Specifications

Product Technical Specification & Customer Design Guidelines
Interfaces
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WA_DEV_Q64_PTS_001-003 January 9, 2009
3.15.3 Application
1
2
3
Switch
SERVICE
1.5V min
VCC max
Figure 34: Example of SERVICE pin implementation
3.16 VREF Output
VREF output can be used only for pull-up resistor and can be used as a reference
supply.
This voltage supply is available when the Q64 is on.
3.16.1 Features
Electrical characteristics of the signals
Parameter Minimum Typ Maximum Unit
Output voltage 2.74 2.8 2.86 V
VREF
Output current
15 mA
3.16.2 Pin Description
Signal Pin number I/O I/O type Description
VREF
34
O Supply Digital supply
3.16.3 Application
Those digital power supplies are mainly used to:
o pull-up signals such as I/O
o supply the digital transistors driving LEDs
Act as a voltage reference for ADC interface ADIN