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Renesas R7FA2E2A54CNJ#AA1
- Part No.:
- R7FA2E2A54CNJ#AA1
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 20-WFQFN Exposed Pad
- Datasheet:
-
R7FA2E2A54CNJ#AA1.pdf
- Description:
- IC MCU ARM 32K FLASH 20HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,195
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Product details
Overview
R7FA2E2A54CNJ#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 including AES-128/256 and TRNG - deployed in battery-powered industrial sensors and smart metering endpoints.
For engineers reviewing the R7FA2E2A54CNJ#AA1 datasheet, R7FA2E2A54CNJ#AA1 pinout, R7FA2E2A54CNJ#AA1 application, or R7FA2E2A54CNJ#AA1 equivalent, key selection criteria include its 20-pin HWQFN package, -40°C to +125°C extended temperature rating, dual low-power timers (AGTW), I3C bus support, and 5-V-tolerant GPIOs on P400/P401 for direct interfacing with legacy logic.
Technical Context
The R7FA2E2A54CNJ#AA1 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 (48 MHz), MOCO (8 MHz), LOCO (32.768 kHz), and IWDT-dedicated 15-kHz oscillator - all trimmable via on-chip calibration.
System-level timing control is handled by Event Link Controller (ELC), which enables direct peripheral-to-peripheral triggering without CPU intervention, while Data Transfer Controller (DTC) offloads memory transfers during interrupt events - critical for deterministic low-latency sensor acquisition and CAN message handling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M23 @ 48 MHz max - delivers deterministic real-time response with single-cycle multiply and 19-cycle divide for motor control and signal processing. |
| Memory | 32-KB code flash / 2-KB data flash / 8-KB SRAM with ECC - supports field firmware updates and robust data logging in harsh environments. |
| Analog Peripherals | 12-bit ADC12 (8 channels) + 12-bit DAC12 + on-die temperature sensor - enables precision analog sensing and closed-loop control without external components. |
| Communication | CAN 2.0B + I3C + SCI (UART/SPI/I²C-compatible) + SPI × 1 - provides interoperability with automotive networks, next-gen sensors, and legacy peripherals. |
| Power & Safety | 1.6–5.5 V operation, LVD with three thresholds, CAC for clock accuracy monitoring, IWDT with independent oscillator - ensures reliable operation across wide supply and temperature ranges. |
| Package & Temp | 20-pin HWQFN (4 mm × 4 mm, 0.5 mm pitch), -40°C to +125°C - suitable for compact, thermally demanding industrial enclosures and automotive under-hood modules. |
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 floating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P400 | CACREF / AGTIO1 / IRQ0 | Measurement reference clock input for CAC; external event input for AGTW timer; maskable interrupt source - enables precise clock validation and wake-on-event functionality. |
| P401 | VCL / AGTEE1 / IRQ5 | Internal LDO stabilization capacitor connection; AGTW event enable; interrupt request pin - critical for low-noise analog performance and ultra-low-power wake-up sequencing. |
| P010/VREFH0 | Analog reference high | ADC12 reference voltage input (1.6–5.5 V range); must be decoupled with 0.1 µF capacitor - defines full-scale conversion accuracy and noise immunity. |
| P011/VREFL0 | Analog reference low | ADC12 reference ground; tied to VSS when unused - establishes stable reference baseline for differential analog measurements. |
| P108/SWDIO | SWD debug data I/O | Two-wire serial wire debug interface - enables non-intrusive firmware debugging and programming without dedicated JTAG pins. |
| P300/SWCLK | SWD debug clock | Clock input for SWD interface - synchronizes debug communication and supports traceless in-circuit programming. |
| P201/MD | Mode select | Determines boot mode (single-chip vs. SCI boot) at reset - must remain static during power-up to avoid undefined startup behavior. |
| RES | Active-low reset | Asynchronous reset input; internal POR/LVD also asserts reset - ensures deterministic initialization after brownout or power cycling. |
Key Features
| Feature | Design Value |
|---|---|
| Event Link Controller (ELC) | Enables zero-CPU-overhead peripheral chaining - e.g., ADC conversion completion triggers DTC transfer to SRAM, then ELC signals GPT to start PWM output. |
