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Renesas R7FA2E1A52DNH#AA0
- Part No.:
- R7FA2E1A52DNH#AA0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
R7FA2E1A52DNH#AA0.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 32HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,155
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Product details
Overview
R7FA2E1A52DNH#AA0 from Renesas Electronics 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 security (AES128/256, TRNG). It targets battery-powered HMI, sensor nodes, and industrial control where power efficiency, touch interface, and functional safety are critical.
For engineers reviewing the R7FA2E1A52DNH#AA0 datasheet, R7FA2E1A52DNH#AA0 pinout, R7FA2E1A52DNH#AA0 application, or R7FA2E1A52DNH#AA0 equivalent, key selection factors include its 32-pin HWQFN package (5 mm × 5 mm, 0.5 mm pitch), -40°C to +85°C industrial temperature grade, 23 GPIOs with 5-V tolerance, and support for CTSU2-based touch buttons/sliders in space-constrained designs.
Technical Context
The R7FA2E1A52DNH#AA0 implements the Armv8-M architecture with Memory Protection Unit (MPU) and CoreSight™ debug infrastructure (SW-DP, MTB-M23), enabling secure, scalable firmware development. Its clock system integrates multiple oscillators - HOCO (48 MHz), LOCO (32.768 kHz), and external XTAL/EXTAL - with Clock Frequency Accuracy Measurement (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 memory transfers, and dual watchdog timers (WDT + IWDT) with independent clock sources for fail-safe operation. Safety functions include SRAM parity checking, flash area protection, ADC self-diagnosis, and register write protection.
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 robust firmware updates and data logging. |
| Analog Peripherals | 12-bit ADC12 (8 input channels), 2× ACMPLP comparators, on-die temperature sensor (TSN); supports sensor fusion and threshold monitoring. |
| Touch Interface | Capacitive Sensing Unit (CTSU2) with 11 touch pins; delivers noise-immune proximity/touch detection without external components. |
| Timers & PWM | GPT32 ×1, GPT16 ×6, AGT ×2, RTC, WDT/IWDT; supports motor control (BLDC via 3-phase PWM), real-time scheduling, and low-power wake-up. |
| I/O & Connectivity | 23 GPIOs (5-V tolerant, N-ch open-drain), SCI ×3, IIC ×1, SPI ×1, SWD debug; fits compact industrial HMI and sensor gateway designs. |
| Power & Safety | 1.6–5.5 V operation, low-power modes (LPM), LVD (3 thresholds), CAC, CRC, DOC, MPU; meets IEC 61508 SIL-2 functional safety requirements. |
Pinout & Package
Packaged in a 32-pin HWQFN (5 mm × 5 mm, 0.5 mm pitch) with exposed thermal pad recommended to be connected to VSS. Pin count and I/O allocation match the R7FA2E1A52DNH#AA0's 23 general-purpose I/Os, 3 input-only pins, and dedicated analog/power/debug signals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply / Ground | Dual VCC pins (pins 1, 16) and three VSS pins (pins 2, 15, 32) ensure stable core/analog power delivery and low-noise grounding. |
| P000–P015, P100–P113, etc. | General-purpose I/O | 23 configurable GPIOs (e.g., P000, P001, P100–P103, P110–P113, P200–P201, P207–P208, P300–P304, P400–P403, P407–P411, P500–P502, P913–P915); support pull-up, open-drain, and 5-V tolerance. |
| SWDIO / SWCLK | Debug interface | Serial Wire Debug pins (P108, P300) enable non-intrusive programming, real-time tracing, and breakpoint debugging. |
| XTAL / EXTAL / XCIN / XCOUT | Crystal oscillator interface | Supports external 1–20 MHz main crystal (XTAL/EXTAL) and 32.768 kHz sub-clock (XCIN/XCOUT) for precise timing and RTC operation. |
| AVCC0 / AVSS0 / VREFH0 / VREFL0 | Analog power & reference | Dedicated analog supply (AVCC0/AVSS0) and reference pins (VREFH0/VREFL0) isolate ADC noise and enable flexible reference selection (internal or external). |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | Active current as low as 64 µA/MHz; sleep modes down to 0.25 µA with RTC + AGT wake-up - extends battery life in portable devices. |
