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Renesas R7FA2E1A72DNH#AA0
- Part No.:
- R7FA2E1A72DNH#AA0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
R7FA2E1A72DNH#AA0.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 32HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,020
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Product details
Overview
R7FA2E1A72DNH#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 (ADC12), Capacitive Sensing Unit (CTSU2), and integrated security with AES128/256 and TRNG - deployed in battery-powered HMI, sensor nodes, and industrial control interfaces.
For engineers reviewing the R7FA2E1A72DNH#AA0 datasheet, R7FA2E1A72DNH#AA0 pinout, R7FA2E1A72DNH#AA0 application, or R7FA2E1A72DNH#AA0 equivalent, key selection criteria include its 32-pin HWQFN package, -40°C to +85°C industrial temperature grade, CTSU2-based touch interface support, low-power AGT timers, and dual watchdog (WDT/IWDT) for functional safety-critical firmware.
Technical Context
The R7FA2E1A72DNH#AA0 implements the Armv8-M architecture with Memory Protection Unit (MPU) supporting eight regions, enabling secure partitioning of firmware tasks. Its clock system integrates HOCO (48 MHz), LOCO (32.768 kHz), and SOSC for RTC, with Clock Frequency Accuracy Measurement Circuit (CAC) for oscillator calibration.
It features four Serial Communications Interfaces (SCI) supporting UART, SPI, I²C, and smart card modes; one dedicated I²C bus interface; one SPI channel; and analog peripherals including two low-power comparators (ACMPLP), temperature sensor (TSN), and 13-channel ADC12 with internal reference and VREFH/VREFL pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M23, 48 MHz max - enables real-time deterministic execution with TrustZone-M for secure boot and peripheral isolation. |
| Memory | 64 KB code flash / 4 KB data flash / 16 KB SRAM with parity - supports firmware updates, parameter storage, and robust runtime data integrity. |
| Analog | 12-bit ADC12 (13 channels), 2× ACMPLP, TSN - delivers precision sensing for environmental monitoring and motor feedback without external signal conditioning. |
| Timers | GPT32 ×1, GPT16 ×6, AGT ×2, RTC, WDT/IWDT - provides flexible PWM generation, low-power event timing, calendar functions, and fail-safe reset capability. |
| Connectivity | SCI ×4 (UART/SPI/I²C/smart card), IIC ×1, SPI ×1 - enables multi-protocol communication with displays, sensors, and host controllers in compact embedded systems. |
| HMI & Safety | CTSU2 (11 touch channels), CAC, CRC, DOC, MPU, register write protection - enables robust capacitive touch UIs and ISO 26262/IEC 61508-aligned diagnostics. |
| Package & Temp | 32-pin HWQFN (5 mm × 5 mm, 0.5 mm pitch), -40°C to +85°C - suitable for space-constrained industrial and consumer applications requiring thermal reliability. |
Pinout & Package
Package: 32-pin HWQFN (5 mm × 5 mm, 0.5 mm pitch), exposed die pad recommended to be connected to VSS or left floating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply / Ground | Dual VCC pins (pins 1, 16) and dual VSS pins (pins 8, 24) enable low-noise power distribution and improved EMI resilience. |
| P000–P015, P100–P113, etc. | General-purpose I/O | 23 programmable I/O pins with 5-V tolerance on 3 pins, N-ch open-drain outputs on 15 pins, and configurable pull-up resistors. |
| SWDIO / SWCLK | Debug interface | Two-pin Serial Wire Debug (SW-DP) enables in-circuit 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 - critical for RTC accuracy and low-power sleep mode stability. |
| AN000–AN010, AN017–AN022 | ADC input | 11 dedicated analog input pins mapped to ADC12 - allows simultaneous sampling across multiple sensors with internal reference options. |
| TS00, TS02–TS07, etc. | Capacitive touch | 11 CTSU2 touch pins (e.g., TS00, TS02–TS07, TS17, TS18, TS21–TS25) enable direct connection to overlay electrodes for button/slider UIs. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | Multiple low-power modes (SNOOZE, DEEP, STOP) with AGT wake-up from 15 kHz IWDT clock - extends battery life in coin-cell-powered devices beyond 5 years. |
