User's Manual

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2. Electrical Characteristics
2-1. Absolute Maximum Ratings
Symbol Parameter Condition Min Typ Max Units
3.3V
PA and Internal voltage power
supply
3.3 4.6 V
VIO Host I/O power supply
1.8 2.3
V 2.6 3.1
3.3 4.2
External
1.8V
Analog I/O power
supply(optional)
1.8 2.3 V
2-2. Recommended Operating Conditions
Symbol Parameter Condition Min Typ Max Units
3.3V
PA and Internal voltage power
supply
3 3.3 3.6 V
VIO Host I/O power supply
1.62 1.8 1.98
V 2.5 2.6 2.7
2.97 3.3 3.63
External
1.8V
Analog I/O power supply
(optional)
1.7 1.8 1.9 V
2-3. Clock Specifications
AW-NM387 has internal reference clock source. The customer doesn’t need to use external CLK.
2-3.1 External Sleep Clock Timing
External Sleep Clock is necessary for two reasons:
1. Auto frequency Detection.
This is where the internal logic will bin the Ref clock source to figure out what is the reference clock
frequency is. This is done so no strapping is needed for telling 8787 what the ref clock input is.
2. Allow low current modes for BT to enter sleep modes such as sniff modes.