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Renesas R7FA2E2A74CNJ#AA1
- Part No.:
- R7FA2E2A74CNJ#AA1
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 20-WFQFN Exposed Pad
- Datasheet:
-
R7FA2E2A74CNJ#AA1.pdf
- Description:
- IC MCU ARM 64K FLASH 20HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,087
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Product details
Overview
R7FA2E2A74CNJ#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 (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 R7FA2E2A74CNJ#AA1 datasheet, R7FA2E2A74CNJ#AA1 pinout, R7FA2E2A74CNJ#AA1 application, or R7FA2E2A74CNJ#AA1 equivalent, key selection criteria include its 20-pin HWQFN package, -40°C to +125°C operating range, dual watchdog timers (WDT/IWDT), ECC-protected SRAM, and I3C/SPI/SCI peripheral integration for compact, robust edge-node designs.
Technical Context
The R7FA2E2A74CNJ#AA1 implements the Armv8-M architecture with Memory Protection Unit (MPU) supporting 8 regions, enabling secure partitioning of firmware and data. Its clock system includes 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 interconnect is managed via Event Link Controller (ELC), allowing direct module-to-module triggering without CPU intervention. Safety features include CAC for clock accuracy monitoring, ADC self-diagnosis, SRAM parity/ECC error detection, and register write protection - meeting requirements for IEC 61508 SIL2-capable systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M23, 48 MHz max - enables real-time control with TrustZone-M isolation for secure firmware execution. |
| Memory | 64-KB code flash + 2-KB data flash + 8-KB SRAM with ECC - supports field firmware updates and reliable data logging in harsh environments. |
| Analog | 12-bit ADC (8 channels) + 12-bit DAC + on-die temperature sensor - provides precision sensor signal acquisition and analog output control without external components. |
| Connectivity | CAN 2.0B + I3C + SPI + SCI (UART/I²C/SPI/Smart Card) - delivers mixed-protocol communication for industrial bus integration and low-pin-count sensor hubs. |
| Power & Temp | 1.6–5.5 V supply, -40°C to +125°C operation - ensures compatibility with wide-input industrial power rails and under-hood/enclosure deployments. |
| Timers | GPT16 × 6 (12 PWM outputs) + AGTW × 2 + WDT/IWDT - supports motor control (BLDC), pulse-width modulation, and fail-safe reset supervision. |
| Security | AES128/256 + TRNG + memory protection units - meets basic cryptographic requirements for device authentication and encrypted data storage. |
Pinout & Package
Package: 20-pin HWQFN (4 mm × 4 mm, 0.5 mm pitch), exposed die pad recommended connected to VSS or left open. Operating temperature grade: -40°C to +125°C (Industrial).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P400 | CACREF / AGTIO1 | Measurement reference clock input for Clock Accuracy Check; also serves as asynchronous timer event input - enables precise clock validation and low-power wake-up triggering. |
| P401 | VCL | Internal LDO stabilization pin - requires 4.7 µF capacitor to VSS for stable core voltage regulation during deep-sleep transitions. |
| P201/MD | Mode Control | Boot mode selection pin - determines single-chip vs. SCI boot configuration at reset; must remain static during operation. |
| RES | Reset Input | Active-low asynchronous reset - initiates full system initialization including register clearing, clock reconfiguration, and memory initialization. |
| P300/SWCLK | SWD Clock | Serial Wire Debug clock input - enables non-intrusive programming and real-time debugging without halting CPU execution. |
| P108/SWDIO | SWD Data I/O | Serial Wire Debug bidirectional data line - carries debug commands, register reads/writes, and memory access traffic over two-wire interface. |
| P109–P112 | GPT I/O (GTIOCnA/B) | PWM capture/compare pins for GPT16 channels - support complementary output generation with POEG for BLDC motor gate drive control. |
