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Renesas R7FA2E1A73CFL#AA0
- Part No.:
- R7FA2E1A73CFL#AA0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
R7FA2E1A73CFL#AA0.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 48LFQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,981
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Product details
Overview
R7FA2E1A73CFL#AA0 from Renesas is an ultra-low-power 32-bit Arm® Cortex®-M23 microcontroller operating at up to 48 MHz, featuring 64-KB code flash, 16-KB SRAM, a 12-bit ADC, capacitive touch sensing (CTSU2), and integrated security (AES128/256, TRNG). It targets battery-powered HMI, sensor nodes, and industrial control where low power, compact size, and secure firmware execution are critical.
For engineers reviewing the R7FA2E1A73CFL#AA0 datasheet, R7FA2E1A73CFL#AA0 pinout, R7FA2E1A73CFL#AA0 application, or R7FA2E1A73CFL#AA0 equivalent, key selection criteria include its 48-pin LQFP package, -40°C to +105°C industrial temperature grade, CTSU2-based touch interface support, dual watchdog timers (WDT/IWDT), and hardware-accelerated CRC and DOC for functional safety compliance.
Technical Context
The R7FA2E1A73CFL#AA0 implements the Armv8-M architecture with Memory Protection Unit (MPU) supporting eight regions, enabling robust memory isolation in real-time embedded applications. Its clock system integrates multiple oscillators - including HOCO (48 MHz), SOSC (32.768 kHz), and IWDT-dedicated 15-kHz oscillator - allowing precise low-power timing and fail-safe reset generation.
Peripheral integration centers on deterministic event-driven operation: the Event Link Controller (ELC) enables direct peripheral-to-peripheral triggering without CPU intervention, while the Data Transfer Controller (DTC) offloads memory transfers during interrupt servicing. The CTSU2 unit supports up to 20 touch channels with built-in noise immunity, and the ADC12 provides 13 selectable input channels with internal reference and temperature sensor input.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M23, 48 MHz max - delivers efficient real-time control with TrustZone-enabled security partitioning. |
| Memory | 64-KB code flash / 4-KB data flash / 16-KB SRAM with parity - supports field firmware updates and data logging with error detection. |
| Analog | 12-bit ADC (13 ch), 2× ACMPLP, TSN - enables precision sensor interfacing and thermal monitoring without external components. |
| Timers | GPT32 ×1, GPT16 ×6, AGT ×2, RTC, WDT/IWDT - provides flexible PWM generation, motor control, calendar timekeeping, and independent fail-safe reset capability. |
| Connectivity | SCI ×4 (UART/SPI/IIC/Smart Card), IIC ×1, SPI ×1 - supports multi-protocol communication with legacy and modern peripherals. |
| Security | AES128/256, TRNG, CAC, CRC, DOC - meets IEC 61508 SIL2 and ISO 26262 ASIL-B functional safety requirements. |
| Package & Temp | 48-pin LQFP (7 mm × 7 mm, 0.5 mm pitch), -40°C to +105°C - suitable for space-constrained industrial environments with extended thermal range. |
Pinout & Package
Package: 48-pin LQFP (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant Sn finish, industrial-grade (-40°C to +105°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply / Ground | Dual power domains: digital (VCC/VSS) and analog (AVCC0/AVSS0) with dedicated decoupling required for ADC/CTSU stability. |
| P000–P015, P100–P113, etc. | General-purpose I/O | 37 GPIOs with 5-V tolerance on 3 pins, N-ch open-drain outputs (26), pull-up resistors (37) - supports mixed-voltage interfacing and wired-OR logic. |
| SWDIO / SWCLK | Debug interface | 2-pin Serial Wire Debug (SW-DP) - enables non-intrusive programming and real-time trace via standard JTAG/SWD tools. |
| XTAL / EXTAL / XCIN / XCOUT | Clock inputs | Supports external crystal (1–20 MHz), sub-clock (32.768 kHz), and internal oscillators - allows trade-offs between accuracy, power, and BOM cost. |
| AN000–AN010, AN017–AN022 | ADC inputs | 13-channel analog input multiplexer with internal reference and temperature sensor routing - eliminates need for external voltage references in most sensing applications. |
Key Features
| Feature | Design Value |
|---|---|
