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Renesas R7FA2E1A73CNH#AA0
- Part No.:
- R7FA2E1A73CNH#AA0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
R7FA2E1A73CNH#AA0.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 32HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,128
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Product details
Overview
R7FA2E1A73CNH#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, secure firmware updates, and analog integration are critical.
For engineers reviewing the R7FA2E1A73CNH#AA0 datasheet, R7FA2E1A73CNH#AA0 pinout, R7FA2E1A73CNH#AA0 application, or R7FA2E1A73CNH#AA0 equivalent, key selection factors include its 32-pin HWQFN package, -40°C to +105°C industrial temperature grade, 1.6–5.5 V wide supply range, and support for CTSU2-based touch interfaces with minimal external components.
Technical Context
The R7FA2E1A73CNH#AA0 implements the Armv8-M architecture with Memory Protection Unit (MPU) and CoreSight™ debug infrastructure, enabling secure, scalable embedded applications. Its clock system integrates HOCO (48 MHz), SOSC (32.768 kHz), and LOCO oscillators with CAC for real-time frequency accuracy monitoring.
It delivers deterministic timing via GPT32 ×1 and GPT16 ×6 timers, AGT ×2 for low-power event counting, and RTC with calendar mode. Analog subsystem includes ADC12 (13-channel), ACMPLP ×2, and TSN - all accessible without CPU intervention using ELC and DTC for autonomous peripheral coordination.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M23 @ 48 MHz max; supports TrustZone for secure firmware partitioning and MPU-based memory isolation. |
| Memory | 64 KB code flash (100k P/E cycles), 4 KB data flash, 16 KB SRAM with parity; enables robust firmware storage and runtime data integrity. |
| Analog Peripherals | 12-bit ADC12 (13 channels), 2× ACMPLP, on-die Temperature Sensor (TSN); supports sensor fusion and battery voltage monitoring. |
| Touch Interface | Capacitive Sensing Unit CTSU2 with up to 11 touch pins; achieves <1 µA average current in touch-scan mode for multi-button UIs. |
| Security | AES128/256 hardware accelerator + True Random Number Generator (TRNG); accelerates secure boot and encrypted OTA updates. |
| Package & Temp | 32-pin HWQFN (5 mm × 5 mm, 0.5 mm pitch), -40°C to +105°C industrial grade; suitable for compact, thermally demanding environments. |
| I/O Features | 23 GPIOs (15 N-ch open-drain, 3× 5-V tolerant), KINT for wake-on-key, and configurable pull-ups; simplifies direct connection to switches, LEDs, and legacy logic. |
Pinout & Package
Package: 32-pin HWQFN (5 mm × 5 mm, 0.5 mm pitch), exposed thermal pad recommended to be connected to VSS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply / Ground | Dual VCC pins (pins 1, 32) and dual VSS pins (pins 16, 17) enable low-noise analog/digital separation and stable decoupling. |
| P000–P015, P100–P113, etc. | General-purpose I/O | 23 programmable GPIOs with configurable drive strength, pull-up, and open-drain; supports key interrupt (KINT) and event linking (ELC). |
| SWDIO / SWCLK | Debug interface | 2-pin Serial Wire Debug (SW-DP) for programming and real-time trace; requires no external debug adapter beyond standard CMSIS-DAP. |
| XTAL / EXTAL / XCIN / XCOUT | Crystal oscillator inputs | Supports main crystal (1–20 MHz), sub-clock (32.768 kHz), and internal HOCO/MOCO/LOCO; CAC validates oscillator stability autonomously. |
| AVCC0 / AVSS0 / VREFH0 / VREFL0 | Analog power & reference | Dedicated analog supply and reference pins isolate noise-sensitive ADC/CTSU operation from digital switching transients. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | 120 µA/MHz active current; 0.25 µA deep standby with RTC + RAM retention - extends coin-cell life to >5 years in periodic-sense applications. |
| Capacitive touch sensing (CTSU2) | Hardware-accelerated touch detection with auto-calibration; supports up to 11 electrodes with <50 ms full-scan time and noise immunity up to ±2 kV ESD. |
