UMTS/HSPA Module Series
UG96 Hardware Design
UG96_Hardware_Design 34 / 76
The value of voltage threshold can be revised by AT command. Please refer to
document [1]
for details.
3.8. Reset the Module
The RESET_N can be used to reset the module. The module can be reset by driving the RESET_N to a
low-level voltage for more than 100ms and then releasing.
Table 9: Pin Definition of RESET_N
Pin Name
Pin No.
Description
DC Characteristics
Comment
RESET_N
17
Reset signal of the
module
V
IH
max=2.1V
V
IH
min=1.3V
V
IL
max=0.5V
Pull-up to VRTC
internally with 200K
Ω
resistor.
Active low.
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.
Reset pulse
RESET_N
4.7K
47K
≥
100ms
Figure 16: Reference Circuit of RESET_N by Using Driving Circuit
NOTE
