WM620 Hardware User Guide
V1.1
All rights reserved by Shenzhen Neoway Technology Co., Ltd.
Page 1
Contents
1 Features and Description....................................................................................................................................2
1.1 HW block diagram and block description......................................................................................................2
1.2 Key Features................................................................................................................................................... 2
1.3 Pin assignment and description...................................................................................................................... 0
2 Applicable interface.............................................................................................................................................3
2.1 Power supply Interface...................................................................................................................................3
2.1.1 Power Supply Requirements................................................................................................................... 3
2.1.2 VRTC Interface....................................................................................................................................... 5
2.1.3 Power Supply Output.............................................................................................................................. 6
2.1.4 Power on Sequences................................................................................................................................6
2.2 Power ON/OFF and Reset..............................................................................................................................6
2.2.1 ON_OFF.................................................................................................................................................. 6
2.2.2 RESET_N................................................................................................................................................ 7
2.3 Module Status Output.....................................................................................................................................7
2.3.1 LED Indicator..........................................................................................................................................7
2.3.2 Ring......................................................................................................................................................... 8
2.4 SIM Card........................................................................................................................................................ 9
2.5 USB Interface............................................................................................................................................... 10
2.6 UART............................................................................................................................................................11
2.6.1 Basic Descriptions of UART.................................................................................................................11
2.6.2 Level Translators for UART..................................................................................................................11
2.7 Audio interface............................................................................................................................................. 13
3 Mechanics, Mounting and Packaging..............................................................................................................14
3.1 Dimension and PCB layout.......................................................................................................................... 14
3.2 Assembly...................................................................................................................................................... 14
3.3 Packaging and solder....................................................................................................................................15
4 Typical Application SCH..................................................................................................................................16
5 Abbreviations..................................................................................................................................................... 17
