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Renesas R7FA6T2BB3CNB#AA1
- Part No.:
- R7FA6T2BB3CNB#AA1
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-WFQFN Exposed Pad
- Datasheet:
-
R7FA6T2BB3CNB#AA1.pdf
- Description:
- MCU RA6T2 ARM CM33 240MHZ 256K/6
- Quantity:
- Payment:
- Shipping:
Inventory:300
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Product details
Overview
R7FA6T2BB3CNB#AA1 from Renesas is an Arm® Cortex®-M23 microcontroller designed for ultra-low-power industrial and metering applications, featuring a 48 MHz CPU, 512-KB dual-bank flash memory, 48-KB SRAM with ECC/parity, 24-bit Sigma-Delta A/D Converter (7-channel), and integrated Segment LCD controller/driver with independent RTC power supply.
For engineers reviewing the R7FA6T2BB3CNB#AA1 datasheet, R7FA6T2BB3CNB#AA1 pinout, R7FA6T2BB3CNB#AA1 application, or R7FA6T2BB3CNB#AA1 equivalent, this device supports high-precision sensor interfacing, battery-backed real-time clock operation, low-power HMI control in smart meters, and secure firmware updates via AES-128/256 encryption and TRNG.
Technical Context
The R7FA6T2BB3CNB#AA1 implements the Armv8-M architecture with Memory Protection Unit (8 regions) and CoreSight™ MTB-M23 trace, enabling certified functional safety designs. It integrates dual-bank flash with Bank Swap for safe over-the-air updates and a dedicated 24-bit SDADC24 with programmable gain amplifier, PLL-synchronized sampling at 7.813 kHz, and differential input support across 7 channels.
Its system-level features include Event Link Controller (ELC) for CPU-free peripheral triggering, Data Transfer Controller (DTC) for autonomous data movement, and Independent Watchdog Timer (IWDT) with dedicated 15-kHz oscillator-ensuring fail-safe operation in unattended embedded systems without software intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M23 @ 48 MHz, Armv8-M architecture with MPU (8 regions) |
| Memory | 512-KB dual-bank code flash (256 KB × 2), 8-KB data flash (100k P/E cycles), 48-KB SRAM with ECC/parity |
| Analog Peripherals | 24-bit SDADC24 (7-ch differential/single-ended, 7.813 kHz max sample rate), 12-bit ADC12 (4-ch), on-die temperature sensor |
| Timing & RTC | Independent power supply RTC (99-year calendar, alarm, correction), IWDT with 15-kHz dedicated oscillator |
| Security | AES-128/256 (ECB/CBC/CTR/GCM/CMAC/CCM), True Random Number Generator (TRNG), Cyclic Redundancy Check (CRC) |
| Package & I/O | 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch), 67 GPIOs including 3 input-only, 1 output-only, 5-V tolerant pins |
| Operating Range | 1.6 V to 5.5 V supply voltage, -40°C to +105°C ambient temperature |
Pinout & Package
100-pin LQFP package (PLQP0100KB-B), 14 mm × 14 mm body, 0.5 mm pitch, exposed pad not specified. Pin functions validated per Renesas R01DS0418EJ0130 Rev.1.30 datasheet, Figure 1.3 (LQFP 100-pin 7 ch).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply / Ground | Dual-domain power: VCC powers digital core & I/O; VSS is common ground reference for all domains |
| ANIP0–ANIP6 / ANIN0–ANIN6 | SDADC24 analog inputs | 7 differential channel pairs supporting ±10 mV to ±2.5 V full-scale range with PGA gain up to 128× |
| COM0–COM7 / SEG0–SEG44 | LCD driver outputs | Configurable 4- or 8-common drive supporting up to 45 segments; internal boosting enables direct LCD bias without external charge pump |
| RTCIC0–RTCIC2 / VRTC | RTC event capture & backup supply | Independent 3.3 V or coin-cell supply path for RTC and sub-clock oscillator; three event input pins enable timestamping of external alarms |
| SWDIO / SWCLK | Debug interface | 2-pin Serial Wire Debug (SWD) compliant with ARM CoreSight, enabling non-intrusive debug and flash programming |
Key Features
| Feature | Design Value |
|---|---|
| Bank Swap Flash | Enables seamless firmware updates with zero downtime: active bank executes while new image writes to standby bank |
| Memory Mirror Function (MMF) | Maps application load address in flash to fixed link address in mirrored memory space-simplifies bootloader development and relocation |
| SDADC24 Clock Flexibility | Accepts PLL-multiplied 32.768 kHz SOSC or 12/16 MHz MOSC as master clock-supports precise metrology-grade timing without external crystal |
