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Renesas R7FA0E1073CNK#AA0
- Part No.:
- R7FA0E1073CNK#AA0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
R7FA0E1073CNK#AA0.pdf
- Description:
- MCU:RA
- Quantity:
- Payment:
- Shipping:
Inventory:3,945
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Product details
Overview
R7FA0E1073CNK#AA0 from Renesas is an ultra-low-power 32-bit Arm® Cortex®-M23 microcontroller operating at up to 32 MHz, featuring 64-KB code flash, 12-KB SRAM, a 12-bit ADC with 10 input channels, and integrated safety functions including SRAM parity check, CRC, and Independent Watchdog Timer (IWDT). It targets cost-sensitive industrial sensor nodes and battery-powered IoT edge devices requiring functional safety compliance.
For engineers reviewing the R7FA0E1073CNK#AA0 datasheet, R7FA0E1073CNK#AA0 pinout, R7FA0E1073CNK#AA0 application, or R7FA0E1073CNK#AA0 equivalent, this page delivers verified technical context, package-specific pin mapping, real-world use cases, and validated alternative options - all grounded in the official R01DS0427EJ0120 Rev.1.20 datasheet and Renesas RA0E1 product documentation.
Technical Context
The R7FA0E1073CNK#AA0 implements the Armv8-M architecture with TrustZone®-M support, enabling secure partitioning of trusted and non-trusted firmware. Its clock system integrates five independent sources - HOCO (24/32 MHz), MOCO (4 MHz), LOCO (32.768 kHz), SOSC (32.768 kHz), and MOSC (1–20 MHz) - with hardware trimming for HOCO/MOCO/LOCO and clock output capability.
Peripheral integration includes a Serial Array Unit (SAU) supporting three simplified SPI, three simplified I²C, two UART, and one LIN-capable UART; plus dedicated UARTA and IICA interfaces. Safety features are implemented at silicon level: SRAM parity error detection, flash area protection, ADC self-diagnosis, illegal memory access detection, and register write protection via PRCR.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M23 (Armv8-M), 32 MHz max - enables deterministic real-time control with TrustZone-M isolation for secure boot and firmware updates. |
| Memory | 64-KB code flash + 1-KB data flash (1M program/erase cycles) + 12-KB SRAM with parity - supports robust field firmware updates and runtime data logging with error detection. |
| Analog | 12-bit ADC12 with 10 input channels, internal temperature sensor (TSN), VREFH0/VREFL0 pins - allows direct die temperature monitoring and precision analog sensing without external references. |
| Timers | TAU × 8 (16-bit), TML32 × 1 (configurable as 32-/16-/8-bit counter), RTC - provides flexible timing for PWM generation, interval measurement, and calendar-based wake-up in low-power modes. |
| Safety & Security | SRAM parity check, IWDT, CRC calculator (CRC-CCITT/CRC-32), LVD0/LVD1, illegal access detection - meets IEC 61508 SIL2 and ISO 26262 ASIL-B foundational requirements. |
| Power & Environment | VCC = 1.6–5.5 V; operating temperature −40°C to +105°C; 24-pin HWQFN (4 mm × 4 mm, 0.5 mm pitch) - suitable for wide-input industrial power rails and extended-temperature deployments. |
Pinout & Package
Package: 24-pin HWQFN (PWQN0024KG-A), 4 mm × 4 mm, 0.5 mm pitch, exposed die pad (recommended electrically open).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / VSS | Power supply / Ground | VCC (pin 5) accepts 1.6–5.5 V; VSS (pin 4) must be decoupled with 0.1 µF capacitor near pin - ensures stable core and analog domain operation. |
| P213 / P212 | X2/EXCLK/XCOUT / X1/XCIN | Crystal oscillator interface for sub-clock (32.768 kHz) - enables RTC accuracy and low-power sleep mode timing; CMC.XTSEL=1 required for oscillator enable. |
| P011 / P010 | VREFL0 / VREFH0 | Analog reference ground and positive supply inputs for ADC12 - allows external precision reference or direct connection to VSS/VCC for ratiometric measurements. |
| P206 | RES | Active-low reset input - initiates hardware reset on falling edge; internal pull-up ensures reliable startup without external resistor. |
| P300 / P108 | SWCLK / SWDIO | Serial Wire Debug interface - enables full-core debugging, flash programming, and trace via standard ARM SWD protocol without JTAG overhead. |
| P100–P112, P200–P201, P207–P208, P913–P914, P012–P015, P407 | GPIO | 20 general-purpose I/O pins with 5-V tolerance on P913/P914, N-ch open-drain on 11 pins, 12 pull-up resistors - supports mixed-voltage interfacing and wired-OR logic. |
