Quectel EC25-V - Page 7

LTE Module Series
EC25-V User Manual
EC25-V_User_Manual Confidential / Released 6 / 69
Figure Index
FIGURE 1: FUNCTIONAL DIAGRAM ........................................................................................................ 12
FIGURE 2: PIN ASSIGNMENT (TOP VIEW) ............................................................................................. 15
FIGURE 3: UART SLEEP APPLICATION .................................................................................................. 22
FIGURE 4: SLEEP APPLICATION WITH USB REMOTE WAKEUP ........................................................ 23
FIGURE 5: SLEEP APPLICATION WITH RI ............................................................................................. 24
FIGURE 6: SLEEP APPLICATION WITHOUT SUSPEND FUNCTION .................................................... 24
FIGURE 7: POWER SUPPLY LIMITS DURING TRANSMIT BURST ....................................................... 26
FIGURE 8: STAR STRUCTURE OF THE POWER SUPPLY .................................................................... 27
FIGURE 9: REFERENCE CIRCUIT OF POWER SUPPLY ....................................................................... 27
FIGURE 10: TURN ON THE MODULE USING DRIVING CIRCUIT ......................................................... 28
FIGURE 11: TURN ON THE MODULE USING KEYSTROKE .................................................................. 29
FIGURE 12: TIMING OF TURNING ON MODULE ................................................................................... 29
FIGURE 13: TIMING OF TURNING OFF MODULE .................................................................................. 30
FIGURE 14: REFERENCE CIRCUIT OF RESET_N BY USING DRIVING CIRCUIT .............................. 31
FIGURE 15: REFERENCE CIRCUIT OF RESET_N BY USING BUTTON .............................................. 31
FIGURE 16: TIMING OF RESETTING MODULE ...................................................................................... 32
FIGURE 17: REFERENCE CIRCUIT OF 8-PIN USIM CONNECTOR ...................................................... 33
FIGURE 18: REFERENCE CIRCUIT OF 6-PIN USIM CONNECTOR ...................................................... 33
FIGURE 19: REFERENCE CIRCUIT OF USB APPLICATION ................................................................. 35
FIGURE 20: REFERENCE CIRCUIT WITH TRANSLATOR CHIP............................................................ 37
FIGURE 21: REFERENCE CIRCUIT WITH TRANSISTOR CIRCUIT ...................................................... 38
FIGURE 22: PRIMARY MODE TIMING ..................................................................................................... 39
FIGURE 23: AUXILIARY MODE TIMING ................................................................................................... 39
FIGURE 24: REFERENCE CIRCUIT OF PCM APPLICATION WITH AUDIO CODEC ............................ 40
FIGURE 25: REFERENCE CIRCUIT OF THE NETWORK INDICATOR .................................................. 42
FIGURE 26: REFERENCE CIRCUIT OF THE STATUS............................................................................ 43
FIGURE 27: REFERENCE CIRCUIT OF ANTENNA INTERFACE ........................................................... 48
FIGURE 28: REFERENCE CIRCUIT OF GNSS ANTENNA ..................................................................... 49
FIGURE 29: DIMENSIONS OF THE UF.L-R-SMT CONNECTOR (UNIT: MM) ........................................ 50
FIGURE 30: MECHANICALS OF UF.L-LP CONNECTORS ..................................................................... 51
FIGURE 31: SPACE FACTOR OF MATED CONNECTOR (UNIT: MM) ................................................... 52
FIGURE 32: MODULE TOP AND SIDE DIMENSIONS ............................................................................. 56
FIGURE 33: MODULE BOTTOM DIMENSIONS (BOTTOM VIEW) ......................................................... 57
FIGURE 34: RECOMMENDED FOOTPRINT (TOP VIEW) ...................................................................... 58
FIGURE 35: TOP VIEW OF THE MODULE .............................................................................................. 59
FIGURE 36: BOTTOM VIEW OF THE MODULE ...................................................................................... 59
FIGURE 37: LIQUIDS TEMPERATURE .................................................................................................... 61
FIGURE 38: CARRIER TAPE .................................................................................................................... 62