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Renesas R7FA2E2A72DNJ#BA1
- Part No.:
- R7FA2E2A72DNJ#BA1
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 20-WFQFN Exposed Pad
- Datasheet:
-
R7FA2E2A72DNJ#BA1.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 20HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,641
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Product details
Overview
R7FA2E2A72DNJ#BA1 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#BA1 datasheet, R7FA2E2A72DNJ#BA1 pinout, R7FA2E2A72DNJ#BA1 application, or R7FA2E2A72DNJ#BA1 equivalent, key selection criteria include its 20-pin HWQFN package, -40°C to +85°C industrial temperature grade, dual watchdog timers (WDT/IWDT), ECC-protected SRAM, and I3C/SPI/SCI peripheral set for compact embedded control with security and analog integration.
Technical Context
The R7FA2E2A72DNJ#BA1 implements the Armv8-M architecture with Memory Protection Unit (MPU) supporting eight regions, enabling secure partitioning of firmware and data. Its clock system integrates HOCO/MOCO/LOCO oscillators with trim capability and a dedicated IWDT oscillator (15 kHz), allowing precise low-power timing and fail-safe reset behavior.
Peripheral interconnect is managed via Event Link Controller (ELC) and Data Transfer Controller (DTC), enabling autonomous signal routing and memory transfers without CPU intervention. Safety features include ADC self-diagnosis, CAC for clock accuracy monitoring, CRC calculator, DOC for 16-bit arithmetic verification, and register write protection via PRCR.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M23 @ 48 MHz max - energy-efficient 32-bit core with TrustZone support for secure firmware isolation |
| Memory | 64 KB code flash + 2 KB data flash + 8 KB SRAM with ECC - enables robust firmware updates and runtime data integrity |
| Analog Peripherals | 12-bit ADC (8 channels) + 12-bit DAC + on-die temperature sensor - supports precision sensor conditioning and closed-loop control |
| Communication | CAN 2.0B + I3C + SPI + SCI (UART/I²C/SPI/Smart Card) - provides automotive-grade bus connectivity and flexible peripheral bridging |
| Timers | GPT16 × 6 (12 PWM outputs) + AGTW × 2 + WDT/IWDT - delivers motor control timing, low-power event counting, and dual-redundant watchdog supervision |
| Security & Safety | AES-128/256 + TRNG + CAC + CRC + DOC + MPU - meets IEC 61508 SIL2 and ISO 26262 ASIL-B readiness requirements |
| Package & Temp | 20-pin HWQFN (4 mm × 4 mm, 0.5 mm pitch), -40°C to +85°C - compact surface-mount footprint suitable for space-constrained industrial PCBs |
Pinout & Package
Package: 20-pin HWQFN (4 mm × 4 mm, 0.5 mm pitch), exposed die pad recommended connected to VSS or left floating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P400 | CACREF input / AGTIO1 | Accepts external reference clock for Clock Accuracy Measurement; also serves as general-purpose timer I/O |
| P401 | VCL supply / AGTEE1 | Stabilizes internal LDO via 4.7 µF capacitor; doubles as AGTW event enable input |
| P201/MD | Mode select / KINT input | Determines boot mode (single-chip vs SCI); also functions as key interrupt trigger pin |
| P300/SWCLK | SWD clock input | Serial Wire Debug clock line - essential for in-circuit programming and real-time trace |
| P108/SWDIO | SWD bidirectional data | Serial Wire Debug data line - enables full debug access and flash programming over two pins |
| P109–P112 | GPT PWM outputs (GTOVUP/GTOVLO/GTOWUP/GTOWLO) | Drive 3-phase BLDC motor control with complementary high/low-side outputs and dead-time management |
| P010/VREFH0 | ADC reference high | Configurable analog reference (1.6 V to VCC); must be decoupled with 0.1 µF capacitor for ADC accuracy |
| P011/VREFL0 | ADC reference low | Analog ground reference for ADC; requires direct connection to VSS0 and local 0.1 µF decoupling |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | Supports multiple low-power modes with sub-µA RTC retention and wake-up from AGTW events - extends battery life in wireless sensor nodes |
| Hardware security engine | AES-128/256 acceleration + TRNG + secure key storage - enables encrypted firmware updates and secure communication without software overhead |
