Shanghai SIMCom Wireless Solutions Limited SIM7000A ユーザーズマニュアル
Smart Machine Smart Decision
SIM7000 _Hardware Design _V1.00
2017-05-23
3.2 Power on/Power off/Reset Function
3.2.1
Power on
SIM7000 can be powered on by pulling the PWRKEY pin to ground.
The PWRKEY pin has been pulled up with a diode to 1.8V internally, so it does not need to be
pulled up externally. It is strongly recommended to put a 100nF capacitor and an ESD protection
diode close to the PWRKEY pin, as it would strongly enhance the ESD performance of PWRKEY
pin. Please refer to the following figure for the recommended reference circuit.
The PWRKEY pin has been pulled up with a diode to 1.8V internally, so it does not need to be
pulled up externally. It is strongly recommended to put a 100nF capacitor and an ESD protection
diode close to the PWRKEY pin, as it would strongly enhance the ESD performance of PWRKEY
pin. Please refer to the following figure for the recommended reference circuit.
Figure 9: Reference power on/off circuit
The power-on scenarios are illustrated in the following figure.
Figure 10: Power on timing sequence