| Integrated capacitive touch | CTSU2 supports up to 11 touch electrodes with automatic noise cancellation and auto-tuning - eliminates need for external touch controllers in consumer HMI. |
| Hardware security engine | AES128/256 acceleration + True Random Number Generator (TRNG) enable secure boot, encrypted communication, and key generation without software overhead. |
| Functional safety support | Built-in CAC, CRC calculator, DOC, SRAM parity, and flash protection meet requirements for IEC 61508 and ISO 13849 compliance in industrial controls. |
| Flexible clock architecture | Multiple on-chip oscillators (HOCO/MOCO/LOCO) with trim function and external XTAL/EXTAL support - simplifies BOM and enables dynamic frequency scaling. |
Applications
| Smart Home Touch Panel | Industrial Sensor Node |
|---|---|
Use Scenario: Wall-mounted thermostat or lighting control panel with capacitive touch buttons and sliders. IC Role / Device Role / Timing Role: Main controller executing touch sensing (CTSU2), local UI logic, and wireless module interfacing (SCI/IIC). Use Value: Single-chip integration reduces BOM cost and PCB area; ultra-low active/sleep current enables multi-year battery life. | Use Scenario: Battery-powered environmental monitor measuring temperature, humidity, and air quality in factory settings. IC Role / Device Role / Timing Role: Sensor hub aggregating ADC readings, performing basic edge analytics, and waking periodically to transmit via UART or SPI to gateway. Use Value: On-die TSN and 12-bit ADC eliminate external sensors; LPM + AGT timer enables precise 10-second wake intervals with <1 µA average current. |
| Medical Wearable Device | Appliance Control Board |
Use Scenario: Portable pulse oximeter or glucose meter requiring low-power operation, biometric sensing, and secure data handling. IC Role / Device Role / Timing Role: System-on-chip managing optical sensor interface, signal conditioning, encryption (AES+TRNG), and USB/Bluetooth HCI. Use Value: Hardware-accelerated crypto ensures HIPAA-compliant data protection; CAC and CRC verify sensor integrity and firmware authenticity. | Use Scenario: Washing machine or HVAC control board needing reliable motor timing, fault detection, and user interface feedback. IC Role / Device Role / Timing Role: Real-time controller driving BLDC motors (via GPT32/GPT16 3-phase PWM), monitoring overcurrent (ACMPLP), and managing LED indicators. Use Value: Integrated POEG disables PWM outputs during faults; IWDT with independent clock guarantees safe shutdown on software lockup. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R7FA2E1A52DFJ#AA0 | Same RA2E1 group, identical specs, but in 32-pin LQFP (7 mm × 7 mm, 0.8 mm pitch) - larger footprint, no exposed thermal pad. | Preferred where manual soldering or legacy LQFP assembly is required; less suitable for high-density or thermally constrained layouts. | Select R7FA2E1A52DFJ#AA0 only when LQFP compatibility or reflow process constraints outweigh thermal performance needs. |
| R7FA2E1A52DNE#AA0 | Same RA2E1 group, identical specs, but in 48-pin HWQFN (7 mm × 7 mm, 0.5 mm pitch) - adds 14 extra GPIOs and SCI channel vs. R7FA2E1A52DNH#AA0. | Suitable for designs needing more serial interfaces or I/O expansion without changing firmware architecture due to pin compatibility within RA2E1 family. | Choose R7FA2E1A52DNE#AA0 when additional SCI/I/O headroom is required and PCB area permits larger QFN. |
Compared with R7FA2E1A52DFJ#AA0 and R7FA2E1A52DNE#AA0, the R7FA2E1A52DNH#AA0 offers the smallest 32-pin HWQFN footprint with optimal thermal performance for space-limited, battery-operated applications - balancing I/O count, power efficiency, and manufacturability.
