EVB User Guide
M80_EVB_UGD_V1.0
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3.7.
Switches and buttons
S1
S2
S3
S4
K1
K2
Figure 12: Switches and buttons
Table 12: Switches and buttons
Part
Name
I/O
Description
Note
S1
VBAT
I
Control power supply via adaptor
S2
VCHG
I
Control charging if module has
charging function
S3
DOWNLOAD
I
Pull to “ON” when downloading
firmware via USB
S4
PWRKEY
Pull to “ON” when downloading
firmware via UART
K1
PWRKEY
I
Turn on/off the module
K2
EMERG_OFF
I
Emergency button for shutting down
the system
Quectel
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