Contents
About the Document ................................................................................................................................... 2
Contents ....................................................................................................................................................... 3
Table Index ................................................................................................................................................... 6
Figure Index ................................................................................................................................................. 7
1
Introduction .......................................................................................................................................... 9
1.1.
Safety Information.................................................................................................................... 10
2
Product Concept ................................................................................................................................ 11
2.1.
General Description ................................................................................................................. 11
2.2.
Directives and Standards ......................................................................................................... 11
2.2.1.
FCC Statement ............................................................................................................... 12
2.2.2.
2.3.
Key Features ........................................................................................................................... 12
2.4.
Functional Diagram ................................................................................................................. 15
2.5.
Evaluation Board ..................................................................................................................... 16
3
Application Interface ......................................................................................................................... 17
3.1.
General Description ................................................................................................................. 17
3.2.
Pin Assignment ........................................................................................................................ 18
3.3.
Pin Description ......................................................................................................................... 19
3.4.
Operating Modes ..................................................................................................................... 25
3.5.
Power Saving ........................................................................................................................... 25
3.5.1.
Sleep Mode .................................................................................................................... 25
3.5.1.1.
3.5.1.2.
3.5.1.3.
3.5.2.
Airplane Mode ................................................................................................................ 28
3.6.
Power Supply ........................................................................................................................... 29
3.6.1.
Power Supply Pins ......................................................................................................... 29
3.6.2.
Decrease Voltage Drop .................................................................................................. 29
3.6.3.
3.6.4.
Monitor the Power Supply .............................................................................................. 31
3.7.
Turn on and off Scenarios ....................................................................................................... 31
3.7.1.
3.7.2.
Turn off Module .............................................................................................................. 33
3.7.2.1.
3.7.2.2.
3.7.2.3.
3.8.
Reset the Module..................................................................................................................... 35
3.9.
RTC Backup............................................................................................................................. 37
UART Application ................................................................................................. 26
Automatic Shutdown ............................................................................................ 34
Confidential / Released
UMTS/HSPA Module Series
UC20 Hardware Design
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