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Renesas R7FA2E1A52DNE#AA0
- Part No.:
- R7FA2E1A52DNE#AA0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 48-WFQFN Exposed Pad
- Datasheet:
-
R7FA2E1A52DNE#AA0.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 48HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:900
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Product details
Overview
R7FA2E1A52DNE#AA0 from Renesas is an ultra-low-power 32-bit Arm® Cortex®-M23 microcontroller operating at up to 48 MHz, featuring 32-KB code flash, 16-KB SRAM, a 12-bit ADC, capacitive touch sensing (CTSU2), and integrated AES/ TRNG security. It targets battery-powered HMI, sensor nodes, and industrial control where low active/standby current, robust safety features, and secure firmware updates are critical.
For engineers reviewing the R7FA2E1A52DNE#AA0 datasheet, R7FA2E1A52DNE#AA0 pinout, R7FA2E1A52DNE#AA0 application, or R7FA2E1A52DNE#AA0 equivalent, key selection criteria include its 48-pin HWQFN package with 37 I/O pins, -40°C to +85°C industrial temperature grade, CTSU2-based touch interface support, and dual watchdog timers (WDT/IWDT) for functional safety compliance.
Technical Context
The R7FA2E1A52DNE#AA0 implements the Armv8-M architecture with Memory Protection Unit (MPU) and CoreSight™ debug infrastructure, enabling secure, scalable embedded firmware development. Its clock system integrates multiple on-chip oscillators (HOCO/MOCO/LOCO) plus external crystal support, with Clock Frequency Accuracy Measurement Circuit (CAC) for real-time oscillator calibration.
System-level features include Event Link Controller (ELC) for CPU-free peripheral triggering, Data Transfer Controller (DTC) for autonomous data movement, and Safety mechanisms such as SRAM parity checking, flash area protection, ADC self-diagnosis, and register write protection - all aligned with IEC 61508 SIL-2 readiness.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M23 @ 48 MHz max; supports TrustZone for secure partitioning of firmware and peripherals. |
| Memory | 32-KB code flash (100k P/E cycles), 4-KB data flash, 16-KB SRAM with parity; enables field-upgradable firmware and reliable data logging. |
| Analog Peripherals | 12-bit ADC12 with 13 input channels, 2× ACMPLP comparators, TSN temperature sensor; supports precision sensor signal acquisition and threshold monitoring. |
| Touch Interface | Capacitive Sensing Unit (CTSU2) with 20 touch channels; delivers robust, low-power proximity/touch detection without external components. |
| Security | AES128/256 encryption engine + True Random Number Generator (TRNG); provides hardware-accelerated secure boot and key derivation. |
| Power & Temp | 1.6–5.5 V operation, -40°C to +85°C industrial grade; supports wide-input battery and industrial power rails. |
| Package | 48-pin HWQFN (7 mm × 7 mm, 0.5 mm pitch), 37 GPIOs, 3× 5-V tolerant inputs; compact footprint ideal for space-constrained edge devices. |
Pinout & Package
Package: 48-pin HWQFN (7 mm × 7 mm, 0.5 mm pitch), exposed thermal pad recommended to connect to VSS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply / Ground | Dual VCC pins (pins 1, 48) and three VSS pins (pins 16, 32, 41) ensure stable core/analog power delivery and noise isolation. |
| P000–P015, P100–P112, P200–P215, P300–P302, P400–P411, P500–P502, P913–P915 | General-purpose I/O | 37 configurable GPIOs with pull-up, open-drain, and 5-V tolerance on select pins; supports flexible peripheral mapping and level-shifting interfaces. |
| SWDIO / SWCLK | Debug interface | Two-pin Serial Wire Debug (SWD) port enables non-intrusive programming, real-time tracing, and secure firmware validation. |
| XTAL / EXTAL / XCIN / XCOUT | Crystal oscillator interface | Supports external 1–20 MHz main crystal and 32.768 kHz sub-crystal; enables precise timing for RTC and communication baud rates. |
| AVCC0 / AVSS0 / VREFH0 / VREFL0 | Analog power & reference | Dedicated analog supply and reference pins isolate sensitive ADC/CTSU circuitry from digital noise for <1 LSB INL performance. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | Typical active current of 82 µA/MHz and standby current of 0.25 µA with RTC enabled - extends battery life in coin-cell applications. |
