EnglishFC41D Development Guide
Module Overview
FC41D is a cutting-edge MCU Wi-Fi and Bluetooth module launched by Quectel. It boasts a high-performance processor with a frequency of up to 120 MHz and supports IEEE 802.11b/g/n protocol and Bluetooth 5.2. The module features built-in 256 KB RAM and 2 MB/4 MB flash, ensuring efficient performance. In addition, it complies with WPA-PSK, WPA2-PSK and WPA3-SAE security standards.
FC41D is in an LCC form factor with an ultra-compact package size of 20.0 mm × 18.0 mm × 2.6 mm, which optimizes the size and cost for end-products and is compatible with diverse designs.
FC41D supports multiple interfaces including UART, SPI, I2C, ADC and PWM, and many low power consumption modes and keep-alive mechanism, which provide flexibility and versatility for a range of applications, especially in smart homes and industrial IoT scenarios.
FC41D supports the QuecOpen® solution and standard AT commands, has a compact protocol stack. FC41D supports a variety of public cloud services, and can realize efficient product development for customers.
Key Features
- Wi-Fi 4 module, single band (2.4 GHz) Wi-Fi, 1 × 1 antenna
- Bluetooth 5.2 and Bluetooth pairing
- Large memory, 256 KB RAM and 2 MB/4 MB flash
- Supports up to 19 GPIOs for UART, SPI, I2C, ADC and PWM functions in QuecOpen® solution
- 4th generation RF coaxial connector, external antenna pin, PCB antenna (optional)
- High stability, high reliability and full compatibility
| Feature | FC41D | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| WLAN Protocol | IEEE 802.11b/g/n | |||||||||||||||||||||
| Wi‑Fi Frequency Band | 2.4 GHz | |||||||||||||||||||||
| Wi‑Fi Modulation Mode | BPSK/ QPSK/ CCK/ 16QAM/ 64QAM | |||||||||||||||||||||
| Wi‑Fi Operating Mode | AP/ STA | |||||||||||||||||||||
| Bluetooth Protocol | Bluetooth 5.2 | |||||||||||||||||||||
| Encryption | WPA-PSK/ WPA2-PSK/ WPA3-SAE | |||||||||||||||||||||
| Internet Protocol | IPv6 (Only supported in QuecOpen® solution) | |||||||||||||||||||||
| Kernel | ARM968 (up to 120 MHz) | |||||||||||||||||||||
| SRAM | 256 KB | |||||||||||||||||||||
| Flash | 2 MB/ 4 MB | |||||||||||||||||||||
| Dimensions | 20.0 mm × 18.0 mm × 2.6 mm | |||||||||||||||||||||
| Weight | 1.51 g | |||||||||||||||||||||
| Temperature Range | ||||||||||||||||||||||
| Operating Temperature Range | -40 °C to +85 °C | |||||||||||||||||||||
| Storage Temperature Range | -45 °C to +95 °C | |||||||||||||||||||||
| Certification | ||||||||||||||||||||||
| Regulatory | Europe: CE America: FCC Canada: IC Brazil: Anatel China: SRRC Australia/New Zealand: RCM South Korea: KC Japan: TELEC |
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| Others | Bluetooth | |||||||||||||||||||||
| Interfaces | ||||||||||||||||||||||
| Antenna (Interface) | × 1 (4th generation RF coaxial connector, external antenna pin, PCB antenna) (optional) | |||||||||||||||||||||
| Other Interfaces | UART/ SPI/ I2C/ PWM/ ADC | |||||||||||||||||||||
| Electrical Features | ||||||||||||||||||||||
| Power Supply Voltage | 3.0–3.6 V, Typ. 3.3 V | |||||||||||||||||||||
| Wi‑Fi Performance (2.4 GHz) | ||||||||||||||||||||||
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| Bluetooth Performance | ||||||||||||||||||||||
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| Ordering Code | Flash | Operating Temperature Range | Antenna | Development Board (Only for Debugging) |
|---|---|---|---|---|
| FC41DAEMD | 2 MB | -40 °C to +85 °C | External antenna pin | FC41DAATB-KIT |
| FC41DAFMD | 2 MB | -40 °C to +85 °C | 4th generation RF coaxial connector | - |
| FC41DAGMD | 2 MB | -40 °C to +85 °C | PCB antenna | FC41DAGTB |
| FC41DAHMD | 4 MB | -40 °C to +85 °C | PCB antenna | FC41DAHTB |
Quick Start Resources
Documentation & Guides
| Resource | Description | Link |
|---|---|---|
| TE-B User Guide | Hardware setup and pin configuration guide | View Guide |
| QuecPlatform Usage Guide | Development environment setup tutorial | QuecPlatform |
| Hardware Design Guide | PCB design and antenna placement guidelines | Hardware Design |
Code & Development
| Resource | Description | Link |
|---|---|---|
| Source Code | Complete SDK with examples and drivers | GitHub Repository |
| QuecOpen Development Quick Start | Custom application development tutorial | QuecOpen(SDK) Guide |
| RTOS Development Guide | Real-time operating system integration and programming guide | RTOS_QuecOpen(SDK) |
| Wi-Fi Development Guide | Wi-Fi API Guides and demos | Wi-Fi_QuecOpen(SDK) |
| BLE Development Guide | BLE API Guides and demos | BLE_QuecOpen(SDK) |
| General API Development Guide | General API Guides and demos | General_API_QuecOpen(SDK) |
| Peripheral Interface Development Guide | Peripheral API Guides and demos | Peripheral_API_QuecOpen(SDK) |
Video Resources
| Resource | Description | Link |
|---|---|---|
| Unboxing Video | Module unboxing and development environment setup | Unboxing Video |
| Power Consumption Analysis | Low-power consumption test | Power Consumption Demonstration |
Technical Resources
Software Resources
| Category | Package | Description | Link |
|---|---|---|---|
| Tools | Flash Tools | Firmware programming utilities | BKFIL |
| Firmware | Latest Firmware | Production firmware releases | AT Firmware |
Technical Support
Need Additional Development Support?
Contact Quectel Technical Team
- 📧 Email: support@quectel.com
- 🌐 Website: www.quectel.com
- 💬 Technical Forum: forums.quectel.com
Our technical team provides comprehensive support for custom development needs, integration assistance, and troubleshooting guidance.