Reset The Module; Uc20_Hardware_Design - Quectel UC20 Manual

The uncritical voltage is 3.4V to 4.3V, If the voltage > 4.3V or < 3.4V the module would automatically shut
down itself.
If the voltage < 3.4V, the following URC will be presented:
+QIND: "vbatt",-2
If the voltage > 4.3V, the following URC will be presented:
+QIND: "vbatt",2
NOTE
The value of voltage threshold can be revised by command AT+QCFG="vbatt", refer to document [1]
for details.

3.8. Reset the Module

The RESET_N can be used to reset the module.
Table 8: RESET_N Pin Description
Pin Name Pin No.
RESET_N 20
You can reset the module by driving the RESET_N to a low level voltage for more than 150ms and then
releasing.
The recommended circuit is similar to the PWRKEY control circuit. You can use open drain/collector
driver or button to control the RESET_N.

UC20_Hardware_Design

Description
Reset the module.
Confidential / Released
UMTS/HSPA Module Series
DC Characteristics
V max = 2.1V
IH
V min = 1.3V
IH
V max = 500mV
IL
UC20 Hardware Design
Comment
Pull-up to 1.8V internally
with 200kΩ resistor.
Active low.
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