ML8011 GSM GPRS Modem User’s Manual
Page 2
Content
ML8011 GPRS Modem User
’
s Manual .............................................................................................. 1
1. Introduction ....................................................................................................................................... 3
2. Product concept ................................................................................................................................. 3
3. Application interface ......................................................................................................................... 5
3.1Pin Description ............................................................................................................................. 5
3.2 Operating modes ......................................................................................................................... 6
3.3 Power supply (VBAT) ................................................................................................................ 7
3.4 Power up and power down scenarios ......................................................................................... 8
3.4.1 Power On .............................................................................................................................. 8
3.4.2 Power down module using the PWRKEY pin ................................................................... 9
3.4.3 Power down module using AT command .......................................................................... 9
3.4.4 Over-voltage or under-voltage automatic shutdown .......................................... 10
3.4.5 Restart module using the PWRKEY pin .......................................................................... 10
3.5 Power saving ............................................................................................................................. 11
3.5.1 Minimum functionality mode ........................................................................................... 11
3.5.2 SLEEP mode (slow clock mode) ...................................................................................... 12
3.5.3 Wake up module from SLEEP mode ............................................................................... 12
3.6 Summary of state transitions .................................................................................................... 12
3.7 Serial interfaces ......................................................................................................................... 13
3.8LED indication ........................................................................................................................... 13
3.8.1 Green Led is the power indication. ................................................................................... 13
3.8.2 Red Led is the Working state indication. ......................................................................... 13
4. Mechanical dimension .................................................................................................................... 14
5. Product List...................................................................................................................................... 15