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Automotive Module Series
AG35 Hardware Design
AG35_Hardware_Design 48 / 129
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 150~460ms. As the RESET_N pin is sensitive to interference, the routing trace on the
interface board of the module is recommended to be as short as possible and totally ground shielded.
Table 9: RESET_N Pin Description
Pin Name
Pin No.
Description
DC Characteristics
Comment
RESET_N
1
Reset the module
V
IH
max=2.1V
V
IH
min=1.3V
V
IL
max=0.5V
Pull-up to 1.8V internally.
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
150ms~460ms
Figure 17: Reference Circuit of RESET_N by Using Driving Circuit
RESET_N
S2
Close to S2
TVS
Figure 18: Reference Circuit of RESET_N by Using Button