Product Info

NB-IoT Module Series
BC660K-GL Hardware Design
BC660K-GL_Hardware_Design
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Figure Index
Figure 1: Functional Diagram.................................................................................................................................. 13
Figure 2: Pin Assignment......................................................................................................................................... 15
Figure 3: Module Power Consumption in Different Modes (Modem)............................................................... 21
Figure 4: Timing of Waking up Module from PSM............................................................................................... 22
Figure 5: Reference Circuit for Power Supply...................................................................................................... 23
Figure 6: Power-up Timing.......................................................................................................................................24
Figure 7: Power-down Timing..................................................................................................................................25
Figure 8: Reference Circuit of RESET_N by Using Driving Circuit...................................................................25
Figure 9: Reference Circuit of RESET_N by Using Button................................................................................ 26
Figure 10: Reference Circuit of BOOT by Using Button..................................................................................... 27
Figure 11: Reference Design for Main UART Port.............................................................................................. 28
Figure 12: Reference Design of Debug UART Port............................................................................................ 28
Figure 13: Reference Circuit Design of UART..................................................................................................... 29
Figure 14: Sketch Map for RS-232 Interface Match............................................................................................ 30
Figure 15: Reference Circuit with Transistor Circuit............................................................................................31
Figure 16: Reference Circuit for (U)SIM Interface with a 6-pin (U)SIM Card Connector..............................32
Figure 17: RI Behaviour When a URC is Received.............................................................................................34
Figure 18: Reference Design of NETLIGHT......................................................................................................... 35
Figure 19: Reference Design of NB-IoT Antenna Interface............................................................................... 38
Figure 20: Microstrip Design on a 2-layer PCB....................................................................................................38
Figure 21: Coplanar Waveguide Design on a 2-layer PCB................................................................................39
Figure 22: Coplanar Waveguide Design on a 4-layer PCB (Layer 3 as Reference Ground).......................39
Figure 23: Coplanar Waveguide Design on a 4-layer PCB (Layer 4 as Reference Ground).......................39
Figure 24: Dimensions of the U.FL-R-SMT Connector (Unit: mm)...................................................................43
Figure 25: Mechanicals of U.FL-LP Connectors.................................................................................................. 43
Figure 26: Space Factor of Mated Connector (Unit: mm).................................................................................. 44
Figure 27: BC660K-GL Top and Side Dimensions (Unit: mm)..........................................................................49
Figure 28: Module Bottom Dimension (Bottom View)......................................................................................... 50
Figure 29: Recommended Footprint (Unit: mm)...................................................................................................51
Figure 30: Top View of the Module.........................................................................................................................52
Figure 31: Bottom View of the Module...................................................................................................................52
Figure 32: Recommended Reflow Soldering Thermal Profile........................................................................... 54
Figure 33: Tape Dimensions (Unit: mm)................................................................................................................56
Figure 34: Reel Dimensions (Unit: mm)................................................................................................................ 56