User Guide

ME310G1 Hardware User Guide
1VV0301588 Rev. 4 Page 6 of 77 2020-01-21
LGA Pads Layout ........................................................................ 26
4. POWER SUPPLY ....................................................................... 27
Power Supply Requirements ....................................................... 27
Power Consumption ................................................................... 28
General Design Rules ................................................................. 30
4.3.1. Electrical Design Guidelines ....................................................... 30
4.3.1.1. +5V Source Power Supply Design Guidelines ............................ 30
4.3.1.2. +12V Source Power Supply Design Guidelines .......................... 31
4.3.1.3. Battery Source Power Supply Design Guidelines ........................ 31
4.3.2. Thermal Design Guidelines ......................................................... 32
4.3.3. Power Supply PCB layout Guidelines ......................................... 33
RTC ............................................................................................ 34
PWRMON Power-on monitor ...................................................... 34
5. DIGITAL SECTION .................................................................... 35
Logic Levels ................................................................................ 35
Power On.................................................................................... 36
Power Off.................................................................................... 37
Unconditional shutdown .............................................................. 38
Wake from deep sleep mode ...................................................... 38
Communication ports .................................................................. 39
5.6.1. USB 2.0 HS ................................................................................ 39
5.6.2. SPI.............................................................................................. 40
5.6.3. Serial Ports ................................................................................. 40
5.6.3.1. Asynchronous Serial Port (USIF0) .............................................. 41
5.6.3.2. Asynchronous Serial Port (USIF1) .............................................. 42
5.6.3.3. Auxiliary Serial Port .................................................................... 43
General purpose I/O ................................................................... 44
5.7.1. Using a GPIO as INPUT ............................................................. 44
5.7.2. Using a GPIO as OUTPUT ......................................................... 45
External SIM Holder .................................................................... 45
ADC Converter ........................................................................... 46
5.9.1. Using ADC Converter ................................................................. 46
DAC Converter ........................................................................... 46
5.10.1. Enabling DAC ............................................................................. 46
CTANK ....................................................................................... 46
Forced USB boot ........................................................................ 46