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Renesas R7FA2A1AB3CNF#AA0
- Part No.:
- R7FA2A1AB3CNF#AA0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 40-WFQFN Exposed Pad
- Datasheet:
-
R7FA2A1AB3CNF#AA0.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 40HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:349
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Product details
Overview
R7FA2A1AB3CNF#AA0 from Renesas Electronics is an Arm Cortex-M23-based 32-bit microcontroller designed for low-power, cost-sensitive industrial and human-machine interface applications. It operates at up to 48 MHz, integrates 256-KB code flash, 32-KB SRAM, dual ADCs (16-bit and 24-bit sigma-delta), DACs (12-bit and dual 8-bit), three operational amplifiers, and a Capacitive Touch Sensing Unit (CTSU) - enabling standalone touch-button control in battery-powered devices.
For engineers reviewing the R7FA2A1AB3CNF#AA0 datasheet, R7FA2A1AB3CNF#AA0 pinout, R7FA2A1AB3CNF#AA0 application, or R7FA2A1AB3CNF#AA0 equivalent, key selection considerations include its 40-pin QFN package with 22 I/O pins (3 input-only, 3 5-V tolerant), USB 2.0 Full-Speed with Battery Charging 1.2 support, CAN 2.0B compliance, and integrated safety features including ECC-protected SRAM, CAC clock monitoring, and independent watchdog timer (IWDT).
Technical Context
The R7FA2A1AB3CNF#AA0 implements the Armv8-M architecture with TrustZone-enabled security, supporting secure boot and AES-128/256 encryption. Its memory subsystem includes 256-KB code flash with 8-KB data flash (100,000 P/E cycles), 32-KB SRAM split into 16-KB parity and 16-KB ECC regions, and Memory Mirror Function (MMF) for flexible firmware load/link address decoupling.
Peripherals are orchestrated via Event Link Controller (ELC) for CPU-free inter-module triggering and Data Transfer Controller (DTC) for autonomous data movement. Analog subsystem integration includes SDADC24 with programmable gain instrumentation amplifier (PGA), ADC16 with differential/single-ended inputs, and OPAMPs with configurable switches - all calibrated for high-accuracy sensor signal conditioning without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M23, 48 MHz max - enables real-time deterministic execution with TrustZone isolation for secure firmware partitioning. |
| Memory | 256-KB code flash + 8-KB data flash + 32-KB SRAM (16-KB ECC + 16-KB parity) - supports robust firmware updates and runtime data logging with error correction. |
| Analog Converters | 16-bit ADC16 (1.2 Msps, 8 ch), 24-bit SDADC24 (15.6 ksps, 4 ch), DAC12 + dual DAC8 - delivers high-resolution sensor acquisition and analog output generation in compact systems. |
| Connectivity | USB 2.0 FS (with on-chip transceiver & LDO), CAN 2.0B (32 mailboxes), 3× SCI, 2× I2C, 2× SPI - enables direct USB device connectivity and automotive-grade fieldbus communication. |
| Package & Temp | 40-pin QFN (6 mm × 6 mm, 0.5 mm pitch), -40°C to +105°C - suitable for space-constrained industrial control modules requiring extended temperature operation. |
| Security & Safety | AES-128/256, TRNG, CAC, IWDT, SRAM ECC, Flash protection - meets IEC 61508 SIL2 and ISO 26262 ASIL-B readiness requirements for functional safety designs. |
Pinout & Package
Package: 40-pin QFN (PWQN0040KC-A / PWQN0040KD-A), 6 mm × 6 mm, 0.5 mm pitch, exposed thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply / Ground | Dual power domains: digital (VCC/VSS) and analog (AVCC0/AVSS0); requires separate 0.1-μF decoupling per domain. |
| USB_DP / USB_DM | USB 2.0 differential data | Integrated full-speed transceiver - no external PHY needed; supports USB device mode with Battery Charging 1.2 detection. |
| CTX0 / CRX0 | CAN transmit/receive | Direct connection to CAN bus via external transceiver; supports ISO 11898-1 compliant messaging with standard/extended IDs. |
| GTIOC0A–GTIOC6A | GPT16 channel I/O | Configurable as PWM output, input capture, or compare match - enables precise motor control (e.g., BLDC commutation) or timing-critical event handling. |
| CTSU00–CTSU10 | Capacitive touch sense channels | 11 dedicated CTSU electrode inputs - allows up to 11 self-capacitive touch buttons without external RC networks or controllers. |
Key Features
| Feature | Design Value |
|---|---|
| Memory Mirror Function (MMF) | Decouples firmware load address from link address - simplifies over-the-air (OTA) updates by allowing new images to be written to unused flash without re-linking. |
| SDADC24 with PGA | Programmable gain instrumentation amplifier front-end - enables direct high-precision measurement of low-level sensor outputs (e.g., strain gauges, thermopiles) without external signal conditioning. |