| Capacitive Touch (CTSU2) | 20-channel touch sensing with automatic drift compensation and noise immunity; eliminates need for external touch controllers in HMI designs. |
| Functional Safety Support | Built-in CAC, CRC calculator, DOC, IWDT, and SRAM parity enable systematic fault detection per IEC 61508 requirements. |
| Flexible Clock Architecture | Five internal oscillators (HOCO/MOCO/LOCO/SOSC/IWDT-OSC) plus external crystal support allow dynamic clock switching and fail-safe fallback. |
| Secure Firmware Lifecycle | AES engine + TRNG + flash protection registers enable encrypted OTA updates, secure key storage, and anti-rollback enforcement. |
Applications
| Smart Home Thermostat | 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 system controller managing touch UI, ADC sampling, RTC-scheduled wake-ups, and SPI/I2C peripheral interfacing. Use Value: CTSU2 enables seamless glass-front touch interface; 32-KB flash accommodates BLE stack + application logic; low standby current extends battery life to >2 years. | Use Scenario: Battery-powered vibration/temperature monitor deployed in factory machinery with periodic LoRaWAN telemetry uploads. IC Role / Device Role / Timing Role: Edge intelligence node performing sensor fusion, event-triggered sampling, and secure data packaging before transmission. Use Value: Dual watchdogs (WDT/IWDT) ensure recovery from brown-out or firmware hang; AES/TRNG secures sensor payload encryption; AGT timers enable precise sleep/wake scheduling. |
| Medical Wearable | Energy Meter Interface |
Use Scenario: Portable pulse oximeter with optical sensor array, OLED display, and USB-C charging interface. IC Role / Device Role / Timing Role: Central MCU handling analog front-end control, touch navigation, power management, and USB device enumeration. Use Value: 12-bit ADC with internal reference achieves <±1% gain error for photodiode signal digitization; 16-KB SRAM buffers waveform data prior to compression. | Use Scenario: DIN-rail mounted electricity meter with tamper detection, tariff switching, and RS-485 communication to utility head-end systems. IC Role / Device Role / Timing Role: Secure metering co-processor managing real-time clock, tamper inputs, secure log storage, and isolated UART communication. Use Value: Flash area protection prevents unauthorized firmware modification; LVD0/LVD1/LVD2 monitors supply integrity across multiple voltage thresholds; RTC maintains accurate billing time during mains outage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R7FA2E1A52DFL#AA0 | LQFP-48 package (7 mm × 7 mm, 0.5 mm pitch), same memory/peripherals but different mechanical form factor and thermal characteristics. | Suitable for through-hole prototyping or legacy PCB layouts requiring LQFP; less suitable for high-density SMT assembly. | Select when board layout requires exposed-pad thermal relief or reflow compatibility with QFN-specific stencil profiles. |
| R7FA2E1A72DNE#AA0 | 64-KB code flash, identical package, peripherals, and speed; adds 32 KB more program storage for larger RTOS or protocol stacks. | Required for applications needing Bluetooth LE stack + custom application logic, or dual-firmware A/B update schemes. | Choose when firmware size exceeds 32 KB or future scalability for feature expansion is mandatory. |
Compared with R7FA2E1A52DNE#AA0, the R7FA2E1A52DFL#AA0 offers identical electrical functionality in a leaded package for easier debugging and hand-soldering, while R7FA2E1A72DNE#AA0 provides double the flash capacity for complex connectivity stacks - both retain full pin and software compatibility within the RA2E1 family.
Availability
R7FA2E1A52DNE#AA0 is available at Aetrix Electronics and suitable for smart home thermostats, industrial sensor nodes, medical wearables, and energy meter interfaces requiring stable component supply, long-term lifecycle support, and guaranteed traceability.