| Capacitive touch interface | CTSU2 supports 11 touch channels with noise immunity algorithms and automatic drift compensation - eliminates need for external touch controller ICs. |
| Hardware security engine | AES128/256 acceleration and True Random Number Generator (TRNG) enable secure firmware signing, encrypted storage, and TLS handshake offload. |
| Functional safety support | SRAM parity checking, flash area protection, ADC self-diagnosis, CAC, and independent watchdog (IWDT) meet requirements for IEC 61508 SIL2 subsystem compliance. |
| Flexible clock management | Five clock sources (HOCO/MOCO/LOCO/SOSC/MOSC) with trim function and clock-out capability - simplifies board-level clock tree design and reduces BOM count. |
Applications
| Smart Home Touch Panel | Industrial Sensor Node |
|---|---|
Use Scenario: Wall-mounted thermostat with capacitive touch buttons and ambient temperature/humidity sensing. IC Role / Device Role / Timing Role: Main application MCU handling touch decoding, sensor ADC reads, display SPI interface, and BLE co-processor communication via SCI UART. Use Value: CTSU2 enables reliable touch detection through glass overlays; 12-bit ADC12 and TSN provide ±0.5°C temperature accuracy without calibration; low-power AGT timers extend battery life to >3 years on CR2032. | Use Scenario: Wireless vibration/temperature monitor mounted on HVAC motors in factory environments. IC Role / Device Role / Timing Role: Edge-sensing node performing analog acquisition, FFT preprocessing via DTC-assisted transfers, and time-stamped event reporting over RS-485 (SCI). Use Value: Dual watchdog (WDT + IWDT) ensures recovery from lockup during field deployment; CRC calculator validates sensor data integrity; -40°C to +85°C rating guarantees operation in unconditioned machinery enclosures. |
| Medical Wearable Monitor | Energy Meter Interface Module |
Use Scenario: Disposable pulse oximeter with optical sensor front-end and Bluetooth LE connectivity. IC Role / Device Role / Timing Role: Signal acquisition MCU driving LED drivers via GPT PWM, digitizing photodiode output via ADC12, and managing BLE HCI over SCI UART. Use Value: Low-power ACMPLP comparators detect LED saturation thresholds; TRNG seeds BLE pairing keys; 16 KB SRAM buffers waveform data before transmission. | Use Scenario: DIN-rail mounted electricity meter add-on module for tamper detection and load profiling. IC Role / Device Role / Timing Role: Secure metering companion MCU reading shunt voltage/current via ADC12, validating energy calculations with DOC/CRC, and communicating via isolated I²C to main meter SoC. Use Value: AES encryption protects firmware updates; register write protection prevents accidental corruption of calibration constants; RTC maintains accurate billing timestamps across power cycles. |
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, peripherals; differs only in package (32-pin LQFP, 0.8 mm pitch) and thermal grade (-40°C to +85°C). | LQFP offers easier hand-soldering and rework; HWQFN provides smaller footprint and better thermal performance in automated assembly. | Select R7FA2E1A72DNH#AA0 for space-constrained PCBs requiring 5 mm × 5 mm footprint and optimal thermal dissipation. |
| R7FA2E1A92DNH#AA0 | Identical package and pinout; upgrades code flash from 64 KB to 128 KB while retaining same SRAM, ADC, CTSU2, and security features. | Suitable for applications needing larger firmware image size (e.g., OTA update partitions, RTOS with networking stack, or expanded touch gesture libraries). | Choose R7FA2E1A92DNH#AA0 when future firmware scalability or feature expansion is required without changing hardware layout. |
Compared with R7FA2E1A72DFJ#AA0 and R7FA2E1A92DNH#AA0, the R7FA2E1A72DNH#AA0 balances compact packaging, industrial temperature range, and sufficient memory for cost-sensitive HMI and sensor edge nodes - making it optimal for production designs where footprint and thermal profile are prioritized over maximum flash headroom or manual assembly convenience.
