Specifications

Smart Machine Smart Decision
SIM7080G _Hardware Design _V1.03 6 2019-12-13
Figure Index
Figure 1: SIM7080G block diagram .................................................................................................................. 11
Figure 2: Pin assignment overview .................................................................................................................... 13
Figure 3: Dimensions (Unit: mm) ...................................................................................................................... 19
Figure 4: Footprint recommendation (Unit: mm) ............................................................................................... 20
Figure 5: Power supply application circuit......................................................................................................... 21
Figure 6: power supply reference circuit ............................................................................................................ 22
Figure 7: Reference power on/off circuit ........................................................................................................... 24
Figure 8: Power on timing sequence .................................................................................................................. 24
Figure 9: Power off timing sequence ................................................................................................................. 26
Figure 10: UART full modem ............................................................................................................................ 27
Figure 11: UART null modem............................................................................................................................ 28
Figure 12: Reference circuit of level shift .......................................................................................................... 28
Figure 13: RI behaviour（SMS and URC report） ........................................................................................... 29
Figure 14: USB reference circuit ....................................................................................................................... 30
Figure 15: SIM interface reference circuit ......................................................................................................... 31
Figure 16: PCM_SYNC timing .......................................................................................................................... 32
Figure 17: External codec to module timing ...................................................................................................... 32
Figure 18: Module to external codec timing ...................................................................................................... 33
Figure 19: Audio codec reference circuit ........................................................................................................... 34
Figure 20: I2C reference circuit ......................................................................................................................... 34
Figure 21: SPI master mode circuit .................................................................................................................... 35
Figure 22: SPI slave mode circuit ...................................................................................................................... 35
Figure 23: NETLIGHT reference circuit ............................................................................................................ 36
Figure 24：Power on sequence of the VDD_EXT ............................................................................................ 37
Figure 25：RFGRFC interface reference circuit ............................................................................................... 38
Figure 26: Antenna matching circuit (MAIN_ANT) .......................................................................................... 44
Figure 27: Active antenna circuit ....................................................................................................................... 45
Figure 28: Passive antenna circuit (Default) ...................................................................................................... 46
Figure 29: RF trace should be far away from other high speed signal lines ....................................................... 47
Figure 30: The distance between GND to the inner conductor of SMA ............................................................. 48
Figure 31: e-DRX diagrammatic sketch ............................................................................................................. 53
Figure 32: Top and bottom view of SIM7080G ................................................................................................. 58
Figure 33: Label information ............................................................................................................................. 59
Figure 34: The ramp-soak-spike reflow profile of SIM7080G ........................................................................... 60
Figure 35: stencilrecommendation (Unit: mm) .................................................................................................. 63
Figure 36: packaging diagram ............................................................................................................................ 64
Figure 37: Tray drawing ..................................................................................................................................... 64
Figure 38: Small carton drawing ........................................................................................................................ 65
Figure 39: Big carton drawing ........................................................................................................................... 65
Figure 40: Reference design .............................................................................................................................. 67