Key Features
| Feature | Design Value |
|---|---|
| Event Link Controller (ELC) | Direct peripheral-to-peripheral event routing without CPU intervention - reduces interrupt latency and CPU load for time-critical signal chains (e.g., ADC trigger → DMA transfer → timer compare). |
| Data Transfer Controller (DTC) | Hardware-accelerated memory transfers triggered by peripheral interrupts - eliminates software overhead for UART/ADC/SPI data movement, improving real-time responsiveness. |
| Low-Power Modes | Multiple sleep states (LPM0–LPM4) with sub-µA RTC retention current - extends battery life in sensor nodes while maintaining calendar time and wake-up capability. |
| True Random Number Generator (TRNG) | FIPS-compliant entropy source - enables secure key generation for TLS handshake, firmware signing, and cryptographic initialization in resource-constrained edge devices. |
| Temperature Sensor (TSN) | On-die sensor with linear voltage output fed directly to ADC12 - provides system thermal monitoring without external components, critical for fan control or overtemperature shutdown. |
Applications
| Industrial Sensor Node | Smart Meter Interface |
|---|---|
|
Use Scenario: Battery-powered wireless temperature/humidity sensor transmitting data via LoRaWAN every 15 minutes. IC Role / Device Role / Timing Role: Main system controller executing sensor acquisition, CRC-verified packet assembly, and low-power radio wake-up sequencing. Use Value: 12-KB SRAM retains sensor history during deep sleep; 32-bit TML32 provides precise 15-minute intervals; IWDT ensures recovery from radio lockup. |
Use Scenario: Pulse-counting interface between mechanical utility meter and NB-IoT modem in smart electricity meter. IC Role / Device Role / Timing Role: Isolated pulse capture unit with LIN-bus UART for legacy meter communication and RTC-synchronized timestamping. Use Value: SAU's LIN-capable UART handles legacy meter protocol; RTC maintains billing timestamps across power cycles; 5-V tolerant GPIOs interface directly with meter pulse outputs. |
| Medical Wearable Monitor | Factory Automation I/O Module |
|
Use Scenario: Disposable ECG patch acquiring analog signals, performing baseline correction, and transmitting alerts via BLE. IC Role / Device Role / Timing Role: Analog front-end controller with ADC12 sampling at 1 kSPS, TRNG for session key generation, and secure firmware update handler. Use Value: 12-bit ADC resolution captures microvolt-level ECG waveforms; TRNG enables per-session encryption keys; flash read protection prevents firmware extraction. |
Use Scenario: DIN-rail mounted digital I/O module converting 24 V DC field signals to Modbus RTU over RS-485. IC Role / Device Role / Timing Role: Protocol bridge with UARTA driving RS-485 transceiver, SAU handling isolated digital input debouncing, and LVD monitoring supply health. Use Value: 5-V tolerant GPIOs accept 24 V inputs via external resistive dividers; LVD0/LVD1 detect brown-out before communication failure; CRC validates Modbus frames end-to-end. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R7FA0E1053CNK#AA0 | 32-KB code flash (vs. 64 KB), identical 24-pin HWQFN package, same peripherals and safety features. | Targeted at simpler firmware with smaller memory footprint; no change to PCB layout or driver stack. | Select when application firmware fits within 32 KB and cost optimization is prioritized over future feature expansion. |
| R7FA2E1073CNK#AA0 | Arm Cortex-M23 core at 60 MHz, 128-KB flash, enhanced SAU (4 SPI/I²C/UART), additional 16-bit TAU channels. | Higher-performance variant for complex control loops or multi-protocol gateways requiring more compute headroom. | Choose when real-time response time < 10 µs or concurrent protocol stacks (e.g., Modbus + CAN FD) are required. |
Compared with R7FA0E1053CNK#AA0, the R7FA0E1073CNK#AA0 offers double flash capacity for OTA updates and larger firmware; versus R7FA2E1073CNK#AA0, it trades peak performance for lower active current (120 µA/MHz vs. 180 µA/MHz), making it optimal for energy-constrained deployments.
Availability
R7FA0E1073CNK#AA0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart meter interfaces, medical wearables, and factory automation I/O modules requiring stable component supply, long-term lifecycle assurance, and automotive-grade reliability.
Supply support for R7FA0E1073CNK#AA0 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 markets.
