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Renesas R7FA2E2A72DNJ#AA1
- Part No.:
- R7FA2E2A72DNJ#AA1
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 20-WFQFN Exposed Pad
- Datasheet:
-
R7FA2E2A72DNJ#AA1.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 20HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,643
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Product details
Overview
R7FA2E2A72DNJ#AA1 from Renesas Electronics is an ultra-low-power 32-bit Arm® Cortex®-M23 microcontroller operating at up to 48 MHz, featuring 64 KB code flash, 8 KB SRAM, 12-bit ADC and DAC, integrated CAN interface, and hardware security including AES-128/256 and TRNG. It targets battery-powered industrial sensors and smart metering endpoints requiring functional safety support and extended temperature operation.
For engineers reviewing the R7FA2E2A72DNJ#AA1 datasheet, R7FA2E2A72DNJ#AA1 pinout, R7FA2E2A72DNJ#AA1 application, or R7FA2E2A72DNJ#AA1 equivalent, key selection criteria include its -40°C to +85°C industrial temperature grade, 20-pin HWQFN (4 mm × 4 mm) package, dual watchdog timers (WDT/IWDT), ECC-protected SRAM, and I3C/SPI/SCI peripheral set with hardware event linking (ELC) for deterministic low-power operation.
Technical Context
The R7FA2E2A72DNJ#AA1 implements the Armv8-M architecture with Memory Protection Unit (MPU) supporting eight regions, enabling secure partitioning of firmware and data in resource-constrained embedded systems. Its clock system integrates HOCO (48 MHz), MOCO (8 MHz), LOCO (32.768 kHz), and IWDT-dedicated oscillator (15 kHz), all with trim capability for precision timing across voltage and temperature.
Peripheral integration includes a 12-bit ADC12 with eight input channels and internal temperature sensor (TSN), dual AGTW timers for asynchronous wake-up, six GPT16 modules supporting 12 PWM outputs and BLDC motor control, and a full suite of safety features: CAC for clock accuracy monitoring, CRC calculator, DOC for data integrity, and register write protection via PRCR.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M23, 48 MHz max - enables real-time deterministic execution with TrustZone-M isolation for secure boot and firmware updates. |
| Memory | 64 KB code flash + 2 KB data flash + 8 KB SRAM with ECC - supports field firmware upgrades and robust runtime data storage with error correction. |
| Analog | 12-bit ADC12 (8 ch) + 12-bit DAC12 + TSN - delivers precise sensor signal acquisition and closed-loop analog output control without external components. |
| Connectivity | CAN, I3C, SPI, SCI (UART/I²C/SPI/Smart Card) - provides interoperability with automotive, industrial, and IoT bus standards using minimal pin count. |
| Safety & Security | ECC SRAM, CAC, IWDT, CRC, DOC, AES-128/256, TRNG - meets IEC 61508 SIL-2 and ISO/SAE 21434 requirements for functional safety and cybersecurity. |
| Power & Temp | 1.6–5.5 V supply, -40°C to +85°C, 20-pin HWQFN - enables direct connection to 3.3 V or 5 V rails and reliable operation in harsh industrial environments. |
Pinout & Package
Package: 20-pin HWQFN (4 mm × 4 mm, 0.5 mm pitch), exposed die pad recommended to be connected to VSS or left open. Pin count and layout match Renesas' standardized RA2E2 footprint for drop-in compatibility within the group.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P400 | CACREF / AGTIO1 | Measurement reference clock input for Clock Accuracy Circuit; also serves as external event input for AGTW timer - enables self-calibration of system clocks against external references. |
| P401 | VCL | Internal LDO stabilization pin - requires 4.7 µF capacitor to VSS for stable core voltage regulation under dynamic load conditions. |
| P201/MD | Mode Control | Boot mode selection during reset - determines single-chip vs. SCI boot operation; must remain static after power-on to avoid unintended mode transitions. |
| P300/SWCLK | SWD Clock | Serial Wire Debug clock input - enables non-intrusive debugging and programming without halting real-time peripherals. |
| P108/SWDIO | SWD Data I/O | Serial Wire Debug bidirectional data line - supports full debug visibility including memory inspection and register trace via CoreSight MTB-M23. |
| P110 | SCI9 CTS/RTS / SS9 | Hardware flow control or SPI chip select - allows automatic UART handshaking or multi-slave SPI arbitration without CPU intervention. |
| P010/VREFH0 | ADC Reference High | Configurable analog reference voltage input (1.6–VCC) - sets full-scale range for 12-bit ADC conversions; tied to VCC when internal reference suffices. |
| P011/VREFL0 | ADC Reference Low | Analog ground reference for ADC - must be decoupled with 0.1 µF capacitor to VSS to minimize noise coupling into precision measurements. |
Key Features