| Event Link Controller (ELC) | Direct peripheral-to-peripheral triggering without CPU involvement - e.g., ADC conversion start on timer match, or PWM output disable on comparator threshold breach. |
| Data Transfer Controller (DTC) | Hardware DMA engine supporting scatter-gather transfers; offloads CPU during SPI/I2C/ADC data movement, reducing ISR latency by >90%. |
| Security & Safety | Hardware AES engine, TRNG, SRAM parity, flash protection, and independent watchdog (IWDT) with dedicated 15 kHz oscillator - meets IEC 61508 SIL2 functional safety requirements. |
Applications
| Smart Thermostat Interface | Industrial Sensor Node |
|---|---|
Use Scenario: Battery-powered wall-mounted thermostat with capacitive touch buttons, ambient temperature/humidity sensing, and BLE connectivity. IC Role / Device Role / Timing Role: Main controller executing touch UI, ADC sampling, and BLE stack scheduling; RTC maintains accurate timekeeping across sleep cycles. Use Value: CTSU2 enables zero-bounce touch response with <1 µA scan current; 16 KB SRAM retains BLE connection context during deep sleep, minimizing reconnection latency. | Use Scenario: Wireless vibration/temperature node mounted on motor housing, logging data every 10 seconds and transmitting via LoRaWAN. IC Role / Device Role / Timing Role: Data acquisition hub managing TSN, ADC12, and ACMPLP thresholds; AGT timers trigger periodic wake-up and sensor reads. Use Value: 0.25 µA deep standby + RTC alarm reduces average current to <2 µA; AES256 encrypts sensor payloads before transmission to prevent tampering. |
| Medical Wearable Monitor | Home Appliance Control Panel |
Use Scenario: Disposable ECG patch with dry-electrode sensing, motion compensation, and Bluetooth LE telemetry. IC Role / Device Role / Timing Role: Signal processor running real-time filtering algorithms; CTSU2 detects electrode contact quality; ADC12 digitizes analog front-end outputs. Use Value: 12-bit ADC with internal reference eliminates external voltage references; TRNG seeds cryptographic keys for HIPAA-compliant data encryption. | Use Scenario: Microwave oven control board requiring touch UI, relay drivers, fault detection, and energy metering. IC Role / Device Role / Timing Role: System manager handling user input (CTSU2), appliance state control (GPT PWM), overtemperature shutdown (ACMPLP), and energy pulse counting (AGT). Use Value: 5-V tolerant GPIOs interface directly with legacy relay drivers; IWDT ensures fail-safe shutdown if firmware hangs during cooking cycle. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R7FA2E1A72DFJ#AA0 | Same core, memory, and peripherals but rated for -40°C to +85°C; lacks sub-clock oscillator (SOSC) and CAC circuit. | Suitable for consumer-grade indoor appliances without precision RTC or oscillator validation needs. | Select when industrial temperature range and autonomous clock monitoring are not required. |
| STM32L071KBT6 | Arm Cortex-M0+, 32 KB flash, 8 KB SRAM, no CTSU2; includes USB and LCD driver; lower max frequency (32 MHz). | Better for USB-connected devices or segment LCD displays; weaker analog/touch capability and no hardware AES. | Choose only if USB interface or built-in LCD driver is mandatory and touch performance is secondary. |
Compared with R7FA2E1A72DFJ#AA0 and STM32L071KBT6, the R7FA2E1A73CNH#AA0 uniquely combines industrial temperature rating, CTSU2 touch engine, and hardware AES in a 32-pin HWQFN - enabling secure, touch-enabled edge nodes without external ICs or thermal derating.
Availability
R7FA2E1A73CNH#AA0 is available at Aetrix Electronics and suitable for smart home controllers, industrial sensor nodes, medical wearables, and appliance HMI requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for R7FA2E1A73CNH#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 automotive, industrial, and IoT markets.
