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Renesas R7FA2E2A54CNK#AA1
- Part No.:
- R7FA2E2A54CNK#AA1
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
R7FA2E2A54CNK#AA1.pdf
- Description:
- IC MCU ARM 32K FLASH 24HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,031
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Product details
Overview
R7FA2E2A54CNK#AA1 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, 8-KB SRAM, 12-bit ADC and DAC, integrated CAN interface, and hardware security (AES128/256 + TRNG). It targets battery-powered industrial sensors and smart metering endpoints requiring functional safety support and extended temperature operation.
For engineers reviewing the R7FA2E2A54CNK#AA1 datasheet, R7FA2E2A54CNK#AA1 pinout, R7FA2E2A54CNK#AA1 application, or R7FA2E2A54CNK#AA1 equivalent, key selection criteria include its -40°C to +125°C operating range, 24-pin HWQFN package with 19 GPIOs (2 × 5-V tolerant), dual watchdog timers (WDT/IWDT), ECC-protected SRAM, and I3C/SPI/SCI communication flexibility for edge-node connectivity.
Technical Context
The R7FA2E2A54CNK#AA1 implements the Armv8-M architecture with Memory Protection Unit (MPU) supporting eight regions, enabling secure partitioning of firmware and data in resource-constrained systems. Its clock system integrates HOCO (48 MHz), MOCO (8 MHz), LOCO (32.768 kHz), and IWDT-dedicated 15-kHz oscillator - all with trim capability for precision timing across voltage and temperature.
Peripheral integration includes six 16-bit General PWM Timers (GPT16) with 12 PWM outputs, two low-power asynchronous AGTW timers, CAC for real-time clock accuracy monitoring, and Event Link Controller (ELC) enabling CPU-free peripheral chaining. The analog subsystem combines ADC12 (8-channel), DAC12, temperature sensor (TSN), and low-power comparators (ACMPLP) for closed-loop sensing without wake-up latency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M23 @ 48 MHz - energy-efficient ISA with TrustZone for secure boot and runtime isolation |
| Memory | 32-KB code flash + 2-KB data flash (100k P/E cycles) + 8-KB SRAM with ECC - supports field firmware updates and robust data logging |
| Analog | 12-bit ADC12 (8 channels), 12-bit DAC12, on-die TSN - enables high-fidelity sensor signal acquisition and analog output control |
| Connectivity | CAN module, I3C × 1, SPI × 1, SCI × 1 (UART/I²C/SPI/Smart Card) - provides mixed-protocol interoperability in industrial networks |
| Power & Temp | 1.6–5.5 V supply, -40°C to +125°C operation, low-power modes with ELC-triggered wake-up - suitable for unregulated battery and harsh-environment deployments |
| Security | AES128/256 acceleration, TRNG, register write protection, illegal memory access detection - meets IEC 61508 SIL2 and ISO 26262 ASIL-B readiness requirements |
| Package | 24-pin HWQFN (4 mm × 4 mm, 0.5 mm pitch), exposed die pad - compact footprint with thermal performance for sealed enclosures |
Pinout & Package
Package: 24-pin HWQFN (4 mm × 4 mm, 0.5 mm pitch), exposed die pad recommended to connect to VSS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply / Ground | Primary digital power domain; decoupling requires 0.1-µF capacitor per VCC–VSS pair placed adjacent to pins |
| VREFH0 / VREFL0 | Analog reference supply | Independent 1.6–5.5 V reference inputs for ADC12 - enables ratiometric measurements unaffected by VCC variation |
| SWDIO / SWCLK | Debug interface | 2-pin Serial Wire Debug - supports full-speed programming, real-time trace, and non-intrusive breakpoints during operation |
| RES# / MD | Reset / Mode control | Active-low reset with internal pull-up; MD pin selects single-chip vs. SCI boot mode at power-on |
| GTIOCnA/B | PWM I/O | 12 configurable GPT16 output compare pins - support complementary PWM generation with dead-time insertion for BLDC motor drives |
| AN005–AN022 | Analog inputs | 8 dedicated ADC12 input channels including AN019–AN022 and AN005/006/009/010 - routed to internal TSN and reference buffers |
| CAN_TX / CAN_RX | CAN physical layer | Dedicated differential CAN transceiver interface - compliant with ISO 11898-1, supports bit rates up to 1 Mbps |
Key Features
| Feature | Design Value |
|---|---|
| Arm MPU with 8 regions | Enables hardware-enforced memory isolation between application, bootloader, and secure services - critical for certified safety firmware |