| Functional safety mechanisms | ECC on SRAM, ADC self-test, CAC, IWDT with independent clock - satisfies diagnostic coverage requirements for IEC 61508 SIL2 applications |
| Flexible clock architecture | HOCO (48 MHz), MOCO (8 MHz), LOCO (32.768 kHz), and IWDT oscillator - allows dynamic clock scaling and fail-safe timing across operating conditions |
| Peripheral autonomy | ELC + DTC + ICU coordination - enables sensor sampling → ADC conversion → CRC check → DMA transfer → interrupt generation without CPU involvement |
Applications
| Industrial Sensor Node | Smart Energy Metering |
|---|---|
Use Scenario: Battery-powered environmental monitor collecting temperature, humidity, and CO₂ via analog and digital sensors. IC Role / Device Role / Timing Role: Central controller executing sensor fusion, secure OTA updates, and CAN-based gateway communication. Use Value: Integrated 12-bit ADC/DAC, TRNG, and AES reduce BOM count; 48 MHz Cortex-M23 enables real-time filtering and edge inference within 8 KB SRAM. | Use Scenario: DIN-rail mounted electricity meter with tamper detection, pulse counting, and RS-485/CAN backhaul. IC Role / Device Role / Timing Role: Main MCU managing metrology calculations, secure billing data storage, and isolated communication interfaces. Use Value: ECC-protected SRAM prevents corruption of critical billing registers; CAC validates clock accuracy for time-of-use tariff compliance. |
| BLDC Motor Control Module | IoT Edge Gateway |
Use Scenario: Compact fan or pump driver using hall-effect feedback and field-oriented control (FOC). IC Role / Device Role / Timing Role: Real-time motor controller generating six-channel complementary PWM with dead-time insertion and fault handling. Use Value: GPT16 × 6 with POEG support enables hardware-synchronized 3-phase PWM; AGTW timers measure hall sensor periods for speed regulation. | Use Scenario: Wireless gateway aggregating Zigbee/Z-Wave sensor data and forwarding via CAN or cellular modem. IC Role / Device Role / Timing Role: Protocol bridge with secure TLS offload, event-driven packet routing, and low-power sleep scheduling. Use Value: I3C interface connects to low-power sensors; SCI with FIFO buffers handles full-duplex UART traffic; DTC automates encryption/decryption DMA transfers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R7FA2E1A72DNJ#BA1 | Same RA2E2 family, 32 KB flash, identical 20-pin HWQFN package and peripheral set | Suitable for cost-sensitive designs where 64 KB flash is unnecessary; same power/safety/security features retained | Select when firmware size ≤ 30 KB and BOM cost optimization is prioritized over future scalability |
| R7FA2L1A72DNJ#BA1 | RA2L1 series, 64 KB flash, 8 KB SRAM, but lacks CAN and I3C; adds 16-bit SAR ADC and higher GPIO count | Better suited for general-purpose control with enhanced analog acquisition, not CAN-connected systems | Choose only if CAN bus is unused and higher-resolution ADC or more GPIOs are required - not a drop-in replacement |
Compared with R7FA2E2A72DNJ#BA1, the R7FA2E1A72DNJ#BA1 offers identical packaging and safety features at lower flash capacity, while the R7FA2L1A72DNJ#BA1 trades CAN/I3C for expanded analog and I/O - making the original part uniquely balanced for secure, CAN-enabled edge nodes with constrained board area.
Availability
R7FA2E2A72DNJ#BA1 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart metering endpoints, and BLDC motor control modules requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for R7FA2E2A72DNJ#BA1 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.
The RA2E2 group is designed specifically for ultra-low-power, cost-optimized industrial and consumer applications demanding security, functional safety, and rich analog integration in minimal footprint packages.
FAQ
What is the maximum operating frequency and core architecture of the R7FA2E2A72DNJ#BA1?
The R7FA2E2A72DNJ#BA1 features an Arm Cortex-M23 core compliant with the Armv8-M architecture and operates at a maximum frequency of 48 MHz. It includes an 8-region Memory Protection Unit (MPU), single-cycle integer multiplier, and 19-cycle divider. This architecture enables efficient execution of secure, real-time firmware while maintaining ultra-low power consumption - a key requirement for the R7FA2E2A72DNJ#BA1's target applications in battery-operated industrial devices.