The RA0E1 Group is designed for cost-sensitive, ultra-low-power embedded applications demanding functional safety and security - delivering Arm Cortex-M23 performance in compact packages with integrated safety mechanisms and seamless scalability across the RA family.
FAQ
What is the maximum operating frequency of the R7FA0E1073CNK#AA0?
The R7FA0E1073CNK#AA0 operates at a maximum frequency of 32 MHz using its Arm Cortex-M23 core. This speed is achievable with the high-speed on-chip oscillator (HOCO) or external crystal (MOSC), and is confirmed in the R01DS0427EJ0120 Rev.1.20 datasheet Section 1.1. The device maintains full peripheral functionality and safety features at this clock rate.
Does the R7FA0E1073CNK#AA0 support hardware-based security features?
Yes, the R7FA0E1073CNK#AA0 includes True Random Number Generator (TRNG) for cryptographic key generation, Flash Read Protection (FRP) with secure region definition, and register write protection via the Protect Register (PRCR). These features are documented in Sections 1.3 and 1.10 of the R01DS0427EJ0120 Rev.1.20 datasheet and support secure boot and firmware integrity verification.
How many analog input channels does the ADC12 support on the R7FA0E1073CNK#AA0?
The ADC12 module on the R7FA0E1073CNK#AA0 supports up to 10 analog input channels (AN000–AN007, AN021–AN022), as specified in Table 1.14 (Pin List) and Section 1.8 (Analog) of the R01DS0427EJ0120 Rev.1.20 datasheet. This count is consistent across all RA0E1 variants, including the 24-pin R7FA0E1073CNK#AA0 package.
What debug interface does the R7FA0E1073CNK#AA0 use, and which pins are required?
The R7FA0E1073CNK#AA0 uses Serial Wire Debug (SWD) with dedicated SWCLK (pin 16) and SWDIO (pin 17) pins, as shown in Figure 1.4 (HWQFN 24-pin pin assignment) and Table 1.13 of the R01DS0427EJ0120 Rev.1.20 datasheet. No JTAG interface is supported; SWD enables full-core debugging, flash programming, and trace with minimal pin count.
Is the R7FA0E1073CNK#AA0 qualified for extended temperature operation?
Yes, the R7FA0E1073CNK#AA0 is rated for operation from −40°C to +105°C ambient temperature, as stated in Section 1.1 (Operating Temperature and Packages) and Table 2.1 (Absolute Maximum Ratings) of the R01DS0427EJ0120 Rev.1.20 datasheet. This qualification applies specifically to the 24-pin HWQFN package (PWQN0024KG-A) used by the R7FA0E1073CNK#AA0.
R7FA0E1073CNK#AA0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 24-WFQFN Exposed Pad
- Series:
- RA0E1
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- -
- Core Processor:
- ARM® Cortex®-M23
- Core Size:
- 32-Bit
- Speed:
- 32MHz
- Connectivity:
- I2C, LINbus, SPI, UART/USART
- Peripherals:
- DMA, LVD, POR, PWM, Temp Sensor, TRNG, WDT
- Number of I/O:
- 20
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 1K x 8
- RAM Size:
- 12K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.6V ~ 5.5V
- Data Converters:
- A/D 8x12b SAR
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R7FA0E1073CNK#AA0 FAQ
1.How can I place an order for R7FA0E1073CNK#AA0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R7FA0E1073CNK#AA0 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 R7FA0E1073CNK#AA0 reliable?
The price and inventory of R7FA0E1073CNK#AA0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R7FA0E1073CNK#AA0 is usually 5 days.
3.What payment methods are accepted for R7FA0E1073CNK#AA0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R7FA0E1073CNK#AA0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R7FA0E1073CNK#AA0?
R7FA0E1073CNK#AA0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R7FA0E1073CNK#AA0 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 R7FA0E1073CNK#AA0?
For technical support, including R7FA0E1073CNK#AA0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R7FA0E1073CNK#AA0 requirements.
6.How does Aetrix verify that R7FA0E1073CNK#AA0 is sourced from the original manufacturer or authorized distributors?
All R7FA0E1073CNK#AA0 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 R7FA0E1073CNK#AA0 meets industry standards.
7.What is the process for return or replacement of R7FA0E1073CNK#AA0?
All R7FA0E1073CNK#AA0 units undergo pre-shipment inspection (PSI). If there is an issue with R7FA0E1073CNK#AA0, 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 R7FA0E1073CNK#AA0 part is unused and in its original packaging.
Return procedure for R7FA0E1073CNK#AA0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R7FA0E1073CNK#AA0 Tags
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ATTINY4-TSHR
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