| P010/VREFH0 | Analog Reference High | ADC reference voltage input - configurable from 1.6 V to VCC; connects directly to VCC0 when internal reference is unused. |
Key Features
| Feature | Design Value |
|---|---|
| Event Link Controller (ELC) | Enables zero-CPU-latency peripheral chaining - e.g., ADC conversion completion triggers DMA transfer without interrupt overhead. |
| Data Transfer Controller (DTC) | Hardware-accelerated memory-to-peripheral transfers - reduces CPU load during high-throughput sensor data acquisition or communication buffering. |
| Low-Power Asynchronous Timers (AGTW) | Independent 32-bit timers running from LOCO - maintain accurate timekeeping and wake-up events during stop-mode operation (< 1 µA typical). |
| Capacitive Touch Sensing Unit (CTSU2) | Dedicated hardware for touch electrode scanning - eliminates need for external RC networks and enables < 100 µA active-current touch interfaces. |
| Flash Area Protection | Configurable lock bits per 128-byte sector - prevents unauthorized read/write/erase of bootloader or cryptographic key storage regions. |
Applications
| Industrial Sensor Node | Smart Energy Meter |
|---|---|
Use Scenario: Wireless temperature/humidity/pressure node deployed in factory automation cabinets with ambient temperatures up to 125°C. IC Role / Device Role / Timing Role: Main system controller executing sensor fusion, CAN bus reporting, and low-power sleep scheduling using AGTW timers. Use Value: Integrated 12-bit ADC and temperature sensor eliminate external signal conditioning; ECC SRAM ensures data integrity during voltage dips. |
Use Scenario: DIN-rail mounted electricity meter requiring tamper detection, pulse counting, and secure firmware updates over PLC or RF link. IC Role / Device Role / Timing Role: Secure metering engine managing metrology calculations, AES-encrypted data storage, and real-time clock synchronization via RTC. Use Value: Hardware TRNG and AES accelerate secure boot and OTA update signing; 2-KB data flash enables reliable parameter retention across 100,000 erase cycles. |
| Automotive Cabin Control | Medical Wearable Monitor |
Use Scenario: HVAC actuator module inside vehicle cabin with exposure to thermal cycling and EMI from nearby motors. IC Role / Device Role / Timing Role: Motor driver controller generating 3-phase PWM for BLDC fan motors using GTOUUP/GTOULO outputs and Hall sensor inputs (GTIU/GTIV/GTIW). Use Value: Built-in POEG function disables PWM outputs during fault conditions; IWDT with independent clock guarantees safe shutdown on MCU lockup. |
Use Scenario: Battery-powered ECG/PPG patch requiring sub-10 µA sleep current, capacitive touch UI, and analog front-end signal processing. IC Role / Device Role / Timing Role: System-on-chip integrating biopotential amplification, CTSU2-based button sensing, and BLE interface coordination via SCI UART. Use Value: Ultra-low-power modes (stop mode < 0.5 µA) extend battery life; 5-V-tolerant P400/P401 pins simplify connection to legacy touch controllers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R7FA2E1A74CNJ#AA0 | RA2E1 series; same 20-pin HWQFN, 48 MHz Cortex-M23, but only 128 KB flash, no CAN, no I3C, reduced ADC channels (6), no DAC. | Lacks CAN and I3C interfaces; unsuitable for automotive body control or multi-sensor I3C star topologies. | Select when CAN/I3C are unnecessary and lower cost is prioritized over peripheral richness. |
| R7FA4M2AD4CNJ#AA0 | RA4M2 series; 20-pin HWQFN, Cortex-M33, 256 KB flash, 32 KB SRAM, CAN FD, USB, higher performance, but no 125°C rating. | Higher power consumption and limited to -40°C to +105°C - not qualified for under-hood or high-temp industrial enclosures. | Choose when advanced peripherals (USB, CAN FD) and larger memory are needed, and extended temperature is not required. |
Compared with R7FA2E2A74CNJ#AA1, the RA2E1 alternative sacrifices CAN and I3C for cost reduction, while the RA4M2 offers enhanced compute and connectivity at the expense of temperature rating and power efficiency - making R7FA2E2A74CNJ#AA1 optimal for thermally demanding, protocol-diverse edge nodes.