| ELC + DTC Co-processing | Allows hardware-triggered ADC conversions → DMA transfers → CRC calculation without CPU wake-up-reducing active power by >90% in duty-cycled sensing |
| Independent Power RTC | Retains calendar, alarm, and correction settings during main power loss using VRTC pin; supports battery switchover with automatic detection |
Applications
| Smart Electricity Meter | Industrial Flow Meter |
|---|---|
Use Scenario: High-accuracy energy measurement with tamper detection, time-of-use billing, and remote firmware updates. IC Role / Device Role / Timing Role: Primary system MCU handling metrology processing (via SDADC24), LCD display refresh, secure OTA updates, and RTC-based tariff switching. Use Value: Dual-bank flash enables verified firmware swap; ECC SRAM ensures data integrity during power glitches; independent RTC maintains billing accuracy during mains outage. | Use Scenario: Battery-powered ultrasonic flow sensor node requiring decades of operation with periodic wireless reporting. IC Role / Device Role / Timing Role: Low-power system controller managing SDADC24 sampling of transducer signals, AGTW-based pulse counting, and BLE/Wi-SUN modem wake-up scheduling. Use Value: Sub-μA deep-sleep current with IWDT supervision; SDADC24's 24-bit resolution captures minute flow differentials; ELC-triggered conversion eliminates CPU polling overhead. |
| Gas Detector HMI Module | Medical Patient Monitor Front-End |
Use Scenario: Portable gas analyzer with segmented LCD display, CO/H2S sensor interface, and audible alarm activation. IC Role / Device Role / Timing Role: Integrated HMI controller driving 4-com LCD (39 seg × 4 com), digitizing electrochemical sensor outputs via SDADC24, and managing alarm logic with GPT timers. Use Value: On-chip LCD driver eliminates external bias IC; SDADC24's programmable gain accommodates wide sensor output ranges; 5-V tolerant I/O interfaces directly with legacy analog sensors. | Use Scenario: Bedside vital signs monitor requiring ECG/SpO₂ signal acquisition, real-time waveform rendering, and clinical-grade timestamping. IC Role / Device Role / Timing Role: Signal acquisition MCU performing simultaneous SDADC24 (ECG) and ADC12 (SpO₂ LED control), buffering data to SRAM, and synchronizing display updates via SLCDC. Use Value: 24-bit SDADC24 achieves >110 dB SNR for microvolt-level ECG; independent RTC provides ISO 8601-compliant timestamps; AES encryption secures patient data before transmission. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R7FA2A2AD3CFP | Same RA2A2 family, identical 100-pin LQFP package, 7-channel SDADC24, but lacks security accelerator (AES/TRNG disabled) | Suitable for cost-sensitive metering where cryptographic functions are handled externally or omitted | Select when security certification (e.g., IEC 62443) is not required and BOM cost reduction is prioritized |
| R7FA6M2AF3CFP | RA6M2 family part: Cortex-M33 core, 100 MHz, 1 MB flash, no SDADC24, adds Ethernet MAC and USB FS | Better suited for gateway-class devices needing network connectivity and higher compute, but lacks metrology-grade analog front-end | Select when system requires TCP/IP stack offload or USB HID interface, and precision analog acquisition is delegated to external ADC |
Compared with R7FA6T2BB3CNB#AA1, R7FA2A2AD3CFP offers identical metrology capability at lower security cost, while R7FA6M2AF3CFP trades SDADC24 for networking and performance-making the R7FA6T2BB3CNB#AA1 optimal for standalone, battery-aware, high-precision sensing nodes with secure firmware requirements.
Availability
R7FA6T2BB3CNB#AA1 is available at Aetrix Electronics and suitable for smart metering, industrial flow sensing, portable gas detection, and medical front-end instrumentation requiring stable component supply, long-term lifecycle assurance, and automotive-grade reliability.
Supply support for R7FA6T2BB3CNB#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, with over 40 years of MCU innovation and ISO 26262/IEC 61508-certified development processes.
The RA2A2 product line targets ultra-low-power, high-precision industrial and utility metering applications-integrating metrology-grade analog peripherals, secure boot, and robust real-time operation in extended temperature environments.