Supply support for R7FA2E1A52DNE#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 is designed specifically for cost-sensitive, ultra-low-power general-purpose applications - emphasizing energy efficiency, security, and ease of use across consumer, industrial, and healthcare end equipment.
FAQ
What is the maximum operating frequency of the R7FA2E1A52DNE#AA0?
The R7FA2E1A52DNE#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, and is fully supported across its entire industrial temperature range (-40°C to +85°C). The R7FA2E1A52DNE#AA0 maintains timing compliance under worst-case voltage (1.6 V) and temperature conditions per its datasheet specifications.
Does the R7FA2E1A52DNE#AA0 support capacitive touch sensing?
Yes, the R7FA2E1A52DNE#AA0 integrates the Capacitive Sensing Unit version 2 (CTSU2), supporting up to 20 touch channels. It includes built-in noise cancellation, auto-calibration, and low-power scanning modes - eliminating external touch controller ICs. The R7FA2E1A52DNE#AA0's CTSU2 is validated for glass-over-metal and plastic overlay implementations in production-grade HMI designs.
What security features are implemented in hardware on the R7FA2E1A52DNE#AA0?
The R7FA2E1A52DNE#AA0 includes AES128/256 encryption acceleration, a True Random Number Generator (TRNG), flash area protection registers, SRAM parity checking, and register write protection. These features enable secure boot, encrypted firmware updates, and runtime integrity checks - all without software overhead. The R7FA2E1A52DNE#AA0's security block is architecturally isolated from general-purpose peripherals per Arm TrustZone guidelines.
What is the pin count and package type of the R7FA2E1A52DNE#AA0?
The R7FA2E1A52DNE#AA0 uses a 48-pin HWQFN package measuring 7 mm × 7 mm with 0.5 mm pitch and an exposed thermal pad. It provides 37 general-purpose I/O pins, including 3× 5-V tolerant inputs, and supports standard reflow soldering profiles. The R7FA2E1A52DNE#AA0's pinout is fully documented in Figure 1.5 of the R01DS0386EJ0170 datasheet.
How does the R7FA2E1A52DNE#AA0 handle functional safety requirements?
The R7FA2E1A52DNE#AA0 incorporates multiple hardware safety mechanisms: independent watchdog timer (IWDT) with dedicated oscillator, Clock Frequency Accuracy Measurement Circuit (CAC), CRC calculator, Data Operation Circuit (DOC), SRAM parity, and flash protection. These features collectively support systematic fault detection required by IEC 61508 SIL-2 and ISO 13849 PL e. The R7FA2E1A52DNE#AA0's safety architecture is validated in Renesas' Functional Safety Manual R01UM0029EJ0100.
R7FA2E1A52DNE#AA0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 48-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:
- 37
- Program Memory Size:
- 32KB (32K 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R7FA2E1A52DNE#AA0 FAQ
1.How can I place an order for R7FA2E1A52DNE#AA0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R7FA2E1A52DNE#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 R7FA2E1A52DNE#AA0 reliable?
The price and inventory of R7FA2E1A52DNE#AA0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R7FA2E1A52DNE#AA0 is usually 5 days.
3.What payment methods are accepted for R7FA2E1A52DNE#AA0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R7FA2E1A52DNE#AA0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R7FA2E1A52DNE#AA0?
R7FA2E1A52DNE#AA0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R7FA2E1A52DNE#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 R7FA2E1A52DNE#AA0?
For technical support, including R7FA2E1A52DNE#AA0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R7FA2E1A52DNE#AA0 requirements.
6.How does Aetrix verify that R7FA2E1A52DNE#AA0 is sourced from the original manufacturer or authorized distributors?
All R7FA2E1A52DNE#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 R7FA2E1A52DNE#AA0 meets industry standards.
7.What is the process for return or replacement of R7FA2E1A52DNE#AA0?
All R7FA2E1A52DNE#AA0 units undergo pre-shipment inspection (PSI). If there is an issue with R7FA2E1A52DNE#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 R7FA2E1A52DNE#AA0 part is unused and in its original packaging.
Return procedure for R7FA2E1A52DNE#AA0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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