User's Manual
Wi-Fi&Bluetooth Module Series
FC41D_Hardware_Design
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Figure Index
Figure 1: Pin Assignment (Top View) ................................................................................................................ 13
Figure 2: VBAT Reference Circuit ..................................................................................................................... 17
Figure 3: Reference Circuit of CEN by Using Driving Circuit ............................................................................ 18
Figure 4: Reference Circuit of CEN by Using Button ........................................................................................ 18
Figure 5: Timing of Resetting Module ................................................................................................................ 19
Figure 6: Main UART Connection Diagram ....................................................................................................... 20
Figure 7: Debug UART Reference Crcuit .......................................................................................................... 20
Figure 8: SPI Timing .......................................................................................................................................... 21
Figure 9: Reference Circuit of the Network Status Indicator ............................................................................. 24
Figure 10: IPEX Connector Size ........................................................................................................................ 27
Figure 11: RF Antenna Reference Design ........................................................................................................ 28
Figure 12: keepout areas on the motherboard .................................................................................................. 28
Figure 13: Microstrip Design on a 2-layer PCB ................................................................................................. 29
Figure 14: Coplanar Waveguide Design on a 2-layer PCB ............................................................................... 29
Figure 15: Coplanar Waveguide Design on a 4-layer PCB (Layer 3 as Reference Ground) ............................ 29
Figure 16: Coplanar Waveguide Design on a 4-layer PCB (Layer 4 as Reference Ground) ............................ 30
Figure 17: U.FL-R-SMT Connector (Unit: mm) .................................................................................................. 32
Figure 18: U. FL-LP Series Connectors ............................................................................................................ 32
Figure 19: Connectors and Connector Combinations (Unit: mm) ..................................................................... 33
Figure 20: Module Top and Side Dimensions ................................................................................................... 39
Figure 21: Module Dimension (Bottom View) .................................................................................................... 40
Figure 22: Recommeded Footprint (Top View) ................................................................................................. 41
Figure 23: Recommended Reflow Soldering Thermal Profile ........................................................................... 43
Figure 24: Tap Specification .............................................................................................................................. 45
Figure 25: Reel Specification ............................................................................................................................. 45