Quectel BC68 User Manual

GSM/GPRS/NB-IoT Module Series
BC68&M66 Compatible Design
BC68&M66_Compatible_Design 5 / 31
Figure Index
FIGURE 1: BC68&M66 PIN ASSIGNMENT ...................................................................................................... 10
FIGURE 2: REFERENCE CIRCUIT OF POWER SUPPLY .............................................................................. 14
FIGURE 3: REFERENCE CIRCUIT OF VBAT .................................................................................................. 15
FIGURE 4: DRIVING CIRCUIT OF THE PWRKEY ........................................................................................... 15
FIGURE 5: TIMING OF POWER-ON SCENARIO ............................................................................................ 16
FIGURE 6: TIMING OF POWER-DOWN THROUGH AT COMMAND .............................................................. 17
FIGURE 7: TIMING OF POWER-DOWN FOR M66 BY PWRKEY ................................................................... 17
FIGURE 8: REFERENCE CIRCUIT OF RESET BY USING DRIVING CIRCUIT ............................................. 18
FIGURE 9: TIMING OF RESETTING MODULE ............................................................................................... 18
FIGURE 10: REFERENCE CIRCUIT OF NETLIGHT ....................................................................................... 19
FIGURE 11: REFERENCE CIRCUIT OF (U)SIM CARD INTERFACE WITH A 6-PIN (U)SIM CARD
CONNECTOR ............................................................................................................................................ 19
FIGURE 12: REFERENCE DESIGN OF M66 UART INTERFACE ................................................................... 20
FIGURE 13: REFERENCE DESIGN OF BC68 UART INTERFACE FOR 3.3V SYSTEM ................................ 21
FIGURE 14: REFERENCE CIRCUIT OF RF INTERFACE ............................................................................... 22
FIGURE 15: BOTTOM VIEW OF BC68/M66 .................................................................................................... 23
FIGURE 16: RECOMMENDED FOOTPRINT OF BC68/M66 (UNIT: MM) ....................................................... 24
FIGURE 17: RECOMMENDED STENCIL DESIGN FOR BC68 (UNIT: MM) .................................................... 25
FIGURE 18: RECOMMENDED STENCIL DESIGN FOR M66 (UNIT: MM) ...................................................... 26
FIGURE 19: INSTALLATION SKETCH MAP FOR BC68/M66 .......................................................................... 27
FIGURE 20: REFLOW SOLDERING THERMAL PROFILE .............................................................................. 28
FIGURE 21: TAPE DIMENSIONS ..................................................................................................................... 29
FIGURE 22: REEL DIMENSIONS ..................................................................................................................... 29

Quectel BC68 Specifications

General

Brand	Quectel
Model	BC68
Category	Control Unit
Language	English