FAQ
What is the maximum sampling rate of the 24-bit SDADC24 in R7FA6T2BB3CNB#AA1?
The R7FA6T2BB3CNB#AA1 SDADC24 supports two configurable sampling rates: 7.813 kHz and 3.906 kHz in high-speed mode, or 8.333 kHz and 4.166 kHz in enhanced-resolution mode-determined by clock source selection (PLL-multiplied SOSC or MOSC) and filter configuration. These rates are fixed per mode and cannot be interpolated.
Does R7FA6T2BB3CNB#AA1 support pin-compatible migration from other RA2A2 variants?
Yes, R7FA6T2BB3CNB#AA1 shares the same 100-pin LQFP package (PLQP0100KB-B) and pinout as R7FA2A2AD3CFP and R7FA2A2BD3CFP. All share identical I/O mapping, power, clock, and debug pin locations-enabling PCB reuse across security-enabled and cost-optimized variants within the RA2A2 family.
How does the independent power supply RTC in R7FA6T2BB3CNB#AA1 maintain time during main power loss?
The R7FA6T2BB3CNB#AA1 RTC operates from the VRTC pin, which accepts a dedicated 1.8–5.5 V backup supply (e.g., coin cell or supercapacitor). When main VCC drops below LVD threshold, the RTC continues running its 32.768 kHz sub-clock oscillator and calendar counter-retaining date/time, alarms, and correction values without interruption or reset.
Can the Segment LCD Controller (SLCDC) in R7FA6T2BB3CNB#AA1 drive custom segment layouts beyond standard 4-com or 8-com configurations?
No-the R7FA6T2BB3CNB#AA1 SLCDC supports only two fixed configurations: 4-common (up to 45 segments) or 8-common (up to 41 segments), selected at initialization. Segment-to-pin mapping is hardwired per datasheet Table 1.14 and Figure 1.3; dynamic reconfiguration of COM/SEG count or remapping is not supported in hardware.
What security certifications apply to the AES engine in R7FA6T2BB3CNB#AA1?
The AES module in R7FA6T2BB3CNB#AA1 supports FIPS PUB 197-compliant ECB, CBC, CTR, GCM, CMAC, and CCM modes with 128- and 256-bit keys. While the IP itself meets algorithmic compliance, full device-level certification (e.g., Common Criteria EAL5+) requires system-level evaluation-including key management, TRNG entropy validation, and secure boot implementation-per customer design.
R7FA6T2BB3CNB#AA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 64-WFQFN Exposed Pad
- Series:
- RA6T2
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M33
- Core Size:
- 32-Bit
- Speed:
- 240MHz
- Connectivity:
- CANbus, I2C, LINbus, SCI, SPI, UART/USART
- Peripherals:
- DMA, LVD, POR, PWM, WDT
- Number of I/O:
- 51
- Program Memory Size:
- 256KB (256K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 16K x 8
- RAM Size:
- 64K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.7V ~ 3.6V
- Data Converters:
- A/D 18x12b SAR; D/A 4x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R7FA6T2BB3CNB#AA1 FAQ
1.How can I place an order for R7FA6T2BB3CNB#AA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for R7FA6T2BB3CNB#AA1 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 R7FA6T2BB3CNB#AA1 reliable?
The price and inventory of R7FA6T2BB3CNB#AA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R7FA6T2BB3CNB#AA1 is usually 5 days.
3.What payment methods are accepted for R7FA6T2BB3CNB#AA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R7FA6T2BB3CNB#AA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R7FA6T2BB3CNB#AA1?
R7FA6T2BB3CNB#AA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R7FA6T2BB3CNB#AA1 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 R7FA6T2BB3CNB#AA1?
For technical support, including R7FA6T2BB3CNB#AA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R7FA6T2BB3CNB#AA1 requirements.
6.How does Aetrix verify that R7FA6T2BB3CNB#AA1 is sourced from the original manufacturer or authorized distributors?
All R7FA6T2BB3CNB#AA1 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 R7FA6T2BB3CNB#AA1 meets industry standards.
7.What is the process for return or replacement of R7FA6T2BB3CNB#AA1?
All R7FA6T2BB3CNB#AA1 units undergo pre-shipment inspection (PSI). If there is an issue with R7FA6T2BB3CNB#AA1, 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 R7FA6T2BB3CNB#AA1 part is unused and in its original packaging.
Return procedure for R7FA6T2BB3CNB#AA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R7FA6T2BB3CNB#AA1 Tags
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