Quectel EC21 Series User Manual

LTE Standard Module Series
EC21_Series_Hardware_Design
47
/ 118
for 150–460 ms.
Table 9: Pin Definition of RESET_N
The recommended circuit is similar to the PWRKEY control circuit. An open drain/collector driver or
button can be used to control the RESET_N.
Figure 14: Reference Circuit of RESET_N by Using Driving Circuit
Figure 15: Reference Circuit of RESET_N by Using a Button
The reset scenario is illustrated in the following figure.
Pin Name Pin No. I/O Description Comment
RESET_N 20 DI Reset the module 1.8 V power domain

Quectel EC21 Series Specifications

General

Brand	Quectel
Model	EC21 Series
Category	Control Unit
Language	English