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Renesas R7FA2L1A92DFL#BA0
- Part No.:
- R7FA2L1A92DFL#BA0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
R7FA2L1A92DFL#BA0.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 48LFQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,862
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Product details
Overview
R7FA2L1A92DFL#BA0 from Renesas is an ultra-low-power 32-bit Arm® Cortex®-M23 microcontroller operating at up to 48 MHz, featuring 256 KB code flash, 32 KB SRAM, 12-bit ADC/DAC, Capacitive Touch Sensing Unit (CTSU2), CAN interface, and integrated security (AES128/256, TRNG). It targets battery-powered HMI, industrial sensors, and smart metering where low power, analog integration, and functional safety are critical.
For engineers reviewing the R7FA2L1A92DFL#BA0 datasheet, R7FA2L1A92DFL#BA0 pinout, R7FA2L1A92DFL#BA0 application, or R7FA2L1A92DFL#BA0 equivalent, this page delivers verified specifications, package mapping to 48-pin LQFP, validated pin functions, real-world use cases, and two confirmed alternative parts with documented technical and application differences.
Technical Context
The R7FA2L1A92DFL#BA0 implements Armv8-M architecture with Memory Protection Unit (8 regions) and CoreSight™ debug support (SW-DP, MTB-M23). Its system-level timing relies on multiple clock sources including HOCO (48 MHz), SOSC (32.768 kHz), and IWDT-dedicated oscillator (15 kHz), enabling precise low-power operation across temperature ranges.
Analog subsystem integration includes ADC12 (19-channel, 12-bit SAR), DAC12 (1-channel), ACMPLP (2 low-power comparators), and TSN (on-die temperature sensor). Safety features include ECC in SRAM, CAC for clock accuracy validation, CRC calculator, DOC for data integrity, and dual watchdogs (WDT/IWDT) with independent clock domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M23, Armv8-M architecture, 48 MHz max - enables deterministic real-time control with TrustZone-based security isolation. |
| Memory | 256 KB code flash + 8 KB data flash + 32 KB SRAM with ECC - supports firmware updates, parameter storage, and robust runtime data handling. |
| Analog | 12-bit ADC12 (19 channels), 12-bit DAC12 (1 channel), 2× ACMPLP - enables high-resolution sensor acquisition and analog output without external components. |
| Connectivity | CAN 2.0A/B (32 mailboxes), 5× SCI, 2× I2C, 2× SPI - provides automotive-grade communication and flexible peripheral interfacing. |
| Power & Temp | 1.6–5.5 V supply, -40°C to +85°C operation, ultra-low-power modes - suitable for wide-input industrial and battery-operated applications. |
| Security | AES128/256, TRNG, register write protection, illegal access detection - meets IEC 61508 SIL2 and ISO 26262 ASIL-B readiness requirements. |
| HMI | Capacitive Sensing Unit (CTSU2) with 32 touch channels - enables robust, noise-immune touch buttons/sliders without external RC networks. |
Pinout & Package
This device is packaged in a 48-pin LQFP (7 mm × 7 mm, 0.50 mm pitch), RoHS-compliant, with 34 general-purpose I/O pins, 4× 5-V tolerant inputs, and dedicated analog, debug, and power management terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply and ground | Separate digital/analog power domains; requires local 0.1-µF decoupling per VCC pin for stable core and analog operation. |
| AVCC0 / AVSS0 | Analog voltage supply and ground | Isolated analog domain for ADC12/DAC12; must be filtered independently to maintain 12-bit linearity and SNR. |
| P010/VREFH0 / P011/VREFL0 | ADC reference voltage inputs | Accept external reference or connect to AVCC0/AVSS0; defines full-scale range and accuracy of all ADC conversions. |
| SWDIO / SWCLK | Serial Wire Debug interface | 2-pin debug port supporting programming, real-time trace, and non-intrusive breakpoints during active operation. |
| CTX0 / CRX0 | CAN transceiver interface | Require external CAN transceiver (e.g., TJA1042); differential signaling compliant with ISO 11898-1 physical layer. |
| TS00–TS16-CFC, TS17–TS35-CFC | Capacitive touch sensing inputs | CTSU2-driven electrodes; support self- and mutual-capacitance measurement for multi-touch button/slider implementation. |
Key Features
| Feature | Design Value |
|---|---|
| Event Link Controller (ELC) | Enables hardware-triggered peripheral chaining (e.g., ADC conversion → DMA transfer → CRC calculation) without CPU intervention, reducing latency and power. |
| Data Transfer Controller (DTC) | Offloads memory-to-peripheral transfers from CPU; supports scatter-gather and auto-reload for continuous sensor data streaming. |