| Event Link Controller (ELC) | Allows direct peripheral-to-peripheral triggering (e.g., ADC conversion completion → DMA transfer) without CPU involvement - reduces active time and power |
| Low-power AGTW timers | Two independent 32-bit asynchronous timers running from LOCO (32.768 kHz) - sustain accurate timekeeping in deep-sleep modes down to 1.6 V |
| Clock Frequency Accuracy Measurement (CAC) | Measures HOCO/MOCO/LOCO drift against reference clock and generates interrupt on deviation - enables self-calibration and fail-safe clock monitoring |
| Capacitive Touch Sensing Unit (CTSU2) | Hardware-accelerated touch sensing on up to 28 electrodes - operates concurrently with CPU sleep, eliminating polling overhead for HMI interfaces |
| Data Operation Circuit (DOC) | 16-bit compare/add/subtract engine with interrupt on match - offloads arithmetic from CPU for sensor fusion or PID loop calculations |
Applications
| Industrial Sensor Node | Smart Energy Meter |
|---|---|
|
Use Scenario: Battery-powered temperature/humidity/pressure sensor deployed in remote substations or pipeline monitoring points. IC Role / Device Role / Timing Role: Main controller executing sensor acquisition, local data preprocessing, CAN-based telemetry transmission, and secure OTA update handling. Use Value: 125°C rating ensures reliability in outdoor enclosures; ECC SRAM prevents data corruption during voltage dips; CAC validates clock integrity for timestamp-critical logging. |
Use Scenario: DIN-rail mounted electricity meter with tamper detection, tariff switching, and PLC/CAN backhaul. IC Role / Device Role / Timing Role: System-on-chip managing metrology ADC interface, real-time clock (RTC), secure billing storage, and communication stack. Use Value: Integrated AES/TRNG enables encrypted firmware and consumption data; 2-KB data flash supports 10-year load profile storage; IWDT guarantees recovery from brown-out faults. |
| BLDC Motor Control Module | IoT Edge Gateway |
|
Use Scenario: Compact fan/pump driver board with Hall-effect feedback, current sensing, and thermal shutdown. IC Role / Device Role / Timing Role: Real-time motor commutation controller using GPT16 PWM outputs, AGTW for precise timing, and ADC12 for phase current sampling. Use Value: Six GPT16 timers deliver 12-channel complementary PWM with programmable dead time; 5-V tolerant GPIOs interface directly with legacy Hall sensors; low-voltage detection (LVD) triggers safe shutdown below 1.6 V. |
Use Scenario: Wireless gateway aggregating Zigbee/Z-Wave sub-devices and forwarding data via CAN or cellular modem. IC Role / Device Role / Timing Role: Protocol bridge and security co-processor handling TLS handshake offload, secure key storage, and event-driven packet routing. Use Value: I3C interface connects to low-power sensors with <100 µA standby; DTC enables zero-CPU packet buffering; register write protection prevents accidental overwrite of crypto keys. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R7FA2E2A74CNK#AA1 | 64-KB flash (vs. 32 KB), same package/temp grade - no change to PCB layout or pinout | Supports larger RTOS images and dual-bank firmware updates; higher memory headroom for future feature expansion | Select when firmware size exceeds 32 KB or long-term scalability is required without hardware revision |
| R7FA2E1A54CNK#AA1 | RA2E1 series: Cortex-M23 core, 32-KB flash, but lacks CAN, I3C, and TSN - identical 24-pin HWQFN package | Suitable for cost-sensitive sensor nodes where CAN/I3C are unused; lower BOM cost but reduced protocol flexibility | Choose if CAN bus connectivity and advanced timing features (CAC, AGTW) are unnecessary and bill-of-materials cost is primary |
Compared with R7FA2E2A54CNK#AA1, the R7FA2E2A74CNK#AA1 offers double flash capacity without altering pin compatibility or thermal design, while the R7FA2E1A54CNK#AA1 removes CAN/I3C to reduce unit cost - making it viable only where those interfaces remain unused in the final system architecture.
Availability
R7FA2E2A54CNK#AA1 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart energy meters, BLDC motor controllers, and IoT edge gateways requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for R7FA2E2A54CNK#AA1 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 over 40 years of MCU innovation and automotive-grade quality systems.