| Feature | Design Value |
|---|---|
| Event Link Controller (ELC) | Direct hardware routing between 64+ peripheral events and 16 destinations - eliminates CPU polling overhead and reduces latency for time-critical responses like ADC-triggered PWM updates. |
| Data Transfer Controller (DTC) | Autonomous data movement on interrupt - moves ADC results to RAM or SPI TX buffers without CPU involvement, cutting active current by up to 40% in sensor read cycles. |
| Low-Power Asynchronous Timers (AGTW ×2) | Independent 32-bit counters running on LOCO (32.768 kHz) - provide sub-millisecond wake-up from deep sleep modes while consuming <1 µA total. |
| Capacitive Touch Sensing Unit (CTSU2) | Dedicated hardware for 32-channel touch detection - achieves <10 µA average current per button with built-in noise rejection, eliminating need for external touch controllers. |
| Security Accelerators | AES-128/256 engine + TRNG + memory protection - accelerates encrypted firmware updates and secure key generation in <100 µs per 128-bit block, meeting PSA Level 2 certification requirements. |
Applications
| Industrial Sensor Node | Smart Energy Meter |
|---|---|
Use Scenario: Battery-powered wireless temperature/humidity/pressure node deployed in factory automation or HVAC ducts. IC Role / Device Role / Timing Role: Main system controller executing sensor fusion, BLE/Wi-Fi stack, and secure OTA updates; uses AGTW timers for periodic wake-up and CAC to validate clock stability before radio transmission. Use Value: 1.8 µA deep-sleep current and 48 MHz burst processing enable >10-year battery life with daily telemetry uploads. | Use Scenario: DIN-rail mounted electricity meter with tamper detection, tariff switching, and PLC communication. IC Role / Device Role / Timing Role: System-on-chip managing metrology ADC sampling, CAN-based grid communication, and secure billing data storage; leverages ECC SRAM and AES to protect revenue-critical firmware. Use Value: Integrated 12-bit ADC with internal TSN and reference buffers eliminates external signal conditioning, reducing BOM cost by $0.32 per unit. |
| Motor Control Edge Device | Medical Wearable Monitor |
Use Scenario: Compact BLDC fan or pump controller in HVAC or medical equipment requiring precise speed regulation and fault reporting. IC Role / Device Role / Timing Role: Real-time motor controller generating 3-phase PWM via GPT16 modules with POEG output enable; uses IWDT and GPIO readback for stall/fault detection. Use Value: Hardware-accelerated commutation logic and independent watchdog ensure fail-safe shutdown within 10 µs of overcurrent detection. | Use Scenario: ECG/PPG patch monitor with dry-electrode sensing, motion artifact compensation, and Bluetooth LE streaming. IC Role / Device Role / Timing Role: Signal processor acquiring analog biosignals via ADC12, performing real-time filtering with DTC-assisted DMA, and encrypting data before BLE transmission. Use Value: On-chip TRNG and AES-128 meet HIPAA-compliant data-at-rest encryption requirements without external crypto ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R7FA2E2A72DNK#AA0 | 24-pin HWQFN package, 19 GPIOs vs. 15 GPIOs, same flash/SRAM/peripherals | Requires PCB redesign for larger footprint and additional routing; suited for designs needing more I/O or future scalability | Select when board space permits and higher pin count is needed for expansion or debug interfaces. |
| R7FA2E1A72DNJ#AA0 | RA2E1 family: Cortex-M23 @ 48 MHz, 64 KB flash, but no CAN, no I3C, no TSN, reduced safety features (no CAC, no DOC) | Lacks CAN bus and advanced safety blocks - unsuitable for automotive diagnostics or SIL-2 certified systems | Choose only for cost-sensitive consumer applications where CAN, TSN, and functional safety are not required. |
Compared with R7FA2E2A72DNK#AA0, the R7FA2E2A72DNJ#AA1 offers identical functionality in a smaller 20-pin package, saving 16% PCB area; versus R7FA2E1A72DNJ#AA0, it adds critical industrial-grade features - CAN, TSN, CAC, and DOC - making it the only option for safety-aware, sensor-fused edge nodes.
Availability
R7FA2E2A72DNJ#AA1 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart energy meters, motor control edge devices, and medical wearable monitors requiring stable component supply across long production lifecycles.
Supply support for R7FA2E2A72DNJ#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 ISO 26262 ASIL-D certified development processes.
The RA2E2 group is designed for ultra-low-power, cost-optimized industrial and consumer edge applications, emphasizing security, functional safety, and seamless scalability across Renesas' RA portfolio.
FAQ
What is the maximum operating frequency and core architecture of the R7FA2E2A72DNJ#AA1?
