Telit Wireless Solutions ME910G1-WW - Page 6

ME910G1 HW Design Guide
1VV0301593 Rev.3 Page 6 of 97 2020-03-24
3. PINS ALLOCATION ................................................................... 17
Pin-out ........................................................................................ 17
LGA Pads Layout ........................................................................ 27
4. POWER SUPPLY ....................................................................... 28
Power Supply Requirements ....................................................... 28
Power Consumption ................................................................... 30
General Design Rules ................................................................. 31
4.3.1. Electrical Design Guidelines of the power supply ........................ 31
4.3.1.1. +5V Source Power Supply Design Guidelines ............................ 31
4.3.1.2. +12V Source Power Supply Design Guidelines .......................... 32
4.3.1.3. Battery Source Power Supply Design Guidelines ........................ 33
4.3.2. Thermal Design Guidelines ......................................................... 34
4.3.3. Power Supply PCB layout Guidelines ......................................... 34
VAUX Power Output ................................................................... 37
RTC Supply ................................................................................ 37
5. DIGITAL SECTION .................................................................... 38
Logic Levels ................................................................................ 38
Power On.................................................................................... 39
Power Off.................................................................................... 43
Wake from deep sleep mode ...................................................... 45
Unconditional Shutdown ............................................................. 45
Fast power down ........................................................................ 48
5.6.1. Fast Shut Down by Hardware ..................................................... 49
5.6.2. Fast Shut Down by Software....................................................... 49
Communication ports .................................................................. 50
5.7.1. USB 2.0 HS ................................................................................ 50
5.7.2. SPI.............................................................................................. 51
5.7.3. Serial Ports ................................................................................. 52
5.7.3.1. Modem serial port 1 .................................................................... 52
5.7.3.2. Modem serial port 2 .................................................................... 54
5.7.3.3. RS232 level translation ............................................................... 55
General purpose I/O ................................................................... 56
5.8.1. Using a GPIO as INPUT ............................................................. 57
5.8.2. Using a GPIO as OUTPUT ......................................................... 58
5.8.3. Indication of network service availability ..................................... 58
External SIM Holder .................................................................... 59
ADC Converter ........................................................................... 59