Quectel EC25

LTE Module Series
EC25 Mini PCIe Hardware Design
EC25_Mini_PCIe_Hardware_Design Confidential / Released 3 / 42
Contents
About the Document ................................................................................................................................... 2
Contents ....................................................................................................................................................... 3
Table Index ................................................................................................................................................... 5
Figure Index ................................................................................................................................................. 6
1 Introduction .......................................................................................................................................... 7
1.1. Safety Information...................................................................................................................... 8
2 Product Concept .................................................................................................................................. 9
2.1. General Description ................................................................................................................... 9
2.2. Description of Product Series .................................................................................................. 10
2.3. Key Features ........................................................................................................................... 11
2.4. Functional Diagram ................................................................................................................. 13
3 Application Interface ......................................................................................................................... 14
3.1. General Description ................................................................................................................. 14
3.2. EC25 Mini PCIe Interface ........................................................................................................ 14
3.2.1. Definition of Interface ..................................................................................................... 14
3.2.2. Pin Assignment .............................................................................................................. 17
3.3. Power Supply ........................................................................................................................... 18
3.4. USIM Card Interface ................................................................................................................ 19
3.5. USB Interface .......................................................................................................................... 20
3.6. UART Interface ........................................................................................................................ 21
3.7. PCM and I2C Interfaces .......................................................................................................... 22
3.8. Control Signals ........................................................................................................................ 24
3.8.1. RI Signal ......................................................................................................................... 25
3.8.2. DTR Signal ..................................................................................................................... 25
3.8.3. W_DISABLE# Signal ...................................................................................................... 25
3.8.4. PERST# Signal .............................................................................................................. 25
3.8.5. LED_WWAN# Signal ..................................................................................................... 26
3.8.6. WAKE# Signal ................................................................................................................ 27
3.9. Antenna Interfaces .................................................................................................................. 27
4 Electrical and Radio Characteristics ............................................................................................... 29
4.1. General Description ................................................................................................................. 29
4.2. Power Supply Requirements ................................................................................................... 29
4.3. I/O Requirements ..................................................................................................................... 30
4.4. RF Characteristics ................................................................................................................... 30
4.5. GNSS Receiver ....................................................................................................................... 32
4.6. ESD Characteristics ................................................................................................................ 33
4.7. Current Consumption .............................................................................................................. 33
5 Dimensions and Packaging .............................................................................................................. 38
5.1. General Description ................................................................................................................. 38
Quectel
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