User's Manual

LZT 123 1836 5
2.6.2 RADIO FREQUENCY (RF) EXPOSURE AND SAR .....................................................21
2.6.3 PERSONAL MEDICAL DEVICES ............................................................................ 22
2.6.4 DISPOSAL OF OLD ELECTRONIC EQUIPMENT ...................................................... 23
2.7 PRODUCT MARKING.................................................................................................23
3 ABBREVIATIONS .................................................................................... 24
Integrating the Wireless Modem.................................................................. 26
4 Mechanical Description ......................................................................... 27
4.1 INTERFACE DESCRIPTION .........................................................................................27
4.2 PHYSICAL DIMENSIONS ............................................................................................29
5 System Connector Interface .................................................................. 30
5.1 OVERVIEW................................................................................................................ 30
5.2 SIGNAL LIST............................................................................................................. 30
5.3 DEALING WITH UNUSED PINS.................................................................................... 34
5.4 GENERAL ELECTRICAL AND LOGICAL CHARACTERISTICS ........................................... 35
5.5 GROUNDS................................................................................................................36
5.5.1 ANALOGUE GROUND (AREF) ..............................................................................36
5.5.2 COMMON GROUND (GND)................................................................................. 37
5.6 REGULATED POWER SUPPLY INPUT (VCC) .................................................................. 38
5.7 VOLTAGE REFERENCE (VREF) .................................................................................... 40
5.8 BATTERY CHARGING INPUT (CHG_IN) ....................................................................... 41
5.8.1 CHARGING PROCESS ......................................................................................... 42
5.8.2 SERIES DIODE.................................................................................................... 43
5.8.3 BATTERY SELECTION ......................................................................................... 44
5.9 POWERING THE MODULE ON AND OFF (PON_L, PON_H) ............................................47
5.9.1 VREF AS A POWER INDICATOR ...........................................................................47
5.9.2 MODULE ON & OFF SEQUENCE ..........................................................................48
5.9.2.1 POWER ON TIMING ....................................................................................... 49