NL865B1 HW Design Guide
1VV0301450 Rev. 1
Page
31
of
72
2017-11-20
4.5.1.
LP_WAKE design guide
LP Wake signal could be used by the host to wake up the NE866B1 from any of the sleep
modes (either modem sleep or application sleep or both)
LP Wake signal can be configured to wakeup the system at either rising or falling edge or
both edges.
In most cased the most convenient configuration is falling edge as shown in the application
circuit below.
NOTE:
LP_WAKE has an internal pull up of 1M
Ω
to VAUX (1.8V)
Placing an external pull up is not required and may result in a higher
current consuption.
NOTE:
LP_WAKE is an analog input to a comperator but should be treated
as a digital input from the application side.
•
Rising edge is considured when the signal crossed the level
of 1.2V and going up.
•
Faling edge is considered when the signal crossed the level of
0.7V and going down.
GND
R1
R2
Q1
From Host
Assert high for Wake
LP_WAKE
1M ohm
1.8V