| Capacitive Touch Sensing Unit (CTSU2) | 20-channel touch support with automatic noise cancellation and self-calibration - enables robust button/slider/knob interfaces without mechanical wear. |
| Low-Power Asynchronous Timers (AGT) | Two 16-bit timers running independently from main clock domain - maintains timing accuracy during deep-sleep modes with sub-µA current draw. |
| Event Link Controller (ELC) | Hardware-triggered peripheral chaining - eliminates CPU polling and ISR latency for time-critical signal processing (e.g., ADC sampling → DMA transfer → CRC check). |
| Data Operation Circuit (DOC) | 16-bit compare/add/subtract engine with interrupt-on-condition - accelerates safety-critical data validation (e.g., checksum verification, limit checking) without software overhead. |
| Independent Watchdog Timer (IWDT) | Dedicated 15-kHz oscillator with refresh error detection - guarantees recovery from lockup even if main clock fails or firmware hangs in interrupt-disabled state. |
Applications
| Smart Thermostat Interface | Industrial Sensor Node |
|---|---|
Use Scenario: Wall-mounted HVAC controller with capacitive touch buttons, ambient temperature/humidity sensing, and wireless connectivity. IC Role / Device Role / Timing Role: Main application MCU handling touch UI, sensor acquisition (ADC + TSN), real-time scheduling (RTC + AGT), and protocol bridging (SCI UART to Wi-Fi module). Use Value: Integrated CTSU2 eliminates external touch controller; 16-KB SRAM buffers sensor logs; AES/TRNG secures OTA firmware updates. | Use Scenario: Battery-powered vibration/temperature monitor deployed in factory machinery with 10-year lifespan requirement. IC Role / Device Role / Timing Role: Ultra-low-power data acquisition node using AGT wake-up, ADC burst sampling, and DTC-assisted CRC-protected transmission over SCI UART. Use Value: Sub-1 µA deep-sleep current extends battery life; CAC validates clock accuracy for time-stamped diagnostics; IWDT ensures reliable recovery after brownout. |
| Medical Patient Monitor Button Panel | Programmable Logic Controller (PLC) I/O Module |
Use Scenario: Front-panel interface for bedside vital sign monitors requiring ESD-hardened, tamper-resistant controls. IC Role / Device Role / Timing Role: Dedicated HMI processor managing capacitive keys, LED indicators, and safety-critical status reporting via isolated SCI. Use Value: CTSU2's built-in noise immunity meets IEC 60601-1 ESD requirements; register write protection prevents accidental configuration changes; 105°C rating supports enclosed enclosures. | Use Scenario: DIN-rail mounted digital I/O expansion module for industrial automation systems with Modbus RTU communication. IC Role / Device Role / Timing Role: Protocol gateway MCU converting discrete GPIO states to Modbus frames using SCI UART and hardware CRC generation. Use Value: Hardware CRC calculator ensures frame integrity; 37 GPIOs support configurable input/output mapping; LVD0/LVD1/LVD2 enable multi-threshold power monitoring for brownout response. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R7FA2E1A93CFL#AA0 | 128-KB flash (vs. 64 KB), same package/peripherals - adds firmware headroom for future feature upgrades. | Preferred for designs requiring larger bootloader or dual-bank OTA update capability. | Select when long-term firmware scalability outweighs BOM cost sensitivity. |
| R7FA2E1A53CFL#AA0 | 32-KB flash, identical 48-pin LQFP package and peripheral set - reduced memory footprint with no layout change. | Suitable for cost-optimized, fixed-function devices with minimal firmware size. | Choose for high-volume production where flash capacity is sufficient and cost reduction is primary. |
Compared with R7FA2E1A73CFL#AA0, the R7FA2E1A93CFL#AA0 offers double flash for complex firmware while maintaining identical pinout and power profile; the R7FA2E1A53CFL#AA0 reduces flash by 50% with no peripheral or timing trade-offs, making it ideal for static-function deployments.
Availability
R7FA2E1A73CFL#AA0 is available at Aetrix Electronics and suitable for smart thermostat interfaces, industrial sensor nodes, medical HMI panels, and PLC I/O modules requiring stable component supply across automotive-grade temperature ranges and long product lifecycles.