| Event Link Controller (ELC) | Hardware-triggered peripheral chaining - eliminates CPU polling/interrupt latency; e.g., ADC conversion completion can directly trigger DTC transfer to SRAM. |
| Capacitive Touch Sensing Unit (CTSU) | 11-channel self-capacitive sensing with built-in noise rejection - supports robust touch button/slider implementation in noisy industrial environments with no external components. |
| Low-Power Analog Comparators (ACMPLP ×2) | Configurable speed/power trade-off - selectable high-speed (fast response) or low-speed (ultra-low current) modes for wake-on-event battery monitoring. |
Applications
| Industrial Sensor Node | Smart Appliance Control Panel |
|---|---|
Use Scenario: Compact environmental monitor measuring temperature, humidity, and gas concentration in factory settings with wireless telemetry. IC Role / Device Role / Timing Role: Central controller managing sensor acquisition (via ADC16/SDADC24), local display/UI (via CTSU), and LoRaWAN transmission (via SCI/USB). Use Value: Integrated analog front-end and CTSU eliminate 5+ external ICs; ECC SRAM ensures data integrity during long-term unattended operation. | Use Scenario: Touch-enabled oven or washing machine control panel with real-time status feedback and safety interlocks. IC Role / Device Role / Timing Role: HMI processor handling capacitive touch (CTSU), relay/valve actuation (GPT PWM), and fault monitoring (ACMPHS/ACMPLP voltage thresholds). Use Value: Single-chip solution replaces MCU + touch controller + analog comparator ICs; 105°C rating supports placement near heat sources. |
| USB-C Powered Industrial Tool | Automotive Body Control Module (BCM) Subsystem |
Use Scenario: Portable diagnostic tool powered via USB-C PD that communicates with vehicle ECUs and displays live data. IC Role / Device Role / Timing Role: USB device endpoint (USBFS) with battery charging detection, CAN message gateway (CAN module), and local UI rendering (CTSU + OPAMP-driven display bias). Use Value: On-chip USB transceiver and LDO reduce BOM count; CAN 2.0B compliance ensures interoperability with legacy vehicle networks. | Use Scenario: Seat/mirror position memory module interfacing with LIN master and local potentiometers/sensors. IC Role / Device Role / Timing Role: CAN node collecting seat position (ADC16), mirror angle (SDADC24), and switch inputs (GPIO), with secure storage (AES-128) of user profiles. Use Value: Dual ADC resolution supports both coarse (potentiometer) and fine (Hall effect) sensing; TRNG enables secure key derivation for profile encryption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R7FA2E1A93CFM | 64-pin LQFP, 46 I/O, full peripheral set (3× SCI, 2× CAN, USB), 17-channel ADC16 | Higher I/O count and dual CAN required for complex gateway or multi-sensor aggregation | Select when needing >22 I/O or second CAN channel; not pin-compatible with R7FA2A1AB3CNF#AA0. |
| R7FA4M1AB3CFM | Arm Cortex-M4F core, 48 MHz, FPU, 512-KB flash, 128-KB SRAM, same package options | Floating-point math and larger memory needed for motor control algorithms or real-time analytics | Choose for computationally intensive tasks; software migration required due to different core architecture. |
Compared with R7FA2E1A93CFM and R7FA4M1AB3CFM, the R7FA2A1AB3CNF#AA0 provides optimal balance of analog integration (CTSU, SDADC24, OPAMP), USB/CAN connectivity, and safety features in a compact 40-pin QFN - making it ideal for cost- and space-constrained HMI and sensor edge nodes where M4F performance or dual CAN are unnecessary.
Availability
R7FA2A1AB3CNF#AA0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart appliance control panels, USB-C powered tools, and automotive body control subsystems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for R7FA2A1AB3CNF#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 is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and IoT markets.
The RA2A1 Group, including R7FA2A1AB3CNF#AA0, was designed for ultra-low-power, cost-optimized human-machine interface and sensor-edge applications - emphasizing integrated analog peripherals, security, and seamless USB/CAN connectivity in compact packages.
FAQ
What is the maximum operating frequency and core architecture of the R7FA2A1AB3CNF#AA0?
The R7FA2A1AB3CNF#AA0 features an Arm Cortex-M23 core operating at up to 48 MHz, implementing the Armv8-M architecture with TrustZone security extensions. This core delivers deterministic real-time performance with hardware-enforced memory isolation, making it suitable for applications requiring secure firmware partitioning and low-latency interrupt response - such as industrial HMI and sensor edge nodes where the R7FA2A1AB3CNF#AA0 is deployed.