Availability
R7FA2E1A72DNH#AA0 is available at Aetrix Electronics and suitable for smart home controls, industrial sensor nodes, medical wearables, and energy meter interfaces requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for R7FA2E1A72DNH#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 deep expertise in microcontrollers, analog, and power management.
The RA2E1 Group - including the R7FA2E1A72DNH#AA0 - was designed specifically for ultra-low-power, cost-optimized general-purpose applications demanding robust HMI, analog sensing, and security in compact packages.
FAQ
What is the maximum operating frequency of the R7FA2E1A72DNH#AA0?
The R7FA2E1A72DNH#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 external crystal sources. The MCU maintains full peripheral functionality-including ADC12 sampling, CTSU2 scanning, and SCI communication-at this clock rate, enabling responsive real-time control in battery-powered applications.
Does the R7FA2E1A72DNH#AA0 support capacitive touch sensing?
Yes, the R7FA2E1A72DNH#AA0 integrates the Capacitive Sensing Unit version 2 (CTSU2), supporting up to 11 touch channels. It includes built-in noise cancellation, auto-calibration, and drift compensation algorithms. The device uses dedicated pins such as TS00, TS02–TS07, TS17, TS18, and TS21–TS25, allowing direct electrode connection without external components for buttons, sliders, or proximity detection.
What package type and dimensions does the R7FA2E1A72DNH#AA0 use?
The R7FA2E1A72DNH#AA0 is housed in a 32-pin HWQFN package measuring 5 mm × 5 mm with 0.5 mm pitch and an exposed thermal pad. This package is optimized for automated surface-mount assembly and thermal performance in space-constrained designs. Pin assignments match the standard RA2E1 32-pin QFN layout, ensuring compatibility with existing layout footprints and reflow profiles.
How much flash and RAM memory does the R7FA2E1A72DNH#AA0 include?
The R7FA2E1A72DNH#AA0 includes 64 KB of code flash memory, 4 KB of data flash memory (rated for 100,000 program/erase cycles), and 16 KB of SRAM with parity error detection. This memory configuration supports secure firmware updates, persistent parameter storage, and real-time data buffering - ideal for applications requiring field-upgradable code and robust runtime data integrity.
What security features are implemented in the R7FA2E1A72DNH#AA0?
The R7FA2E1A72DNH#AA0 integrates AES128/256 cryptographic acceleration, a True Random Number Generator (TRNG), Flash Area Protection, Register Write Protection, SRAM Parity Checking, and Clock Frequency Accuracy Measurement (CAC). These features collectively support secure boot, encrypted communication, tamper-resistant storage, and functional safety diagnostics - meeting foundational requirements for PSA Level 1 and IEC 61508 compliance.
R7FA2E1A72DNH#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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R7FA2E1A72DNH#AA0 FAQ
1.How can I place an order for R7FA2E1A72DNH#AA0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R7FA2E1A72DNH#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 R7FA2E1A72DNH#AA0 reliable?
The price and inventory of R7FA2E1A72DNH#AA0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R7FA2E1A72DNH#AA0 is usually 5 days.
3.What payment methods are accepted for R7FA2E1A72DNH#AA0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R7FA2E1A72DNH#AA0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R7FA2E1A72DNH#AA0?
R7FA2E1A72DNH#AA0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R7FA2E1A72DNH#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 R7FA2E1A72DNH#AA0?
For technical support, including R7FA2E1A72DNH#AA0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R7FA2E1A72DNH#AA0 requirements.
6.How does Aetrix verify that R7FA2E1A72DNH#AA0 is sourced from the original manufacturer or authorized distributors?
All R7FA2E1A72DNH#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 R7FA2E1A72DNH#AA0 meets industry standards.
7.What is the process for return or replacement of R7FA2E1A72DNH#AA0?
All R7FA2E1A72DNH#AA0 units undergo pre-shipment inspection (PSI). If there is an issue with R7FA2E1A72DNH#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 R7FA2E1A72DNH#AA0 part is unused and in its original packaging.
Return procedure for R7FA2E1A72DNH#AA0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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