Sunsea AIoT SimCom SIM7090G User Manual page 54

5 Electrical Specifications
5.1 Absolute maximum ratings
Absolute maximum rating for digital and analog pins of SIM7090G are listed in the following table:
Table 34: Absolute maximum ratings
Parameter
Voltage on VBAT
Voltage on USB_VBUS
Voltage at digital pins
(RESET,GPIO,I2C,UART,PCM)
Voltage at PWRKEY
ADC
The absolute parameter is tested when VBAT has the power but the PWRKEY has no pulled down. If it is
over the range, the module will be damage. If the power supply on VBAT pin had been shut down, and the
other pin should not have the voltage. Otherwise, it may lead to abnormally boot up or damage the module.
5.2 Operating conditions
Table 35: Recommended operating ratings
Parameter
Voltage at VBAT
Voltage at USB_VBUS
Make sure that the voltage on the VBAT pins will never drop below 2.7V, even during a transmit burst.
Otherwise, module will be power down.
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SIM7090G User Manual V1.01
Min. Typ.
-0.3 -
-0.3 -
-0.3 -
-0.3 -
-0.3 -
Min. Typ.
2.7 3.8
0 1.8
Max. Unit
6.0 V
2.1 V
2.1 V
2.1 V
1.875 V
Max. Unit
4.8 V
2.1 V
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