Telit Wireless Solutions LE910Cx - Page 12

LE910Cx Hardware User Guide
1VV0301298 Rev. 1.05 - 2017-06-18
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List of Figures
Figure 1: LE910Cx Block Diagram ..................................................................................................... 21
Figure 2: LGA Pads Layout ................................................................................................................ 41
Figure 3: LE910Cx vs. LE910 Pin-out Comparison (top view) ........................................................... 42
Figure 4: Power-on Circuit ................................................................................................................ 48
Figure 5: LE910Cx Initialization and Activation ................................................................................ 49
Figure 6: Shutdown by Software Command ..................................................................................... 50
Figure 7: Hardware Shutdown .......................................................................................................... 51
Figure 8: Circuit for Unconditional Hardware Shutdown ................................................................. 52
Figure 9 Power down timing using HW_SHUTDOWN_N ................................................................. 52
Figure 10: Example of Linear Regulator with 5V Input ..................................................................... 57
Figure 11: Example of Switching Regulator with 12V Input – Part 1 ................................................ 58
Figure 12: Example of Switching Regulator with 12V Input – Part 2 ................................................ 58
Figure 13: RS232 Level Adaption Circuitry Example ......................................................................... 74
Figure 14: RS232 Serial Port Lines Connection Layout ..................................................................... 75
Figure 15: SPI Signal Connectivity ..................................................................................................... 76
Figure 16: SD/MMC Interface Connectivity ...................................................................................... 78
Figure 17: Primary PCM Timing ........................................................................................................ 82
Figure 18: Auxiliary PCM Timing ....................................................................................................... 84
Figure 19: GPIO Output Pad Equivalent Circuit ................................................................................ 89
Figure 20: Status LED Reference Circuit ........................................................................................... 90
Figure 21: LE910Cx Mechanical Dimensions (bottom view) ............................................................ 94
Figure 22: LE910Cx Mechanical Dimensions (Top view) .................................................................. 95
Figure 23: LE910Cx Mechanical Dimensions (Side view) .................................................................. 96
Figure 24: Recommended Footprint - Top View, 181 pads (dimensions are in mm, top view). ...... 97
Figure 25: PCB Pad Design ................................................................................................................ 98
Figure 26: PCB Pad Dimensions ........................................................................................................ 99
Figure 27: Solder Reflow Profile ..................................................................................................... 100
Figure 28: SIM Schematics .............................................................................................................. 104
Figure 29: Packing ........................................................................................................................... 107
Figure 30: Tray Drawing .................................................................................................................. 108
Figure 31: Module Positioning into the Carrier .............................................................................. 109
Figure 32: Carrier Tape Detail ......................................................................................................... 109
Figure 33: Reel Detail ...................................................................................................................... 110
Figure 34: Reel Box Detail ............................................................................................................... 111