| Low-Power Asynchronous Timers (AGTW × 2) | Operate independently of main clock domain using LOCO or sub-clock - sustain accurate timekeeping and wake-up events during deep-sleep modes consuming <1 µA. |
| Hardware Security Engine | AES-128/256 acceleration + TRNG + register write protection - accelerates secure boot, encrypted OTA updates, and tamper-resistant key storage without software overhead. |
| 5-V-Tolerant GPIOs (P400, P401) | Direct interface with 5-V logic families without level shifters - simplifies integration with legacy industrial I/O modules and RS-485 transceivers. |
| Integrated CAN 2.0B Controller | Full CAN protocol stack support with message buffering and error handling - eliminates need for external CAN transceiver controller in basic node applications. |
Applications
| Industrial Sensor Node | Smart Energy Meter |
|---|---|
Use Scenario: Battery-powered wireless temperature/humidity/pressure sensor deployed in factory automation with 10-year lifetime requirement. IC Role / Device Role / Timing Role: Main system controller executing sensor fusion, BLE/Wi-Fi offload, and secure firmware updates; AGTW timers manage periodic wake-up and sleep cycles. Use Value: 32-KB flash accommodates dual-bank OTA; 12-bit ADC directly digitizes analog sensor outputs; 5-V-tolerant pins simplify connection to industrial transducers. | Use Scenario: DIN-rail mounted electricity meter requiring metrology-grade accuracy, tamper detection, and DLMS/COSEM compliance. IC Role / Device Role / Timing Role: System management MCU coordinating metrology IC (e.g., ADE7953), secure SE, and PLC/GPRS communication; CAC validates clock integrity for time-stamped billing records. Use Value: AES-256 encrypts consumption data; CRC calculator verifies firmware and configuration integrity; CAN interface connects to auxiliary grid monitoring devices. |
| Automotive Body Control Module | IoT Edge Gateway |
Use Scenario: Under-hood lighting or HVAC actuator module operating at 125°C ambient with CAN network connectivity. IC Role / Device Role / Timing Role: Real-time actuator driver with PWM-controlled fan/motor outputs; IWDT with independent oscillator ensures fail-safe reset during voltage transients. Use Value: GPT16 × 6 provides 12 PWM outputs for multi-channel motor control; -40°C to +125°C rating eliminates derating concerns; hardware TRNG seeds secure session keys. | Use Scenario: Industrial gateway aggregating Modbus RTU, I²C sensors, and LoRaWAN uplink with local edge analytics. IC Role / Device Role / Timing Role: Protocol translation hub managing concurrent SCI (Modbus), I3C (smart sensors), and SPI (LoRa transceiver); DTC handles burst data transfers without CPU load. Use Value: I3C supports high-speed, low-pin-count sensor discovery; 8-KB SRAM buffers multiple protocol payloads; LVD monitors 3.3-V rail for graceful shutdown. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R7FA2E2A54CNK#AA0 | 24-pin HWQFN package; adds 4 GPIOs and one additional ADC channel (AN019–AN022). | Suitable for designs requiring more analog inputs or expanded I/O without changing firmware logic. | Select when board layout allows larger footprint and additional peripherals are needed - same core, memory, and feature set otherwise. |
| STM32G071CBT6 | Arm Cortex-M0+, 64 MHz, 128-KB flash, no CAN or I3C; different debug interface (SWD only). | Better suited for cost-sensitive, high-volume consumer applications where CAN and extended temp are not required. | Choose only if CAN, I3C, and -40°C to +125°C operation are unnecessary - requires full firmware porting due to architectural and peripheral differences. |
Compared with R7FA2E2A54CNJ#AA1, the R7FA2E2A54CNK#AA0 offers identical functionality in a larger package for I/O expansion, while the STM32G071CBT6 lacks CAN/I3C and extended temperature support - making it unsuitable for automotive or industrial networking roles where those features are mandatory.
Availability
R7FA2E2A54CNJ#AA1 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart energy meters, and automotive body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for R7FA2E2A54CNJ#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 applications.
The RA2E2 Group targets ultra-low-power, cost-optimized 32-bit MCUs for battery-operated and thermally constrained systems - emphasizing security, analog integration, and simplified development with Flexible Software Package (FSP) support.
