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Renesas R7FA2L1AB3CNE#AA0
- Part No.:
- R7FA2L1AB3CNE#AA0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 48-WFQFN Exposed Pad
- Datasheet:
-
R7FA2L1AB3CNE#AA0.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 48HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:612
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Product details
Overview
R7FA2L1AB3CNE#AA0 from Renesas is an ultra-low-power 48 MHz Arm® Cortex®-M23 microcontroller with 256 KB code flash, 32 KB SRAM, 12-bit ADC/DAC, Capacitive Touch Sensing Unit (CTSU2), CAN interface, and integrated security features including AES128/256 and TRNG. It operates from 1.6–5.5 V across –40°C to +85°C and targets battery-powered HMI, industrial sensors, and smart metering.
For engineers reviewing the R7FA2L1AB3CNE#AA0 datasheet, R7FA2L1AB3CNE#AA0 pinout, R7FA2L1AB3CNE#AA0 application, or R7FA2L1AB3CNE#AA0 equivalent, this page delivers verified specifications, package mapping to 48-pin HWQFN, functional pin roles, real-world use cases, and two validated alternative parts for design flexibility and supply continuity.
Technical Context
The R7FA2L1AB3CNE#AA0 implements the Armv8-M architecture with Memory Protection Unit (8 regions) and CoreSight™ MTB-M23 trace. Its system-level timing relies on multiple clock sources - including HOCO (48 MHz), SOSC (32.768 kHz), and IWDT-dedicated 15 kHz oscillator - enabling precise low-power operation with CAC-based frequency accuracy monitoring.
Peripheral integration centers on event-driven efficiency: the Event Link Controller (ELC) enables direct module-to-module triggering without CPU intervention, while the Data Transfer Controller (DTC) handles memory-mapped transfers autonomously. Safety is enforced via ECC in SRAM, flash area protection, ADC self-diagnosis, and dual watchdogs (WDT + IWDT).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M23 @ 48 MHz max - energy-efficient execution with MPU and TrustZone-ready architecture |
| Memory | 256 KB code flash + 8 KB data flash + 32 KB SRAM with ECC - supports firmware updates and secure data logging |
| Analog Peripherals | 12-bit ADC (19 ch), 12-bit DAC (1 ch), 2× ACMPLP, TSN - enables sensor signal acquisition and analog output control |
| Connectivity | CAN 2.0A/B, 5× SCI, 2× I2C, 2× SPI - robust industrial communication with ISO 11898-1 compliance |
| Human Interface | Capacitive Sensing Unit (CTSU2) with up to 32 touch channels - supports button/slider/gesture detection without external components |
| Power & Safety | 1.6–5.5 V operation, LVD with 3 thresholds, IWDT with independent clock, CRC/DOC - ensures reliability in fluctuating supply environments |
| Package & Temp | 48-pin HWQFN (7 mm × 7 mm, 0.5 mm pitch), –40°C to +85°C - compact footprint suitable for space-constrained industrial PCBs |
Pinout & Package
Package: 48-pin HWQFN (PWQN0048KC-A), exposed die pad recommended to be connected to VSS or left floating per Renesas design guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply / Ground | Dual power domains: digital core (VCC/VSS) and analog (AVCC0/AVSS0); decoupling required per pin |
| P000–P015, P100–P115, etc. | General-purpose I/O | 34 total GPIOs with 5-V tolerance on 4 pins, N-ch open-drain capability, and internal pull-up resistors |
| SWDIO / SWCLK | Debug interface | 2-pin Serial Wire Debug for programming and real-time trace without dedicated JTAG pins |
| XTAL / EXTAL / XCIN / XCOUT | Clock inputs | Supports external crystal (1–20 MHz), sub-clock (32.768 kHz), and internal oscillators for flexible timing architecture |
| CTX0 / CRX0 | CAN transceiver interface | Direct connection to external CAN transceiver (e.g., TJA1042); requires external bus termination |
| TS00–TS35-CFC | Capacitive touch sensing | Up to 32 dedicated CTSU2 channels for self- or mutual-capacitance measurement in HMI applications |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | Multiple low-power modes with sub-μA RTC retention and AGT timer wake-up - extends battery life in portable devices |
| Integrated security engine | AES128/256 hardware accelerator + True Random Number Generator - enables secure boot, encrypted communication, and key generation |
| Event-driven peripheral linking | Event Link Controller (ELC) connects ADC conversion completion directly to DTC transfer start - eliminates CPU polling overhead |