Supply support for R7FA2E1A73CFL#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 RA2E1 group is designed for ultra-low-power, cost-sensitive embedded applications demanding security, capacitive touch, and functional safety - targeting battery-operated sensors, HMI, and industrial edge nodes.
FAQ
What is the maximum operating frequency of the R7FA2E1A73CFL#AA0?
The R7FA2E1A73CFL#AA0 operates at a maximum frequency of 48 MHz using the Arm Cortex-M23 core. This speed is achievable with the high-speed on-chip oscillator (HOCO) or external crystal sources. The MCU maintains full peripheral functionality at this rate, including real-time ADC sampling and PWM generation, while staying within its specified 1.6–5.5 V operating voltage range.
Does the R7FA2E1A73CFL#AA0 support capacitive touch sensing?
Yes, the R7FA2E1A73CFL#AA0 integrates the Capacitive Sensing Unit version 2 (CTSU2), supporting up to 20 touch channels. It includes hardware-based noise cancellation, auto-calibration, and direct connection to dedicated touch pins (TSxx), eliminating the need for external touch controllers in applications like appliance control panels and medical device interfaces.
What security features are implemented in the R7FA2E1A73CFL#AA0?
The R7FA2E1A73CFL#AA0 includes AES128/256 encryption engines, a True Random Number Generator (TRNG), Clock Frequency Accuracy Measurement Circuit (CAC), Cyclic Redundancy Check (CRC) calculator, and Data Operation Circuit (DOC). These features collectively support secure boot, encrypted communication, and functional safety diagnostics per IEC 61508 and ISO 26262 standards.
What is the operating temperature range for the R7FA2E1A73CFL#AA0?
The R7FA2E1A73CFL#AA0 is rated for industrial operation from -40°C to +105°C. This extended temperature range is validated for the 48-pin LQFP package (CFL) and enables deployment in harsh environments such as factory floors, outdoor metering equipment, and enclosed medical devices without thermal derating.
How many general-purpose I/O pins does the R7FA2E1A73CFL#AA0 provide?
The R7FA2E1A73CFL#AA0 provides 37 general-purpose I/O pins in its 48-pin LQFP package. Of these, 3 pins support 5-V tolerance, 26 support N-ch open-drain output, and all 37 include programmable pull-up resistors - enabling flexible interfacing with legacy 5-V logic, I²C buses, and push-button inputs without external components.
R7FA2E1A73CFL#AA0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 48-LQFP
- Series:
- RA2E1
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M23
- Core Size:
- 32-Bit Single-Core
- Speed:
- 48MHz
- Connectivity:
- I2C, SmartCard, SPI, UART/USART
- Peripherals:
- AES, Capacitive Touch, DMA, LVD, POR, PWM, Temp Sensor, TRNG, WDT
- Number of I/O:
- 37
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 4K x 8
- RAM Size:
- 16K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.6V ~ 5.5V
- Data Converters:
- A/D 13x12b SAR
- Oscillator Type:
- External, Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R7FA2E1A73CFL#AA0 FAQ
1.How can I place an order for R7FA2E1A73CFL#AA0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R7FA2E1A73CFL#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 R7FA2E1A73CFL#AA0 reliable?
The price and inventory of R7FA2E1A73CFL#AA0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R7FA2E1A73CFL#AA0 is usually 5 days.
3.What payment methods are accepted for R7FA2E1A73CFL#AA0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R7FA2E1A73CFL#AA0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R7FA2E1A73CFL#AA0?
R7FA2E1A73CFL#AA0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R7FA2E1A73CFL#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 R7FA2E1A73CFL#AA0?
For technical support, including R7FA2E1A73CFL#AA0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R7FA2E1A73CFL#AA0 requirements.
6.How does Aetrix verify that R7FA2E1A73CFL#AA0 is sourced from the original manufacturer or authorized distributors?
All R7FA2E1A73CFL#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 R7FA2E1A73CFL#AA0 meets industry standards.
7.What is the process for return or replacement of R7FA2E1A73CFL#AA0?
All R7FA2E1A73CFL#AA0 units undergo pre-shipment inspection (PSI). If there is an issue with R7FA2E1A73CFL#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 R7FA2E1A73CFL#AA0 part is unused and in its original packaging.
Return procedure for R7FA2E1A73CFL#AA0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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