Quectel EC21 Series User Manual

LTE Standard Module Series
EC21_Series_Hardware_Design
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Table Index
Table 1: Special Marks..............................................................................................................................................18
Table 2: Supported Frequency Bands and GNSS Function of EC21 Series Module.................................... 19
Table 3: Key Features of EC21 Series Module.................................................................................................... 20
Table 4: I/O Parameters Definition..........................................................................................................................27
Table 5: Pin Description............................................................................................................................................27
Table 6: Overview of Operating Modes..................................................................................................................37
Table 7: VBAT and GND Pins..................................................................................................................................41
Table 8: Pin Definition of PWRKEY........................................................................................................................ 44
Table 9: Pin Definition of RESET_N....................................................................................................................... 47
Table 10: Pin Definition of (U)SIM Interface..........................................................................................................48
Table 11: Pin Description of USB Interface........................................................................................................... 51
Table 12: Pin Definition of Main UART Interface..................................................................................................52
Table 13: Pin Definition of Debug UART Interface...............................................................................................53
Table 14: Pin Definition of PCM and I2C Interfaces............................................................................................ 56
Table 15: Pin Definition of SD Card Interface....................................................................................................... 57
Table 16: Pin Definition of Interfaces for WLAN & Bluetooth Applications...................................................... 58
Table 17: Pin Definition of ADC Interfaces............................................................................................................ 62
Table 18: Characteristic of ADC.............................................................................................................................. 62
Table 19: Pin Definition of SGMII Interface........................................................................................................... 63
Table 20: Pin Definition of Network Connection Status/Activity Indicator........................................................65
Table 21: Working State of Network Connection Status/Activity Indicator...................................................... 65
Table 22: Pin Definition of STATUS........................................................................................................................ 66
Table 23: Behaviors of RI......................................................................................................................................... 67
Table 24: Pin Definition of USB_BOOT Interface.................................................................................................67
Table 25: Pin Definition of RF Antennas................................................................................................................ 69
Table 26: Module Operating Frequencies............................................................................................................. 69
Table 27: RF Output Power......................................................................................................................................71
Table 28: EC21-E Conducted RF Receiving Sensitivity..................................................................................... 71
Table 29: EC21-A Conducted RF Receiving Sensitivity......................................................................................72
Table 30: EC21-V Conducted RF Receiving Sensitivity..................................................................................... 72
Table 31: EC21-AU Conducted RF Receiving Sensitivity.................................................................................. 73
Table 32: EC21-EU Conducted RF Receiving Sensitivity.................................................................................. 74
Table 33: EC21-AUT Conducted RF Receiving Sensitivity................................................................................ 74
Table 34: EC21-J Conducted RF Receiving Sensitivity...................................................................................... 75
Table 35: EC21-KL Conducted RF Receiving Sensitivity................................................................................... 75
Table 36: EC21-AUX Conducted RF Receiving Sensitivity................................................................................75
Table 37: EC21-EUX Conducted RF Receiving Sensitivity................................................................................76
Table 38: Pin Definition of GNSS Antenna Interface........................................................................................... 78
Table 39: GNSS Frequency..................................................................................................................................... 78
Table 40: GNSS Performance................................................................................................................................. 79
Table 41: Antenna Requirements............................................................................................................................83

Quectel EC21 Series Specifications

General

Brand	Quectel
Model	EC21 Series
Category	Control Unit
Language	English