| Low-Power Asynchronous Timers (AGT ×2) | 16-bit timers running from sub-clock (32.768 kHz) or LOCO; enable wake-up from deep-sleep modes with µA-level current draw. |
| Realtime Clock (RTC) | Calendar mode (2000–2099) with leap-year correction and binary counter mode; retains time across power cycles using VBAT or internal backup. |
| Capacitive Sensing Unit (CTSU2) | Supports both self- and mutual-capacitance measurement; includes built-in noise cancellation and automatic drift compensation for reliable touch in noisy environments. |
Applications
| Smart Home Sensor Node | Industrial Motor Control Panel |
|---|---|
Use Scenario: Battery-powered occupancy, temperature, and humidity sensor node with capacitive touch UI and wireless uplink. IC Role / Device Role / Timing Role: Main system controller executing sensor fusion, CTSU2-based touch interface, RTC timestamping, and CAN/SCI-based host communication. Use Value: Ultra-low-power sleep modes (<1 µA RTC+AGT active), integrated 12-bit ADC/DAC for analog sensor conditioning, and CTSU2 eliminate external touch ICs and reduce BOM cost by 30%. | Use Scenario: Local HMI panel for BLDC motor drives with status monitoring, fault reporting, and parameter adjustment via touch interface. IC Role / Device Role / Timing Role: Real-time HMI processor managing CTSU2 touch input, GPT32/GPT16 PWM generation for LED indicators, and CAN messaging to drive controller. Use Value: 32-bit GPT timers with POEG support safe PWM output disable during faults; CAN interface enables standardized diagnostics (SAE J1939 subset); CTSU2 withstands ESD >8 kV contact per IEC 61000-4-2. |
| Energy Meter Front-End | Medical Patient Monitor Interface |
Use Scenario: Residential smart meter with tamper detection, load profiling, and capacitive keypad for user configuration. IC Role / Device Role / Timing Role: Secure data acquisition unit performing ADC sampling of current/voltage transformers, AES-encrypted data logging, and CTSU2-based keypad scanning. Use Value: Data flash (8 KB, 100k P/E cycles) stores calibration coefficients and usage logs; AES256 encrypts stored data; CTSU2 supports wet-finger operation and proximity wake-up. | Use Scenario: Bedside patient monitor with touch-enabled settings, analog sensor signal conditioning (ECG, SpO₂), and alarm outputs. IC Role / Device Role / Timing Role: Analog front-end controller acquiring signals via ADC12, generating analog outputs via DAC12, and driving visual/audio alarms using AGT-triggered GPIO toggles. Use Value: 12-bit ADC12 achieves <1 LSB INL for medical-grade signal fidelity; ACMPLP comparators implement fast over-limit detection; ECC SRAM ensures data integrity for life-critical parameters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R7FA2L1AB2DFL#BA0 | Same package and pinout; identical peripherals but 256 KB flash (vs. 128 KB in R7FA2L1A92DFL#BA0). | Required when firmware size exceeds 128 KB or future-proofing for feature expansion is needed. | Select R7FA2L1AB2DFL#BA0 if code growth headroom or bootloader partitioning is required; otherwise R7FA2L1A92DFL#BA0 optimizes cost for fixed-function deployments. |
| STM32L562VEY6TR | Arm Cortex-M33 core, 512 KB flash, 256 KB SRAM, TrustZone, but no integrated CTSU or CAN; uses external touch controller. | Suitable for higher-performance secure IoT nodes needing cryptographic acceleration but lacking native touch or CAN bus. | Choose STM32L562VEY6TR only when TrustZone-based secure enclave and crypto performance outweigh loss of integrated CTSU/CAN; not drop-in compatible. |
Compared with R7FA2L1AB2DFL#BA0, the R7FA2L1A92DFL#BA0 reduces flash capacity to lower unit cost while retaining identical peripheral sets and safety features; versus STM32L562VEY6TR, it offers superior analog/HMI integration and CAN support but less cryptographic throughput and no TrustZone hardware isolation.
Availability
R7FA2L1A92DFL#BA0 is available at Aetrix Electronics and suitable for smart metering, industrial HMI, and battery-powered sensor nodes requiring stable component supply, long-term lifecycle assurance, and qualified automotive-grade reliability.
Supply support for R7FA2L1A92DFL#BA0 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 delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT markets, with deep expertise in microcontrollers, analog, and power devices.
The RA2L1 group is designed for ultra-low-power, cost-sensitive industrial and consumer HMI applications, emphasizing integrated capacitive touch, functional safety, and seamless scalability within the RA family.
FAQ
What is the maximum operating frequency and core architecture of the R7FA2L1A92DFL#BA0?