| Functional safety support | SRAM ECC, flash protection, ADC self-test, CAC clock monitoring, and dual WDT/IWDT - meets IEC 61508 SIL2 readiness requirements |
| Capacitive touch with noise immunity | CTSU2 with spread-spectrum modulation and shield drive - achieves >60 Vrms common-mode noise rejection in noisy industrial environments |
Applications
| Smart Home Thermostat | Industrial Sensor Node |
|---|---|
Use Scenario: Wall-mounted HVAC controller with capacitive touch buttons, temperature/humidity sensing, and wireless gateway communication. IC Role / Device Role / Timing Role: Main application MCU managing CTSU2 touch interface, ADC sampling of analog sensors, RTC-based scheduling, and CAN/SCI communication to building management system. Use Value: Single-chip integration reduces BOM count by eliminating discrete touch controller and analog front-end; 256 KB flash supports OTA firmware updates. | Use Scenario: Battery-powered vibration/temperature node deployed in factory machinery with CAN bus connectivity to PLC. IC Role / Device Role / Timing Role: Low-power data acquisition MCU using AGT timer for periodic wake-up, ADC for sensor reads, and CAN for deterministic industrial messaging. Use Value: Sub-μA deep-sleep current and IWDT fail-safe reset ensure multi-year operation and safe recovery from brown-out conditions. |
| Smart Energy Meter | Medical Patient Monitor Panel |
Use Scenario: DIN-rail mounted electricity meter with tamper detection, pulse output, and secure metrology data logging. IC Role / Device Role / Timing Role: Secure host MCU executing AES-encrypted data storage in data flash, CAC-monitored clock for accurate time-stamping, and DAC-driven calibration reference. Use Value: Hardware TRNG and flash write-protection prevent cloning and unauthorized firmware modification per IEC 62055-41 requirements. | Use Scenario: Bedside patient monitor with capacitive touch UI, ECG signal conditioning, and isolated UART to main processing unit. IC Role / Device Role / Timing Role: Human interface co-processor handling CTSU2 touch gestures, ACMPLP-based lead-off detection, and SPI-connected ADC for analog front-end control. Use Value: Integrated 12-bit DAC generates precise reference voltages for analog signal chain calibration, reducing external component count. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R7FA2L1AB2DFL#AA0 | Same RA2L1 family, identical 48-pin LQFP package, but rated for –40°C to +85°C (same temp grade), lower flash endurance (10k vs. 100k P/E cycles in data flash) | Targeted at cost-sensitive consumer applications where extended data flash write cycles are not required | Select when full 100k-cycle data flash endurance is unnecessary and LQFP is preferred over HWQFN for assembly process compatibility |
| R7FA4M1AB3CFP#AA0 | RA4M1 family, 100-pin LQFP, Arm Cortex-M4F @ 48 MHz, 512 KB flash, FPU, higher peripheral count (USB, Ethernet MAC), no CTSU2 | Suitable for applications requiring floating-point math, USB device/host, or larger memory footprint - not a drop-in replacement | Choose when migrating to higher performance with FPU and USB, accepting larger footprint and loss of integrated capacitive touch capability |
Compared with R7FA2L1AB3CNE#AA0, the R7FA2L1AB2DFL#AA0 offers identical functionality in LQFP packaging but reduced data flash endurance, while the R7FA4M1AB3CFP#AA0 provides significantly more compute and connectivity resources at the expense of touch integration and package size - guiding selection based on thermal, space, and feature trade-offs.
Availability
R7FA2L1AB3CNE#AA0 is available at Aetrix Electronics and suitable for smart metering, industrial sensor nodes, and capacitive-touch HMI applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for R7FA2L1AB3CNE#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 delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT markets, with over 40 years of microcontroller innovation.
The RA2L1 group is designed specifically for ultra-low-power, cost-sensitive industrial and consumer HMI applications - emphasizing capacitive touch integration, security, and seamless scalability within the RA ecosystem.
FAQ
What is the operating voltage range supported by the R7FA2L1AB3CNE#AA0?
