Sierra Wireless AIRPRIME WISMO218 - Manual (Page 68)

WA_DEV_W218_PTS_002 Rev 006 April 29, 2010 68
Product Technical Specification &
Customer Design Guidelines Interfaces
3.15. VCC_2V8 Output
The VCC_2V8 output can only be used for pull-up resistor(s) and as a reference supply.
This voltage supply is available when the AirPrime WISMO218 is switched on.
3.15.1. Features
Table 29: Electrical Characteristics of the Signals
Parameter Minimum Typ Maximum Unit
VCC_2V8
Output voltage 2.70 2.80 2.95 V
Output Current
Full-power mode - - 50 mA
Sleep mode - - 3 mA
3.15.2. Pin Description
Table 30: VCC_2V8 Pin Descriptions
Signal Pin Number I/O I/O Type Description
VCC_2V8 46 O Supply Digital supply
3.15.3. Application
This digital power supplies are mainly used to:
 Pull-up signals such as I/O
 Supply the digital transistors driving LEDs
 Act as a voltage reference for ADC interface AUX-ADC0