SimCom SIM68R Hardware Design page 6

Smart Machine Smart Decision
Figure Index
FIGURE 1: SIM68R FUNCTIONAL DIAGRAM............................................................................................................. 9
FIGURE 2: SIM68R PIN OUT DIAGRAM (TOP VIEW) .............................................................................................. 12
FIGURE 3: SIM68R MECHANICAL DIMENSIONS (UNIT: MM) .............................................................................. 14
FIGURE 4: RECOMMENDED PCB DECAL (TOP VIEW) (UNIT: MM)..................................................................... 15
FIGURE 5: SIM68R PASSIVE ANTENNA DESIGN ..................................................................................................... 21
FIGURE 6: SIM68R PASSIVE ANTENNA DESIGN (WITH EXTERNAL LNA AND SAW) ..................................... 21
FIGURE 7: SIM68R PASSIVE ANTENNA DESIGN FOR BEST PERFORMANCE ................................................... 22
FIGURE 8: SIM68R ACTIVE ANTENNA DESIGN ...................................................................................................... 22
FIGURE 9: INTERNAL SUPPLY ANTENNA BIAS VOLTAGE ................................................................................... 23
FIGURE 10: EXTERNAL SUPPLY ANTENNA BIAS VOLTAGE................................................................................ 23
FIGURE 11: OPEN CIRCUIR DETECTION-A.............................................................................................................. 24
FIGURE 12: OPEN CIRCUIR DETECTION-B .............................................................................................................. 25
FIGURE 13: TOP AND BOTTOM VIEW OF SIM68R .................................................................................................. 28
FIGURE 14: THE RAMP-SOAK-SPIKE REFLOW PROFILE OF SIM68R ................................................................. 29
FIGURE 15: EXAMPLE APPLICATION SCHEMATIC WITH UART ......................................................................... 31
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SIM68R_Hardware Design_V1.02 2013-01-22