Availability
R7FA2E2A74CNJ#AA1 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart energy meters, and automotive cabin control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for R7FA2E2A74CNJ#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 is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and enterprise applications.
The RA2E2 group is designed for ultra-low-power, cost-sensitive embedded systems requiring functional safety, security, and extended temperature operation - targeting smart sensing, metering, and control in resource-constrained environments.
FAQ
What is the maximum operating frequency and core architecture of the R7FA2E2A74CNJ#AA1?
The R7FA2E2A74CNJ#AA1 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) and supports TrustZone-M for secure firmware partitioning. This architecture enables deterministic real-time performance while maintaining low power consumption in battery-operated devices.
Does the R7FA2E2A74CNJ#AA1 support CAN communication, and what version is implemented?
Yes, the R7FA2E2A74CNJ#AA1 integrates a CAN 2.0B-compliant module supporting standard and extended frame formats with bit rates up to 1 Mbps. It includes dedicated message RAM, transmit/receive FIFOs, and automatic retransmission - enabling robust communication in industrial automation and automotive subsystems without external CAN transceivers.
What are the supported operating temperature ranges and package type for R7FA2E2A74CNJ#AA1?
The R7FA2E2A74CNJ#AA1 is packaged in a 20-pin HWQFN (4 mm × 4 mm, 0.5 mm pitch) and is rated for operation from -40°C to +125°C. The exposed die pad is recommended to be connected to VSS or left floating. This industrial-grade temperature range makes it suitable for deployment in high-ambient environments such as motor drives and energy infrastructure equipment.
How does the R7FA2E2A74CNJ#AA1 handle memory reliability and safety-critical data integrity?
The R7FA2E2A74CNJ#AA1 implements ECC on its 8-KB SRAM and flash area protection mechanisms to prevent unauthorized modification. It also includes SRAM parity error checking, ADC self-diagnosis, and Clock Frequency Accuracy Measurement Circuit (CAC) - collectively supporting IEC 61508 SIL2-level functional safety requirements for critical embedded control applications.
Which analog peripherals are integrated into the R7FA2E2A74CNJ#AA1, and what are their key specifications?
The R7FA2E2A74CNJ#AA1 integrates a 12-bit successive approximation ADC (ADC12) with up to 8 input channels, a 12-bit DAC (DAC12), an on-die temperature sensor (TSN), and two low-power analog comparators (ACMPLP). The ADC supports internal reference and temperature sensor inputs, while the DAC provides rail-to-rail output - enabling closed-loop analog control and sensor signal conditioning without external components.
R7FA2E2A74CNJ#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 ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R7FA2E2A74CNJ#AA1 FAQ
1.How can I place an order for R7FA2E2A74CNJ#AA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for R7FA2E2A74CNJ#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 R7FA2E2A74CNJ#AA1 reliable?
The price and inventory of R7FA2E2A74CNJ#AA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R7FA2E2A74CNJ#AA1 is usually 5 days.
3.What payment methods are accepted for R7FA2E2A74CNJ#AA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R7FA2E2A74CNJ#AA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R7FA2E2A74CNJ#AA1?
R7FA2E2A74CNJ#AA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R7FA2E2A74CNJ#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 R7FA2E2A74CNJ#AA1?
For technical support, including R7FA2E2A74CNJ#AA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R7FA2E2A74CNJ#AA1 requirements.
6.How does Aetrix verify that R7FA2E2A74CNJ#AA1 is sourced from the original manufacturer or authorized distributors?
All R7FA2E2A74CNJ#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 R7FA2E2A74CNJ#AA1 meets industry standards.
7.What is the process for return or replacement of R7FA2E2A74CNJ#AA1?
All R7FA2E2A74CNJ#AA1 units undergo pre-shipment inspection (PSI). If there is an issue with R7FA2E2A74CNJ#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 R7FA2E2A74CNJ#AA1 part is unused and in its original packaging.
Return procedure for R7FA2E2A74CNJ#AA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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