Wi-Fi & Bluetooth module, Max. data rate of 72Mbps, LCC form factor, 20mm × 18mm × 2.6mm, Operating temperature range of -40°C to +85°C.

FC41D

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  • Supports Bluetooth 5.2 and Bluetooth pairing

  • Supports Wi-Fi (2.4 GHz), 1 × 1 SISO

  • Large memory, 256 KB RAM and 2/4 MB flsah

  • 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

Features
  • Supports Bluetooth 5.2 and Bluetooth pairing
  • Supports Wi-Fi (2.4 GHz), 1 × 1 SISO
  • Large memory, 256 KB RAM and 2/4 MB flsah
  • 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
View detail
Microcontroller (MCU) ARM968 (120 MHz)
Frequency Band 2.4GHz
WLAN Standard IEEE 802.11 b/g/n
BT Standard BT5.2
Form Factor  LCC
Dimensions (mm)  20.0 × 18.0 × 2.6
Operating Temperature -40° C ~ +85° C
Weight (approx.) g 1.51
General Features  
Function Wi-Fi 2.4G+ BLE5.2
ChipSet BK7231M
RAM 256KB
PSRAM /
Flash 2MB/ 4MB
Modulation Mode PSK/QPSK/CCK/16QAM/64QAM
Encryption Mode WPA-PSK/WPA2-PSK/WPA3-SAE
Operator Mode STA, AP
I/O Interfaces  
SDIO /
SPI QuecOpen® support
UART × 2
USB /
I2C QuecOpen® support
I2S /
ADC QuecOpen® support
PWM QuecOpen® support
GPIO QuecOpen® support
Antenna × 1(External pin antenna, IPEX antenna interface, PCB antenna optional)
Electrical Characteristics  
Supply Voltage Range VBAT: 3.0~ 3.6 V,
Typical value: 3.3V
Power Consumption IDLE: 23.27mA
Certifi cation CE/FCC/IC/RCM/SRRC/KC/ ANATEL/TELEC/BQB
Recommended Applications Smart home, Industrial Control

I. 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 2/4 MB flash, ensuring efficient performance. In addition, it complies with WPAPSK, 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.

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