Hardware Guide

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FIBOCOM MC116-NA Series Hardware Guide Page 25 of 63
5 Functional Interfaces
5.1 Control Interfaces
Control interfaces used for module power on/off and reset operations. The pin definitions are as follows:
Table 5-1 Control signal
Pin Name I/O Pin No. Description
RESET_N I 20
When the module is in operating mode, pull down RESET_N
for 700ms~1s, and then release it, the module is reset
PWRKEY I 21
When the module is in power off mode, pull down PWRKEY
for 100ms~2s, and release it, the module will power on;
When the module is in operating mode, pull down PWRKEY
for 3s~8s, and then release it, the module will power off
5.1.1 Power On/Off
5.1.1.1 Power On
When MC116-NA series module is in power off mode, pull down PWRKEY pin for 100ms~2s, the module
will power on. It is recommended to use OC/OD drive circuit to control PWRKEY pin. The OC drive
reference circuit is shown as follows:
Figure 5-1 OC drive power on reference circuit
The other way to control PWRKEY pin is use a button switch, a TVS should located near the button
(ESD9X5VL-2/TR is recommended) for ESD protection. The button switch power on reference circuit is
shown as follows: