Shenzhen Neoway Technology Co., Ltd. Page 3 of 32
Contents
1. Introduction................................................................................................................................6
2. General Description...................................................................................................................6
3. Simplified Block Diagram.........................................................................................................6
4. Key Features...............................................................................................................................7
5. Product Specifications ...............................................................................................................8
5.1 Variants .................................................................................................................................8
5.2 Dimension & Package...........................................................................................................8
5.3 Pin Description......................................................................................................................9
5.4 PCB foot print.....................................................................................................................10
6. Application Interface...............................................................................................................11
6.1 Power Supply Requirements...............................................................................................11
6.1.1 Power Supply Basic Design Rules........................................................................11
6.1.2 Extended Design Rules for Power Supply............................................................13
6.2 ON/OFF Procedure.............................................................................................................15
6.2.1 Turning on the module..........................................................................................16
6.2.2 Turning off the module.........................................................................................16
6.2.3 RESET ..................................................................................................................17
6.2.4 VCCIO..................................................................................................................17
6.3 UART..................................................................................................................................18
6.3.1 Basic Descriptions of UART.................................................................................18
6.3.2 Level Translators for UART..................................................................................18
6.4 Sleep mode..........................................................................................................................20
6.4.1 DTR.......................................................................................................................20
6.4.2 RING.....................................................................................................................21
6.5 SIM interface ......................................................................................................................21
6.6 Running LED Indicator.......................................................................................................23
6.7 Audio Interface ...................................................................................................................24
6.8 Antenna Interface................................................................................................................26
7. Mounting the Module onto theApplication Board...............................................................28
8. Package .....................................................................................................................................29