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 the Application Board ............................................................... 28
8. Package ..................................................................................................................................... 29
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