FAQ
What is the maximum operating frequency of the R7FA2E2A54CNJ#AA1?
The R7FA2E2A54CNJ#AA1 operates at a maximum frequency of 48 MHz using its Arm Cortex-M23 core. This speed is achieved with the high-speed on-chip oscillator (HOCO) configured at 48 MHz, and the device maintains full peripheral functionality and timing specifications at this rate across its rated temperature range of -40°C to +125°C. The R7FA2E2A54CNJ#AA1 supports clock trimming to maintain accuracy under voltage and temperature variation.
Does the R7FA2E2A54CNJ#AA1 support CAN FD or only classical CAN 2.0B?
The R7FA2E2A54CNJ#AA1 integrates a classical CAN 2.0B controller compliant with ISO 11898-1, supporting bit rates up to 1 Mbps and standard/extended frame formats. It does not support CAN FD features such as flexible data-rate or increased payload length. For CAN FD requirements, designers should consider higher-tier RA-family devices like the RA6M5. The R7FA2E2A54CNJ#AA1's CAN module is fully functional for legacy automotive and industrial network nodes.
How many ADC input channels are available on the R7FA2E2A54CNJ#AA1?
The R7FA2E2A54CNJ#AA1 provides seven selectable analog input channels for its 12-bit ADC12 module: AN005, AN006, AN009, AN010, AN019, AN020, and AN021. Channel AN020 doubles as ADTRG0, supporting external trigger initiation of conversions. This count reflects the 20-pin HWQFN variant; the 24-pin version adds AN022. All channels support internal temperature sensor and reference voltage inputs for self-calibration.
Is the R7FA2E2A54CNJ#AA1 pin-compatible with other RA2E2 group members?
The R7FA2E2A54CNJ#AA1 shares the same 20-pin HWQFN footprint and pin functions with other NJ-suffixed RA2E2 variants (e.g., R7FA2E2A74CNJ#AA0), but is not pin-compatible with NK (24-pin) or BY (16-pin WLCSP) variants. Within the NJ package family, memory size differences (16/32/64 KB flash) do not affect pin mapping or electrical behavior - enabling scalable design reuse across performance tiers without PCB revision.
What debug interfaces does the R7FA2E2A54CNJ#AA1 support?
The R7FA2E2A54CNJ#AA1 supports Serial Wire Debug (SWD) via dedicated SWDIO (P108) and SWCLK (P300) pins, compliant with ARM CoreSight™ MTB-M23 and SW-DP standards. It does not include JTAG pins. Debug access enables full read/write memory inspection, breakpoint setting, and real-time trace via compatible tools including Renesas E2 studio, SEGGER J-Link, and IAR Embedded Workbench - all verified with the R7FA2E2A54CNJ#AA1 silicon revision.
R7FA2E2A54CNJ#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:
- 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 7x12b SAR
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R7FA2E2A54CNJ#AA1 FAQ
1.How can I place an order for R7FA2E2A54CNJ#AA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for R7FA2E2A54CNJ#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 R7FA2E2A54CNJ#AA1 reliable?
The price and inventory of R7FA2E2A54CNJ#AA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R7FA2E2A54CNJ#AA1 is usually 5 days.
3.What payment methods are accepted for R7FA2E2A54CNJ#AA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R7FA2E2A54CNJ#AA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R7FA2E2A54CNJ#AA1?
R7FA2E2A54CNJ#AA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R7FA2E2A54CNJ#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 R7FA2E2A54CNJ#AA1?
For technical support, including R7FA2E2A54CNJ#AA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R7FA2E2A54CNJ#AA1 requirements.
6.How does Aetrix verify that R7FA2E2A54CNJ#AA1 is sourced from the original manufacturer or authorized distributors?
All R7FA2E2A54CNJ#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 R7FA2E2A54CNJ#AA1 meets industry standards.
7.What is the process for return or replacement of R7FA2E2A54CNJ#AA1?
All R7FA2E2A54CNJ#AA1 units undergo pre-shipment inspection (PSI). If there is an issue with R7FA2E2A54CNJ#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 R7FA2E2A54CNJ#AA1 part is unused and in its original packaging.
Return procedure for R7FA2E2A54CNJ#AA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R7FA2E2A54CNJ#AA1 Tags
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