Quectel EC21 Mini PCIe Series, Hardware Design

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LTE Standard Module Series
EC21 Mini PCIe Hardware Design
EC21_Mini_PCIe_Hardware_Design 7 / 67
Table Index
TABLE 1: DESCRIPTION OF EC21 MINI PCIE ................................................................................................ 13
TABLE 2: KEY FEATURES OF EC21 MINI PCIE ............................................................................................. 14
TABLE 3: I/O PARAMETERS DEFINITION ....................................................................................................... 19
TABLE 4: PIN DESCRIPTION ........................................................................................................................... 19
TABLE 5: OVERVIEW OF OPERATING MODES ............................................................................................. 22
TABLE 6: PIN DEFINITION OF VCC_3V3 AND GND PINS ............................................................................. 23
TABLE 7: PIN DEFINITION OF (U)SIM INTERFACE ....................................................................................... 24
TABLE 8: PIN DEFINITION OF USB INTERFACE ........................................................................................... 26
TABLE 9: PIN DEFINITION OF MAIN UART INTERFACE ............................................................................... 28
TABLE 10: PIN DEFINITION OF PCM AND I2C INTERFACES ....................................................................... 29
TABLE 11: PIN DEFINITION OF CONTROL AND INDICATION SIGNALS ...................................................... 31
TABLE 12: AIRPLANE MODE CONTROLLED BY HARDWARE METHOD ..................................................... 32
TABLE 13: AIRPLANE MODE CONTROLLED BY SOFTWARE METHOD ..................................................... 33
TABLE 14: INDICATIONS OF NETWORK STATUS (AT+QCFG="LEDMODE",0, DEFAULT SETTING) ......... 34
TABLE 15: INDICATIONS OF NETWORK STATUS (AT+QCFG="LEDMODE",2) ........................................... 34
TABLE 16: GNSS PERFORMANCE ................................................................................................................. 36
TABLE 17: GNSS FREQUENCY ....................................................................................................................... 37
TABLE 18: OPERATING FREQUENCIES ........................................................................................................ 38
TABLE 19: ANTENNA REQUIREMENTS .......................................................................................................... 39
TABLE 20: POWER SUPPLY REQUIREMENTS .............................................................................................. 42
TABLE 21: I/O REQUIREMENTS ...................................................................................................................... 43
TABLE 22: CONDUCTED RF OUTPUT POWER OF EC21 MINI PCIE ........................................................... 43
TABLE 23: CONDUCTED RF RECEIVING SENSITIVITY OF EC21-E MINI PCIE .......................................... 44
TABLE 24: CONDUCTED RF RECEIVING SENSITIVITY OF EC21-A MINI PCIE .......................................... 44
TABLE 25: CONDUCTED RF RECEIVING SENSITIVITY OF EC21-V MINI PCIE .......................................... 45
TABLE 26: CONDUCTED RF RECEIVING SENSITIVITY OF EC21-AUT MINI PCIE ..................................... 45
TABLE 27: CONDUCTED RF RECEIVING SENSITIVITY OF EC21-KL MINI PCIE ........................................ 45
TABLE 28: CONDUCTED RF RECEIVING SENSITIVITY OF EC21-J MINI PCIE .......................................... 46
TABLE 29: CONDUCTED RF RECEIVING SENSITIVITY OF EC21-AU MINI PCIE ....................................... 46
TABLE 30: CONDUCTED RF RECEIVING SENSITIVITY OF EC21-EU MINI PCIE ....................................... 47
TABLE 31: CONDUCTED RF RECEIVING SENSITIVITY OF EC21-EC MINI PCIE ....................................... 47
TABLE 32: CONDUCTED RF RECEIVING SENSITIVITY OF EC21-AUX MINI PCIE ..................................... 48
TABLE 33: ESD CHARACTERISTICS OF EC21 MINI PCIE ............................................................................ 49
TABLE 34: CURRENT CONSUMPTION OF EC21-A MINI PCIE ..................................................................... 49
TABLE 35: CURRENT CONSUMPTION OF EC21-V MINI PCIE ..................................................................... 50
TABLE 36: CURRENT CONSUMPTION OF EC21-KL MINI PCIE ................................................................... 51
TABLE 37: CURRENT CONSUMPTION OF EC21-AUX MINI PCIE ................................................................ 51
TABLE 38: CURRENT CONSUMPTION OF EC21-EU MINI PCIE .................................................................. 54
TABLE 39: CURRENT CONSUMPTION OF EC21-AU MINI PCIE .................................................................. 56
TABLE 40: CURRENT CONSUMPTION OF EC21-J MINI PCIE ...................................................................... 59
TABLE 41: GNSS CURRENT CONSUMPTION OF EC21 MINI PCIE SERIES MODULE ............................... 60