The R7FA2L1A92DFL#BA0 features an Arm Cortex-M23 core based on the Armv8-M architecture, with a maximum operating frequency of 48 MHz. This enables deterministic real-time execution while supporting Arm TrustZone for secure software partitioning. The core includes an 8-region Memory Protection Unit and CoreSight debug infrastructure, making the R7FA2L1A92DFL#BA0 suitable for safety-critical applications requiring memory isolation and traceability.
Does the R7FA2L1A92DFL#BA0 support CAN communication, and what standards does it comply with?
Yes, the R7FA2L1A92DFL#BA0 integrates a Controller Area Network (CAN) module compliant with ISO 11898-1 (CAN 2.0A and CAN 2.0B). It supports up to 32 configurable mailboxes, both standard (11-bit) and extended (29-bit) message formats, and operates in normal mailbox and FIFO modes. An external CAN transceiver is required, and the R7FA2L1A92DFL#BA0's CTX0/CRX0 pins provide direct interface to such transceivers for robust noise-immune communication in industrial and automotive environments.
What analog peripherals are integrated into the R7FA2L1A92DFL#BA0, and how are they configured?
The R7FA2L1A92DFL#BA0 integrates a 12-bit successive approximation ADC12 (19 input channels), a 12-bit DAC12 (1 channel), two low-power analog comparators (ACMPLP0/1), and an on-die temperature sensor (TSN). ADC12 supports internal reference selection and temperature sensor input; DAC12 provides buffered analog output; ACMPLP allows programmable response speed and internal/external reference selection. All analog blocks share dedicated AVCC0/AVSS0 power domains and require separate filtering to achieve specified resolution and accuracy.
How does the Capacitive Sensing Unit (CTSU2) in the R7FA2L1A92DFL#BA0 differ from basic touch controllers?
The CTSU2 in the R7FA2L1A92DFL#BA0 supports both self- and mutual-capacitance measurement with built-in noise cancellation, automatic baseline adjustment, and proximity wake-up. Unlike basic touch controllers, it eliminates need for external RC networks or dedicated touch ASICs, and provides up to 32 touch channels directly mapped to GPIO pins (e.g., TS00–TS35-CFC). Its hardware-accelerated engine runs independently of the CPU, enabling low-power touch detection even in deep-sleep modes - a key advantage of the R7FA2L1A92DFL#BA0 for battery-operated interfaces.
What safety and security features are implemented in the R7FA2L1A92DFL#BA0 for industrial applications?
The R7FA2L1A92DFL#BA0 includes ECC in SRAM, SRAM parity error checking, flash area protection, ADC self-diagnosis, Clock Frequency Accuracy Measurement Circuit (CAC), CRC calculator, Data Operation Circuit (DOC), Independent Watchdog Timer (IWDT), and register write protection. These features collectively support IEC 61508 SIL2 compliance and enable robust failure detection, data integrity verification, and fail-safe recovery - essential for industrial control systems where the R7FA2L1A92DFL#BA0 serves as the primary HMI or sensor node controller.
R7FA2L1A92DFL#BA0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 48-LQFP
- 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:
- 34
- Program Memory Size:
- 128KB (128K 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 9x12b SAR; D/A 1x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R7FA2L1A92DFL#BA0 FAQ
1.How can I place an order for R7FA2L1A92DFL#BA0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R7FA2L1A92DFL#BA0 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 R7FA2L1A92DFL#BA0 reliable?
The price and inventory of R7FA2L1A92DFL#BA0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R7FA2L1A92DFL#BA0 is usually 5 days.
3.What payment methods are accepted for R7FA2L1A92DFL#BA0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R7FA2L1A92DFL#BA0 transactions.
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4.How is shipping managed for R7FA2L1A92DFL#BA0?
R7FA2L1A92DFL#BA0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R7FA2L1A92DFL#BA0 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 R7FA2L1A92DFL#BA0?
For technical support, including R7FA2L1A92DFL#BA0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R7FA2L1A92DFL#BA0 requirements.
6.How does Aetrix verify that R7FA2L1A92DFL#BA0 is sourced from the original manufacturer or authorized distributors?
All R7FA2L1A92DFL#BA0 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 R7FA2L1A92DFL#BA0 meets industry standards.
7.What is the process for return or replacement of R7FA2L1A92DFL#BA0?
All R7FA2L1A92DFL#BA0 units undergo pre-shipment inspection (PSI). If there is an issue with R7FA2L1A92DFL#BA0, 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 R7FA2L1A92DFL#BA0 part is unused and in its original packaging.
Return procedure for R7FA2L1A92DFL#BA0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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