Hardware Development Guide
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ME3630 mini-PCIE
ME3630 mini-PCIE
4.5
WAKEUP_IN
S
IGNAL
WAKEUP_IN pin is the authorization signal of module entering sleep state.
If the signal is pulled up to high level (1.8 V), module cannot enter sleep mode. If this pin is not connected, it will keep in low level by
default.
Table below shows the definition of the WAKEUP_IN signal.
Table 4-3 WAKEUP_IN
definition
Signal
No.
I/O
Description of Pins
Note
WAKEUP_IN
19
DI
Input signal
1.8V domain, drop-down default. it triggers
the action only when level change
Rising edge wake up module; Falling edge modules
can enter sleep
.
Figure 4–3 WAKEUP_IN input sequence
WAKEUP_IN
High
Low
Module state Operating State
Sleep state
High
Operating State
Figure 4–4 Reference Connection Circuit of WAKEUP_IN Signal
NOTE:
The resistors in Figure above is only the recommended value and they need to adjust according to the actual situation.
There is anti-shake design with pin WAKEUP_IN internal, external processor need to pull-up or pull-down the pin last for
at least 500ms.