The R7FA2L1AB3CNE#AA0 supports a wide operating voltage range of 1.6 V to 5.5 V, enabling direct interfacing with both 1.8 V logic and legacy 5 V systems. This flexibility simplifies power architecture design in mixed-voltage applications such as industrial gateways and battery-powered sensors where input voltage may vary significantly during operation.
Does the R7FA2L1AB3CNE#AA0 include hardware encryption capabilities?
Yes, the R7FA2L1AB3CNE#AA0 integrates dedicated AES128/256 encryption engines and a True Random Number Generator (TRNG). These hardware accelerators enable fast, secure cryptographic operations - including secure boot verification, encrypted firmware updates, and TLS handshake acceleration - without burdening the Cortex-M23 core or compromising real-time responsiveness.
Can the R7FA2L1AB3CNE#AA0 drive a CAN bus directly?
No, the R7FA2L1AB3CNE#AA0 contains a CAN protocol controller (CAN module compliant with ISO 11898-1), but it requires an external CAN transceiver (e.g., TJA1042 or SN65HVD230) to drive the physical bus. The CTX0 and CRX0 pins provide differential signal interfaces to the transceiver, and proper bus termination must be implemented externally.
How many capacitive touch channels does the R7FA2L1AB3CNE#AA0 support via CTSU2?
The R7FA2L1AB3CNE#AA0 supports up to 32 capacitive touch sensing channels via its CTSU2 peripheral, with configurable electrode drive patterns and built-in noise cancellation. In the 48-pin HWQFN package, up to 20 dedicated CTSU2 pins (e.g., TS00, TS02-CFC, TS04–TS16-CFC, TS21–TS35-CFC) are available for touch button, slider, or proximity sensing implementations.
What debug interface does the R7FA2L1AB3CNE#AA0 use, and is JTAG supported?
The R7FA2L1AB3CNE#AA0 uses Serial Wire Debug (SWD) with SWDIO and SWCLK pins - a 2-pin ARM-standard interface that replaces full JTAG. It does not support traditional 5-pin JTAG; however, SWD provides equivalent programming, debugging, and real-time trace capabilities through tools like Renesas E2 studio and Segger J-Link, with minimal PCB routing overhead.
R7FA2L1AB3CNE#AA0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 48-WFQFN Exposed Pad
- Series:
- RA2L1
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M23
- Core Size:
- 32-Bit Single-Core
- Speed:
- 48MHz
- Connectivity:
- CANbus, I2C, SCI, SPI, Smart Card, UART/USART
- Peripherals:
- AES, Capacitive Touch, DMA, LVD, POR, PWM, Temp Sensor, TRNG, WDT
- Number of I/O:
- 37
- 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 13x12b SAR; D/A 1x12b
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R7FA2L1AB3CNE#AA0 FAQ
1.How can I place an order for R7FA2L1AB3CNE#AA0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R7FA2L1AB3CNE#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 R7FA2L1AB3CNE#AA0 reliable?
The price and inventory of R7FA2L1AB3CNE#AA0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R7FA2L1AB3CNE#AA0 is usually 5 days.
3.What payment methods are accepted for R7FA2L1AB3CNE#AA0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R7FA2L1AB3CNE#AA0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R7FA2L1AB3CNE#AA0?
R7FA2L1AB3CNE#AA0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R7FA2L1AB3CNE#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 R7FA2L1AB3CNE#AA0?
For technical support, including R7FA2L1AB3CNE#AA0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R7FA2L1AB3CNE#AA0 requirements.
6.How does Aetrix verify that R7FA2L1AB3CNE#AA0 is sourced from the original manufacturer or authorized distributors?
All R7FA2L1AB3CNE#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 R7FA2L1AB3CNE#AA0 meets industry standards.
7.What is the process for return or replacement of R7FA2L1AB3CNE#AA0?
All R7FA2L1AB3CNE#AA0 units undergo pre-shipment inspection (PSI). If there is an issue with R7FA2L1AB3CNE#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 R7FA2L1AB3CNE#AA0 part is unused and in its original packaging.
Return procedure for R7FA2L1AB3CNE#AA0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R7FA2L1AB3CNE#AA0 Tags
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ATTINY4-TSHR
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