L831-EA Module Hardware User Manual
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Figure 5- 3 the recommended design of FUL_CARD_POWER_OFF# signal
5.2.2 RESET Signal
L831-EA wireless module supports external reset function. The module can back to initial state through
Reset _N signal.
While the RESET# signal is active low and keep 100ms, the module will reset and restart. The internal
PMU cannot power cut while the clients execute the RESET function.
Note:
Reset signal is sensitive signal line , while PCB layout, please keep it away from RF interference,
add the surrounding processing and recommend to decouple capacitor near the module. Don’t layout the
Reset signal in PCB edge or surface to avoid ESD causing system reset.
The requirements of Pulse Timing as listed below:
Parameters
Condition
Minimum
Typical
Maximum
Unit
Pulse Width
Reset
7
100
1000
ms
The recommended design as follows:
Figure5- 4 Recommended design of RESET# circuit