Availability
R7FA2E1A52DNH#AA0 is available at Aetrix Electronics and suitable for smart home HMI, industrial sensor nodes, and medical wearables requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for R7FA2E1A52DNH#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 technologies.
The RA2E1 group - including the R7FA2E1A52DNH#AA0 - was designed specifically for cost-sensitive, ultra-low-power applications demanding rich analog integration, capacitive touch, and hardware security in compact packages.
FAQ
What is the maximum operating frequency of the R7FA2E1A52DNH#AA0?
The R7FA2E1A52DNH#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 (1–20 MHz) with PLL multiplication. The MCU maintains full peripheral functionality at this frequency, including real-time ADC sampling and CTSU2 touch scanning.
Does the R7FA2E1A52DNH#AA0 support capacitive touch sensing?
Yes, the R7FA2E1A52DNH#AA0 integrates the Capacitive Sensing Unit (CTSU2) supporting up to 11 touch electrodes. It provides built-in noise cancellation, auto-calibration, and low-power scan modes - enabling robust touch button, slider, and proximity detection without external ICs or firmware-intensive polling.
What package type and pin count does the R7FA2E1A52DNH#AA0 use?
The R7FA2E1A52DNH#AA0 uses a 32-pin HWQFN package measuring 5 mm × 5 mm with 0.5 mm pitch and an exposed thermal pad. This compact, thermally efficient package supports 23 GPIOs, 3 input-only pins, and all essential power/debug/analog interfaces required for space-constrained designs.
What security features are included in the R7FA2E1A52DNH#AA0?
The R7FA2E1A52DNH#AA0 includes AES128/256 hardware acceleration, a True Random Number Generator (TRNG), flash area protection, register write protection, and SRAM parity checking. These features collectively support secure boot, encrypted communication, and tamper-resistant firmware storage - meeting foundational requirements for IEC 62443 and Common Criteria EAL2.
Is the R7FA2E1A52DNH#AA0 compatible with Renesas' Flexible Software Package (FSP)?
Yes, the R7FA2E1A52DNH#AA0 is fully supported by Renesas' Flexible Software Package (FSP) v4.x and later. FSP provides HAL drivers, middleware (including CTSU2 touch library and FreeRTOS), security stacks (SSF), and example projects - accelerating development of certified, production-ready firmware for the R7FA2E1A52DNH#AA0.
R7FA2E1A52DNH#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:
- 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 10x12b SAR
- Oscillator Type:
- External, Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R7FA2E1A52DNH#AA0 FAQ
1.How can I place an order for R7FA2E1A52DNH#AA0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R7FA2E1A52DNH#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 R7FA2E1A52DNH#AA0 reliable?
The price and inventory of R7FA2E1A52DNH#AA0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R7FA2E1A52DNH#AA0 is usually 5 days.
3.What payment methods are accepted for R7FA2E1A52DNH#AA0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R7FA2E1A52DNH#AA0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R7FA2E1A52DNH#AA0?
R7FA2E1A52DNH#AA0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R7FA2E1A52DNH#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 R7FA2E1A52DNH#AA0?
For technical support, including R7FA2E1A52DNH#AA0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R7FA2E1A52DNH#AA0 requirements.
6.How does Aetrix verify that R7FA2E1A52DNH#AA0 is sourced from the original manufacturer or authorized distributors?
All R7FA2E1A52DNH#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 R7FA2E1A52DNH#AA0 meets industry standards.
7.What is the process for return or replacement of R7FA2E1A52DNH#AA0?
All R7FA2E1A52DNH#AA0 units undergo pre-shipment inspection (PSI). If there is an issue with R7FA2E1A52DNH#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 R7FA2E1A52DNH#AA0 part is unused and in its original packaging.
Return procedure for R7FA2E1A52DNH#AA0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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