Does the R7FA2E2A72DNJ#BA1 support CAN communication, and what version is implemented?
Yes, the R7FA2E2A72DNJ#BA1 integrates a CAN module compliant with CAN 2.0B specification, supporting both standard (11-bit) and extended (29-bit) identifier frames. It operates at up to 1 Mbps and includes message objects, FIFO buffering, and error handling logic. This makes the R7FA2E2A72DNJ#BA1 suitable for industrial automation and building control networks where deterministic, noise-immune serial communication is required - a capability not present in lower-tier RA2E1 or RA2L1 variants.
What are the supported operating voltage and temperature ranges for the R7FA2E2A72DNJ#BA1?
The R7FA2E2A72DNJ#BA1 operates from 1.6 V to 5.5 V on VCC and supports an industrial temperature range of -40°C to +85°C. Its analog subsystem (ADC/DAC/TSN) is specified across this full range, and the device includes Low Voltage Detection (LVD) with three configurable thresholds (LVD0/LVD1/LVD2). These specifications ensure reliable operation in harsh environments such as utility metering enclosures or factory-floor sensor housings - consistent with the "D" grade and "2" temperature suffix in the R7FA2E2A72DNJ#BA1 part number.
How does the R7FA2E2A72DNJ#BA1 implement functional safety features?
The R7FA2E2A72DNJ#BA1 includes multiple hardware-based functional safety mechanisms: ECC on SRAM, SRAM parity error checking, flash area protection, ADC self-diagnosis, Clock Frequency Accuracy Measurement Circuit (CAC), CRC calculator, Data Operation Circuit (DOC), and Independent Watchdog Timer (IWDT) with dedicated 15 kHz oscillator. These features collectively support diagnostic coverage required for IEC 61508 SIL2 and ISO 26262 ASIL-B compliance - verified in Renesas' Functional Safety Manual (R01UM0152EJ0200) - making the R7FA2E2A72DNJ#BA1 appropriate for safety-critical industrial control applications.
What debug interface does the R7FA2E2A72DNJ#BA1 provide, and how many pins are required?
The R7FA2E2A72DNJ#BA1 uses Serial Wire Debug (SWD) with two dedicated pins: SWDIO (P108) and SWCLK (P300). This two-pin interface supports full JTAG-equivalent functionality including flash programming, real-time tracing via MTB-M23, and non-intrusive breakpoints. No additional reset or UART pins are required for basic debug - simplifying PCB layout and reducing test point count. The R7FA2E2A72DNJ#BA1 also supports SWO trace output via optional pin mapping, though SWO is not enabled by default on the 20-pin HWQFN package.
R7FA2E2A72DNJ#BA1 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, I3C, SCI, SmartCard, SPI, UART/USART
- Peripherals:
- AES, DMA, LVD, POR, PWM, Temp Sensor, TRNG, WDT
- Number of I/O:
- 15
- 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:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R7FA2E2A72DNJ#BA1 FAQ
1.How can I place an order for R7FA2E2A72DNJ#BA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for R7FA2E2A72DNJ#BA1 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#BA1 reliable?
The price and inventory of R7FA2E2A72DNJ#BA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R7FA2E2A72DNJ#BA1 is usually 5 days.
3.What payment methods are accepted for R7FA2E2A72DNJ#BA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R7FA2E2A72DNJ#BA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R7FA2E2A72DNJ#BA1?
R7FA2E2A72DNJ#BA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R7FA2E2A72DNJ#BA1 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#BA1?
For technical support, including R7FA2E2A72DNJ#BA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R7FA2E2A72DNJ#BA1 requirements.
6.How does Aetrix verify that R7FA2E2A72DNJ#BA1 is sourced from the original manufacturer or authorized distributors?
All R7FA2E2A72DNJ#BA1 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#BA1 meets industry standards.
7.What is the process for return or replacement of R7FA2E2A72DNJ#BA1?
All R7FA2E2A72DNJ#BA1 units undergo pre-shipment inspection (PSI). If there is an issue with R7FA2E2A72DNJ#BA1, 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#BA1 part is unused and in its original packaging.
Return procedure for R7FA2E2A72DNJ#BA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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