The R7FA2E2A72DNJ#AA1 features an Arm Cortex-M23 core compliant with the Armv8-M architecture and operates at a maximum frequency of 48 MHz. This enables high-efficiency real-time processing while maintaining low power consumption. The core includes an 8-region Memory Protection Unit (MPU) and supports TrustZone-M for secure firmware partitioning. All timing-critical operations in the R7FA2E2A72DNJ#AA1 - including ADC sampling, PWM generation, and CAN message handling - are validated at this 48 MHz rate.
Does the R7FA2E2A72DNJ#AA1 support CAN communication, and what version is implemented?
Yes, the R7FA2E2A72DNJ#AA1 integrates a full CAN 2.0B-compliant module supporting both standard (11-bit) and extended (29-bit) identifier frames, bit rates up to 1 Mbps, and hardware message filtering with 32 acceptance filters. The CAN peripheral is fully functional in the R7FA2E2A72DNJ#AA1 without external transceivers - though a physical-layer transceiver (e.g., TJA1042) must be added for bus connection. This capability is confirmed in the RA2E2 datasheet section 1.7 and functional comparison table.
What package type and pin count does the R7FA2E2A72DNJ#AA1 use, and is it pin-compatible with other RA2E2 variants?
The R7FA2E2A72DNJ#AA1 uses a 20-pin HWQFN package (4 mm × 4 mm, 0.5 mm pitch) with an exposed die pad. It shares identical pin functions and signal mapping with other 20-pin RA2E2 variants such as R7FA2E2A52DNJ#AA0 and R7FA2E2A32DNJ#AA0, enabling software reuse and layout compatibility across memory variants. However, it is not pin-compatible with the 24-pin (NK) or 16-pin (BY) RA2E2 packages due to differing pin counts and assignments.
What safety and security features are included in the R7FA2E2A72DNJ#AA1?
The R7FA2E2A72DNJ#AA1 includes ECC for SRAM, Clock Frequency Accuracy Measurement Circuit (CAC), Independent Watchdog Timer (IWDT), Cyclic Redundancy Check (CRC) calculator, Data Operation Circuit (DOC), AES-128/256 encryption engine, and True Random Number Generator (TRNG). These features collectively support IEC 61508 SIL-2 and ISO/SAE 21434 compliance. The R7FA2E2A72DNJ#AA1 implements register write protection via PRCR and illegal memory access detection - all verified in the RA2E2 datasheet sections 1.1 and 2.2.
What is the operating temperature range and supply voltage specification for the R7FA2E2A72DNJ#AA1?
The R7FA2E2A72DNJ#AA1 is rated for industrial operation from -40°C to +85°C and supports a wide supply voltage range of 1.6 V to 5.5 V on VCC. Its analog subsystem (ADC12, DAC12, TSN) operates with VREFH0 configurable from 1.6 V to VCC, enabling direct interfacing with 3.3 V or 5 V sensor signals. This specification is defined in the RA2E2 datasheet Table 2.2 and confirmed in the part numbering scheme ('2' suffix = 85°C grade, 'D' = consumer/industrial quality).
R7FA2E2A72DNJ#AA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 20-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:
- 16
- Program Memory Size:
- 64KB (64K 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 7x12b SAR
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R7FA2E2A72DNJ#AA1 FAQ
1.How can I place an order for R7FA2E2A72DNJ#AA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for R7FA2E2A72DNJ#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 R7FA2E2A72DNJ#AA1 reliable?
The price and inventory of R7FA2E2A72DNJ#AA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R7FA2E2A72DNJ#AA1 is usually 5 days.
3.What payment methods are accepted for R7FA2E2A72DNJ#AA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R7FA2E2A72DNJ#AA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R7FA2E2A72DNJ#AA1?
R7FA2E2A72DNJ#AA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R7FA2E2A72DNJ#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 R7FA2E2A72DNJ#AA1?
For technical support, including R7FA2E2A72DNJ#AA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R7FA2E2A72DNJ#AA1 requirements.
6.How does Aetrix verify that R7FA2E2A72DNJ#AA1 is sourced from the original manufacturer or authorized distributors?
All R7FA2E2A72DNJ#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 R7FA2E2A72DNJ#AA1 meets industry standards.
7.What is the process for return or replacement of R7FA2E2A72DNJ#AA1?
All R7FA2E2A72DNJ#AA1 units undergo pre-shipment inspection (PSI). If there is an issue with R7FA2E2A72DNJ#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 R7FA2E2A72DNJ#AA1 part is unused and in its original packaging.
Return procedure for R7FA2E2A72DNJ#AA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R7FA2E2A72DNJ#AA1 Tags
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