The RA2E1 group is designed for cost-sensitive, ultra-low-power embedded applications demanding security, analog integration, and capacitive touch - targeting battery-operated sensors, HMI, and industrial controls.
FAQ
What is the maximum operating frequency of the R7FA2E1A73CNH#AA0?
The R7FA2E1A73CNH#AA0 operates at a maximum frequency of 48 MHz using its Arm Cortex-M23 core. This speed is achievable with the high-speed on-chip oscillator (HOCO) or an external crystal up to 20 MHz multiplied via PLL. The MCU maintains full peripheral functionality-including ADC12 sampling and CTSU2 scanning-at this rate, with typical active current of 120 µA/MHz.
Does the R7FA2E1A73CNH#AA0 support capacitive touch sensing?
Yes, the R7FA2E1A73CNH#AA0 integrates the Capacitive Sensing Unit version 2 (CTSU2), supporting up to 11 touch electrodes in its 32-pin HWQFN package. It provides hardware-accelerated touch detection with automatic drift compensation, noise rejection, and <50 ms full-scan time - enabling reliable button/slider interfaces without external touch controller ICs.
What security features does the R7FA2E1A73CNH#AA0 include?
The R7FA2E1A73CNH#AA0 includes AES128/256 hardware encryption, a True Random Number Generator (TRNG), flash area protection, SRAM parity checking, and register write protection. These features support secure boot, encrypted firmware updates, and tamper-resistant data storage - meeting foundational requirements for PSA Level 1 and IEC 62443-3-3 compliance in edge devices.
What is the operating temperature range for the R7FA2E1A73CNH#AA0?
The R7FA2E1A73CNH#AA0 is qualified for industrial operation from -40°C to +105°C. This extended temperature range is validated across all specified electrical parameters, including flash endurance, ADC linearity, and CTSU2 sensitivity - making it suitable for under-hood automotive modules, factory-floor sensors, and enclosed HVAC systems.
How many GPIO pins does the R7FA2E1A73CNH#AA0 provide in its 32-pin HWQFN package?
The R7FA2E1A73CNH#AA0 in the 32-pin HWQFN package provides 23 general-purpose I/O pins, including 15 N-channel open-drain outputs, 3× 5-V tolerant inputs, and configurable pull-up resistors on all GPIOs. Pin functions are multiplexed via registers, and key interrupt (KINT) is supported on up to 4 pins for low-power wake-up from deep sleep modes.
R7FA2E1A73CNH#AA0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 32-WFQFN Exposed Pad
- 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:
- 23
- 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 10x12b SAR
- Oscillator Type:
- External, Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R7FA2E1A73CNH#AA0 FAQ
1.How can I place an order for R7FA2E1A73CNH#AA0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R7FA2E1A73CNH#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 R7FA2E1A73CNH#AA0 reliable?
The price and inventory of R7FA2E1A73CNH#AA0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R7FA2E1A73CNH#AA0 is usually 5 days.
3.What payment methods are accepted for R7FA2E1A73CNH#AA0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R7FA2E1A73CNH#AA0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R7FA2E1A73CNH#AA0?
R7FA2E1A73CNH#AA0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R7FA2E1A73CNH#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 R7FA2E1A73CNH#AA0?
For technical support, including R7FA2E1A73CNH#AA0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R7FA2E1A73CNH#AA0 requirements.
6.How does Aetrix verify that R7FA2E1A73CNH#AA0 is sourced from the original manufacturer or authorized distributors?
All R7FA2E1A73CNH#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 R7FA2E1A73CNH#AA0 meets industry standards.
7.What is the process for return or replacement of R7FA2E1A73CNH#AA0?
All R7FA2E1A73CNH#AA0 units undergo pre-shipment inspection (PSI). If there is an issue with R7FA2E1A73CNH#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 R7FA2E1A73CNH#AA0 part is unused and in its original packaging.
Return procedure for R7FA2E1A73CNH#AA0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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