Product Info

LTE Standard Module Series
EC21 Hardware Design
EC21_Hardware_Design 9 / 120
Table Index
TABLE 1: FREQUENCY BANDS OF EC21 SERIES MODULE ........................................................................ 18
TABLE 2: KEY FEATURES OF EC21 MODULE ............................................................................................... 19
TABLE 3: I/O PARAMETERS DEFINITION ....................................................................................................... 26
TABLE 4: PIN DESCRIPTION ........................................................................................................................... 26
TABLE 5: OVERVIEW OF OPERATING MODES ............................................................................................. 38
TABLE 6: VBAT AND GND PINS ....................................................................................................................... 42
TABLE 7: PIN DEFINITION OF PWRKEY ........................................................................................................ 45
TABLE 8: PIN DEFINITION OF RESET_N ....................................................................................................... 48
TABLE 9: PIN DEFINITION OF (U)SIM INTERFACE ....................................................................................... 50
TABLE 10: PIN DESCRIPTION OF USB INTERFACE ..................................................................................... 52
TABLE 11: PIN DEFINITION OF MAIN UART INTERFACE ............................................................................. 53
TABLE 12: PIN DEFINITION OF DEBUG UART INTERFACE ......................................................................... 54
TABLE 13: LOGIC LEVELS OF DIGITAL I/O .................................................................................................... 54
TABLE 14: PIN DEFINITION OF PCM AND I2C INTERFACES ....................................................................... 57
TABLE 15: PIN DEFINITION OF SD CARD INTERFACE ................................................................................ 58
TABLE 16: PIN DEFINITION OF WIRELESS CONNECTIVITY INTERFACES ................................................ 60
TABLE 17: PIN DEFINITION OF ADC INTERFACES ....................................................................................... 63
TABLE 18: CHARACTERISTIC OF ADC .......................................................................................................... 63
TABLE 19: PIN DEFINITION OF SGMII INTERFACE ...................................................................................... 64
TABLE 20: PIN DEFINITION OF NETWORK CONNECTION STATUS/ACTIVITY INDICATOR ...................... 66
TABLE 21: WORKING STATE OF NETWORK CONNECTION STATUS/ACTIVITY INDICATOR ................... 66
TABLE 22: PIN DEFINITION OF STATUS ........................................................................................................ 67
TABLE 23: BEHAVIORS OF RI ......................................................................................................................... 68
TABLE 24: PIN DEFINITION OF USB_BOOT INTERFACE ............................................................................. 69
TABLE 25: GNSS PERFORMANCE ................................................................................................................. 71
TABLE 26: PIN DEFINITION OF RF ANTENNAS ............................................................................................. 73
TABLE 27: MODULE OPERATING FREQUENCIES ........................................................................................ 73
TABLE 28: PIN DEFINITION OF GNSS ANTENNA INTERFACE ..................................................................... 77
TABLE 29: GNSS FREQUENCY ....................................................................................................................... 78
TABLE 30: ANTENNA REQUIREMENTS .......................................................................................................... 79
TABLE 31: ABSOLUTE MAXIMUM RATINGS .................................................................................................. 82
TABLE 32: POWER SUPPLY RATINGS ........................................................................................................... 83
TABLE 33: OPERATION AND STORAGE TEMPERATURES .......................................................................... 83
TABLE 34: EC21-E CURRENT CONSUMPTION ............................................................................................. 84
TABLE 35: EC21-A CURRENT CONSUMPTION ............................................................................................. 86
TABLE 36: EC21-V CURRENT CONSUMPTION ............................................................................................. 87
TABLE 37: EC21-AUT CURRENT CONSUMPTION ........................................................................................ 87
TABLE 38: EC21-AUV CURRENT CONSUMPTION ........................................................................................ 88
TABLE 39: EC21-J CURRENT CONSUMPTION .............................................................................................. 89
TABLE 40: EC21-KL CURRENT CONSUMPTION ........................................................................................... 90
TABLE 41: EC21-EU CURRENT CONSUMPTION ........................................................................................... 91