduce bill-of-materials and certification effort. |
Compared with R7FA2A2AD3CFN#BA1, the R7FA2A2BD3CFN#BA1 reduces SDADC24 channel count from 7 to 4-lowering test complexity and enabling tighter calibration tolerance-while retaining full RTC, LCD, security, and low-power features. Against R7FA2E1A93CFM#AA0, it delivers 4× more flash, 3× more SRAM, and critical 24-bit metrology capability at minimal footprint increase.
Availability
R7FA2A2BD3CFN#BA1 is available at Aetrix Electronics and suitable for smart metering, industrial HMI, portable medical instrumentation, and battery-powered environmental sensing requiring stable component supply and long-term industrial lifecycle support.
Supply support for R7FA2A2BD3CFN#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 semiconductor leader delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT markets.
The RA2A2 group targets ultra-low-power, high-integrity applications demanding precision analog sensing, secure firmware execution, and human interface integration-especially in utility metering, industrial control panels, and portable medical devices.
FAQ
What is the maximum operating frequency of the R7FA2A2BD3CFN#BA1?
The R7FA2A2BD3CFN#BA1 operates at a maximum frequency of 48 MHz using the Arm Cortex-M23 core. This speed is achieved with the high-speed on-chip oscillator (HOCO) at 48 MHz or via PLL multiplication from the main or sub-clock oscillators. All peripherals-including SDADC24, GPT, and SLCDC-are fully functional at this clock rate, and timing specifications in the R01DS0418EJ0130 datasheet are validated up to 48 MHz across the full temperature range (–40°C to +105°C).
Does the R7FA2A2BD3CFN#BA1 support Bank Swap for firmware updates?
Yes, the R7FA2A2BD3CFN#BA1 supports Bank Swap functionality using its dual-bank 512-KB flash memory (256 KB × 2 banks). This enables safe, atomic firmware updates where the active bank executes while the inactive bank is reprogrammed-preventing system failure during field upgrades. The feature is managed through the Flash Control Module (FCM) and requires configuration via the Firmware Integration Guide (R01UH0886EJ0100) and FSP v4.x APIs.
How many SDADC24 channels does the R7FA2A2BD3CFN#BA1 provide?
The R7FA2A2BD3CFN#BA1 provides four (4) differential input channels for the 24-bit Sigma-Delta A/D Converter (SDADC24), as confirmed in Table 1.13 of the R01DS0418EJ0130 datasheet. Each channel accepts differential inputs (ANIPn/ANINn) and supports programmable gain amplifier settings. This distinguishes it from the 7-channel variant R7FA2A2AD3CFN#BA1 and is sufficient for single-phase energy metering or multi-parameter sensor fusion in portable devices.
What LCD configurations are supported by the R7FA2A2BD3CFN#BA1's SLCDC?
The R7FA2A2BD3CFN#BA1's Segment LCD Controller (SLCDC) supports two primary configurations: 35 segment × 8 common (35 seg × 8 com) and 41 segment × 8 common (41 seg × 8 com), as specified in Table 1.13. These modes are selected via register configuration and correspond to the 80-pin LQFP package's available COM0–COM7 and SEG0–SEG44 pins. Drive methods-including internal voltage boosting, capacitor split, and external resistor division-are software-selectable to match display glass requirements.
Is the R7FA2A2BD3CFN#BA1 pin-compatible with other RA2A2 family members in the 80-pin LQFP package?
Yes, the R7FA2A2BD3CFN#BA1 is pin-compatible with other RA2A2 80-pin LQFP variants including R7FA2A2AD3CFN#BA1. Both share identical pin assignments, electrical characteristics, and package dimensions (PLQP0080KB-B). Differences are limited to internal configuration-such as SDADC24 channel count-and do not affect PCB layout, power delivery, or debug interface routing. This enables hardware reuse across product tiers with firmware-level differentiation.
R7FA2A2BD3CFN#BA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- -
- Series:
- -
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- -
- Core Processor:
- -
- Core Size:
- -
- Speed:
- -
- Connectivity:
- -
- Peripherals:
- -
- Number of I/O:
- -
- Program Memory Size:
- -
- Program Memory Type:
- -
- EEPROM Size:
- -
- RAM Size:
- -
- Voltage - Supply (Vcc/Vdd):
- -
- Data Converters:
- -
- Oscillator Type:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
R7FA2A2BD3CFN#BA1 FAQ
1.How can I place an order for R7FA2A2BD3CFN#BA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for R7FA2A2BD3CFN#BA1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for R7FA2A2BD3CFN#BA1 reliable?
The price and inventory of R7FA2A2BD3CFN#BA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R7FA2A2BD3CFN#BA1 is usually 5 days.
3.What payment methods are accepted for R7FA2A2BD3CFN#BA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R7FA2A2BD3CFN#BA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R7FA2A2BD3CFN#BA1?
R7FA2A2BD3CFN#BA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R7FA2A2BD3CFN#BA1 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for R7FA2A2BD3CFN#BA1?
For technical support, including R7FA2A2BD3CFN#BA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R7FA2A2BD3CFN#BA1 requirements.
6.How does Aetrix verify that R7FA2A2BD3CFN#BA1 is sourced from the original manufacturer or authorized distributors?
All R7FA2A2BD3CFN#BA1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that R7FA2A2BD3CFN#BA1 meets industry standards.
7.What is the process for return or replacement of R7FA2A2BD3CFN#BA1?
All R7FA2A2BD3CFN#BA1 units undergo pre-shipment inspection (PSI). If there is an issue with R7FA2A2BD3CFN#BA1, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The R7FA2A2BD3CFN#BA1 part is unused and in its original packaging.
Return procedure for R7FA2A2BD3CFN#BA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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