Specifications

L70 Hardware Design
L70_HD_V1.0 - 5 -
Figure Index
FIGURE 1: MODULE BLOCK DIAGRAM ......................................................................................... 10
FIGURE 2: ALWAYSLOCATE
TM
MODE ............................................................................................. 12
FIGURE 3: REFERENCE RESET CIRCUIT USING OC CIRCUIT ................................................... 17
FIGURE 4: REFERENCE RESET CIRCUIT USING BUTTON .......................................................... 17
FIGURE 5: TIMING OF RESTARTING SYSTEM .............................................................................. 18
FIGURE 6: RTC SUPPLY FROM NON-CHARGEABLE BATTERY OR CAPACITOR .................... 19
FIGURE 7: REFERENCE CHARGING CIRCUIT FOR CHARGEABLE BATTERY ........................ 19
FIGURE 8: SEIKO XH414H-IV01E CHARGE CHARACTERISTIC ................................................. 20
FIGURE 9: PERIODIC MODE ............................................................................................................. 20
FIGURE 10: CONNECTION OF SERIAL INTERFACES ................................................................... 21
FIGURE 11: RS-232 LEVEL SHIFT CIRCUIT .................................................................................... 22
FIGURE 12: ANTON CONTROL CIRCUIT ........................................................................................ 23
FIGURE 13: TIMING OF EXTINT0 AND ANTON ............................................................................. 23
FIGURE 14: REFERENCE DESIGN FOR PASSIVE ANTENNA WITH LNA ................................... 25
FIGURE 15: REFERENCE DESIGN FOR ACTIVE ANTENNA WITHOUT LNA ............................ 26
FIGURE 16: REFERENCE DESIGN FOR ACTIVE ANTENNA WITH LNA .................................... 26
FIGURE 17: L70 TOP VIEW AND SIDE VIEW（UNIT:MM） ......................................................... 30
FIGURE 18: L70 BOTTOM DIMENSION（UNIT:MM） .................................................................. 30
FIGURE 19: FOOTPRINT OF RECOMMENDATION（UNIT:MM） ............................................... 31
FIGURE 20: TOP VIEW OF THE MODULE ....................................................................................... 31
FIGURE 21: BOTTOM VIEW OF THE MODULE .............................................................................. 32
FIGURE 22: RAMP-SOAK-SPIKE-REFLOW OF FURNACE TEMPERATURE .............................. 33
FIGURE 23: TAPE AND REEL SPECIFICATION ............................................................................... 34
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