The RA2E2 Group is designed specifically for ultra-low-power, cost-sensitive industrial and consumer edge devices requiring functional safety, security, and extended temperature operation - balancing performance, energy efficiency, and certification readiness.
FAQ
What is the maximum operating frequency and core architecture of the R7FA2E2A54CNK#AA1?
The R7FA2E2A54CNK#AA1 features an Arm Cortex-M23 core operating at up to 48 MHz, based on the Armv8-M architecture with TrustZone security extensions. It includes an 8-region Memory Protection Unit (MPU), single-cycle integer multiplier, and 19-cycle divider - optimized for deterministic real-time execution in safety-critical applications.
Does the R7FA2E2A54CNK#AA1 support CAN communication, and what are its electrical specifications?
Yes, the R7FA2E2A54CNK#AA1 integrates a full CAN 2.0B-compliant controller with dedicated CAN_TX and CAN_RX pins. It supports bit rates up to 1 Mbps and operates across the full -40°C to +125°C temperature range. External transceiver selection determines physical layer compliance (e.g., ISO 11898-2).
What package type and pin count does the R7FA2E2A54CNK#AA1 use, and is it pin-compatible with other RA2E2 variants?
The R7FA2E2A54CNK#AA1 uses a 24-pin HWQFN package (4 mm × 4 mm, 0.5 mm pitch) with an exposed die pad. It is pin-compatible with other RA2E2 devices in the same NK package variant (e.g., R7FA2E2A74CNK#AA1), sharing identical pin assignments, power domains, and peripheral mappings - enabling scalable memory upgrades without PCB redesign.
How does the R7FA2E2A54CNK#AA1 implement functional safety features for industrial applications?
The R7FA2E2A54CNK#AA1 includes multiple hardware safety mechanisms: ECC on SRAM, flash area protection, ADC self-diagnosis, Clock Frequency Accuracy Measurement (CAC), independent watchdog timer (IWDT), GPIO readback level detection, and illegal memory access detection - collectively supporting IEC 61508 SIL2 development workflows.
What analog peripherals are integrated into the R7FA2E2A54CNK#AA1, and how are they configured?
The R7FA2E2A54CNK#AA1 integrates a 12-bit ADC12 with 8 selectable input channels (including AN005, AN006, AN009, AN010, AN019–AN022), a 12-bit DAC12, on-die temperature sensor (TSN), and two low-power analog comparators (ACMPLP0/1). All analog functions share dedicated VREFH0/VREFL0 and VCC0/VSS0 power domains for noise isolation and ratiometric accuracy.
R7FA2E2A54CNK#AA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 24-WFQFN Exposed Pad
- Series:
- RA2E2
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M23
- Core Size:
- 32-Bit
- Speed:
- 48MHz
- Connectivity:
- I2C, SPI, UART/USART
- Peripherals:
- DMA, LVD, POR, PWM, WDT
- Number of I/O:
- 20
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 2K x 8
- RAM Size:
- 8K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.6V ~ 5.5V
- Data Converters:
- A/D 8x12b SAR
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R7FA2E2A54CNK#AA1 FAQ
1.How can I place an order for R7FA2E2A54CNK#AA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for R7FA2E2A54CNK#AA1 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 R7FA2E2A54CNK#AA1 reliable?
The price and inventory of R7FA2E2A54CNK#AA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R7FA2E2A54CNK#AA1 is usually 5 days.
3.What payment methods are accepted for R7FA2E2A54CNK#AA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R7FA2E2A54CNK#AA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R7FA2E2A54CNK#AA1?
R7FA2E2A54CNK#AA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R7FA2E2A54CNK#AA1 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 R7FA2E2A54CNK#AA1?
For technical support, including R7FA2E2A54CNK#AA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R7FA2E2A54CNK#AA1 requirements.
6.How does Aetrix verify that R7FA2E2A54CNK#AA1 is sourced from the original manufacturer or authorized distributors?
All R7FA2E2A54CNK#AA1 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 R7FA2E2A54CNK#AA1 meets industry standards.
7.What is the process for return or replacement of R7FA2E2A54CNK#AA1?
All R7FA2E2A54CNK#AA1 units undergo pre-shipment inspection (PSI). If there is an issue with R7FA2E2A54CNK#AA1, 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 R7FA2E2A54CNK#AA1 part is unused and in its original packaging.
Return procedure for R7FA2E2A54CNK#AA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R7FA2E2A54CNK#AA1 Tags
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