Does the R7FA2A1AB3CNF#AA0 support USB device functionality without external components?
Yes, the R7FA2A1AB3CNF#AA0 integrates a USB 2.0 Full-Speed transceiver with an internal LDO regulator, enabling direct USB device operation without external PHY or voltage regulation. It supports Battery Charging Specification 1.2 for host-side charging detection and provides five configurable pipes for endpoint management - confirmed in the R01DS0354EJ0111 datasheet section 26. This makes the R7FA2A1AB3CNF#AA0 ideal for portable tools and diagnostics equipment requiring plug-and-play USB connectivity.
How many analog-to-digital converters does the R7FA2A1AB3CNF#AA0 include, and what are their key specifications?
The R7FA2A1AB3CNF#AA0 integrates two distinct ADC subsystems: a 16-bit successive-approximation ADC16 (1.2 Msps, 8 single-ended channels) and a 24-bit sigma-delta SDADC24 (15.6 ksps, 4 single-ended channels) with programmable gain instrumentation amplifier. Both support differential and single-ended inputs, internal reference selection, and on-chip calibration - enabling high-accuracy sensor signal acquisition across dynamic ranges. These capabilities are fully documented for the R7FA2A1AB3CNF#AA0 in sections 32 and 33 of the official datasheet.
What safety and security features are implemented in the R7FA2A1AB3CNF#AA0?
The R7FA2A1AB3CNF#AA0 includes ECC protection for 16-KB of SRAM, parity checking for the remaining 16-KB, Clock Frequency Accuracy Measurement Circuit (CAC), Independent Watchdog Timer (IWDT) with dedicated oscillator, Flash area protection, and AES-128/256 encryption with True Random Number Generator (TRNG). These features collectively support functional safety standards like IEC 61508 SIL2 and enable secure boot and data confidentiality - critical for industrial and automotive applications where the R7FA2A1AB3CNF#AA0 is used.
Is the R7FA2A1AB3CNF#AA0 pin-compatible with other RA2A1 group members?
No, the R7FA2A1AB3CNF#AA0 uses a 40-pin QFN package (PWQN0040KC-A/PWQN0040KD-A), while other RA2A1 variants use 32-pin LQFP, 36-pin BGA, 48-pin QFN, or 64-pin LQFP packages. Pin counts, I/O allocations, and peripheral mappings differ across the family - for example, the 64-pin R7FA2A1AB3CFM offers 46 I/O and full peripheral complement, whereas the R7FA2A1AB3CNF#AA0 provides 22 I/O optimized for compact HMI designs. Migration requires PCB redesign.
R7FA2A1AB3CNF#AA0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 40-WFQFN Exposed Pad
- Series:
- RA2A1
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M23
- Core Size:
- 32-Bit Single-Core
- Speed:
- 48MHz
- Connectivity:
- CANbus, EBI/EMI, I2C, SCI, SPI, UART/USART, USB
- Peripherals:
- Capacitive Touch, DMA, LVD, POR, PWM, WDT
- Number of I/O:
- 22
- Program Memory Size:
- 256KB (256K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 8K x 8
- RAM Size:
- 32K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.6V ~ 5.5V
- Data Converters:
- A/D 8x16b, 4x24b SAR, Sigma-Delta; D/A 2x8b, 1x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R7FA2A1AB3CNF#AA0 FAQ
1.How can I place an order for R7FA2A1AB3CNF#AA0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R7FA2A1AB3CNF#AA0 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 R7FA2A1AB3CNF#AA0 reliable?
The price and inventory of R7FA2A1AB3CNF#AA0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R7FA2A1AB3CNF#AA0 is usually 5 days.
3.What payment methods are accepted for R7FA2A1AB3CNF#AA0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R7FA2A1AB3CNF#AA0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R7FA2A1AB3CNF#AA0?
R7FA2A1AB3CNF#AA0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R7FA2A1AB3CNF#AA0 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 R7FA2A1AB3CNF#AA0?
For technical support, including R7FA2A1AB3CNF#AA0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R7FA2A1AB3CNF#AA0 requirements.
6.How does Aetrix verify that R7FA2A1AB3CNF#AA0 is sourced from the original manufacturer or authorized distributors?
All R7FA2A1AB3CNF#AA0 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 R7FA2A1AB3CNF#AA0 meets industry standards.
7.What is the process for return or replacement of R7FA2A1AB3CNF#AA0?
All R7FA2A1AB3CNF#AA0 units undergo pre-shipment inspection (PSI). If there is an issue with R7FA2A1AB3CNF#AA0, 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 R7FA2A1AB3CNF#AA0 part is unused and in its original packaging.
Return procedure for R7FA2A1AB3CNF#AA0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R7FA2A1AB3CNF#AA0 Tags
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