User's Manual

Wi-Fi&Bluetooth Module Series
FC41D_Hardware_Design
4 / 46
Contents
Safety Information .................................................................................................................................... 2
About the Document ................................................................................................................................ 3
Contents .................................................................................................................................................... 4
Table Index ................................................................................................................................................ 6
Figure Index .............................................................................................................................................. 7
1 Introduction ....................................................................................................................................... 8
1.1. Special Mark ............................................................................................................................. 8
2 Product Concept ............................................................................................................................... 9
2.1. General Description .................................................................................................................. 9
2.2. Key Features ............................................................................................................................ 9
2.3. Evaluation Board .................................................................................................................... 11
3 Application Interfaces ..................................................................................................................... 12
3.1. General Description ................................................................................................................ 12
3.2. Pin Assignment....................................................................................................................... 13
3.3. Pin Description ....................................................................................................................... 14
3.4. Power Supply Design ............................................................................................................. 17
3.4.1. Pin Description ............................................................................................................. 17
3.5. Reset the module ................................................................................................................... 18
3.6. Wireless Connection Interfaces .............................................................................................. 19
3.6.1. UART ........................................................................................................................... 19
3.6.2. SPI ............................................................................................................................... 20
3.7. I2C Interface ........................................................................................................................... 22
3.8. PWM Interface* ...................................................................................................................... 22
3.9. WAKEUP Interface ................................................................................................................. 23
3.10. Network Status Indication ....................................................................................................... 23
3.11. GPIO Interfaces ...................................................................................................................... 24
3.12. ADC Interface*........................................................................................................................ 24
3.13. RF Antenna Interface ............................................................................................................. 25
3.13.1. Operating Frequency ................................................................................................... 25
3.13.2. RF Antenna Pin Description ......................................................................................... 26
3.13.3. On Board PCB Antenna ............................................................................................... 26
3.13.4. IPEX Connector ........................................................................................................... 27
3.13.5. RF Antenna Reference Design .................................................................................... 27
3.13.6. Reference Design of RF Layout ................................................................................... 28
3.13.7. Antenna Cable and Antenna Requirements ................................................................ 30
3.14. Recommended RF Connector for Antenna Installation .......................................................... 31
4 Reliability, Radio and Electrical Characteristics .......................................................................... 34
4.1. General Description ................................................................................................................ 34
4.2. Electrical Characteristics ........................................................................................................ 34