User Manual

GSM/GPRS Module Series
GC10 Hardware Design
GC10_Hardware_Design Confidential / Released 3 / 76
Contents
About the Document ................................................................................................................................... 2
Contents ....................................................................................................................................................... 3
Table Index ................................................................................................................................................... 5
Figure Index ................................................................................................................................................. 6
1 Introduction .......................................................................................................................................... 8
1.1. Safety Information ................................................................................................................... 8
2 Product Concept ................................................................................................................................ 10
2.1. General Description ............................................................................................................... 10
2.2. Directives and Standards ...................................................................................................... 10
2.2.1. FCC Statement ............................................................................................................... 10
2.2.2. FCC Radiation Exposure Statement .............................................................................. 11
2.3. Key Features ......................................................................................................................... 11
2.4. Functional Diagram ............................................................................................................... 13
2.5. Evaluation Board ................................................................................................................... 14
3 Application Interface ......................................................................................................................... 15
3.1. Pin of Module ......................................................................................................................... 16
3.1.1. Pin Assignment .............................................................................................................. 16
3.1.2. Pin Description ............................................................................................................... 17
3.2. Operating Modes ................................................................................................................... 21
3.3. Power Supply ........................................................................................................................ 22
3.3.1. Power Features of Module ............................................................................................. 22
3.3.2. Decrease Supply Voltage Drop ...................................................................................... 22
3.3.3. Reference Design for Power Supply .............................................................................. 23
3.3.4. Monitor Power Supply .................................................................................................... 24
3.4. Power On and Down Scenarios ............................................................................................ 24
3.4.1. Power On ....................................................................................................................... 24
3.4.2. Power Down ................................................................................................................... 26
3.4.2.1. Power Down Module by the PWRKEY Pin ....................................................... 27
3.4.2.2. Power Down Module by AT Command ............................................................. 28
3.4.2.3. Over-voltage or Under-voltage Automatic Shutdown ........................................ 28
3.4.2.4. Emergency Shutdown by EMERG_OFF Pin .................................................... 29
3.4.3. Restart ............................................................................................................................ 30
3.5. Power Saving Technology ..................................................................................................... 31
3.5.1. Minimum Functionality Mode ......................................................................................... 31
3.5.2. Sleep Mode .................................................................................................................... 31
3.5.3. Wake Up Module from Sleep Mode ............................................................................... 32
3.5.4. Summary of State Transition .......................................................................................... 32
3.6. RTC Backup .......................................................................................................................... 32
3.7. Serial Interfaces ..................................................................................................................... 34
3.7.1. UART Port ...................................................................................................................... 36
3.7.1.1. The Features of UART Port ............................................................................... 36