User's Guide

LE910Cx Hardware User Guide
1VV0301298 Rev. 1.04 - 2017-05-25
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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 ..................................................................... 56
Figure 11: Example of Switching Regulator with 12V Input – Part 1 ................................................ 57
Figure 12: Example of Switching Regulator with 12V Input – Part 2 ................................................ 57
Figure 13: RS232 Level Adaption Circuitry Example ......................................................................... 73
Figure 14: RS232 Serial Port Lines Connection Layout ..................................................................... 74
Figure 15: SPI Signal Connectivity ..................................................................................................... 75
Figure 16: SD/MMC Interface Connectivity ...................................................................................... 77
Figure 17: Primary PCM Timing ........................................................................................................ 81
Figure 18: Auxiliary PCM Timing ....................................................................................................... 83
Figure 19: GPIO Output Pad Equivalent Circuit ................................................................................ 88
Figure 20: Status LED Reference Circuit ........................................................................................... 89
Figure 21: LE910Cx Mechanical Dimensions (bottom view) ............................................................ 93
Figure 22: LE910Cx Mechanical Dimensions (Top view) .................................................................. 94
Figure 23: LE910Cx Mechanical Dimensions (Side view) .................................................................. 95
Figure 24: Recommended Footprint - Top View, 181 pads (dimensions are in mm, top view). ...... 96
Figure 25: PCB Pad Design ................................................................................................................ 97
Figure 26: PCB Pad Dimensions ........................................................................................................ 98
Figure 27: Solder Reflow Profile ....................................................................................................... 99
Figure 28: SIM Schematics .............................................................................................................. 103
Figure 29: Packing ........................................................................................................................... 106
Figure 30: Tray Drawing .................................................................................................................. 107
Figure 31: Module Positioning into the Carrier .............................................................................. 108
Figure 32: Carrier Tape Detail ......................................................................................................... 108
Figure 33: Reel Detail ...................................................................................................................... 109
Figure 34: Reel Box Detail ............................................................................................................... 110