User guide

M33 EVB User Guide
3.6. Switches and Buttons
Figure 13: Switches and buttons
Table 9: Switches and buttons
Part Name I/O Description
S1
5V_ ON/OFF switch I Switch on/off the power supply from the
power adaptor
S2 VCHG I
Control charge to a Li-ion or Li Polymer
battery by the module.
S3 D/L I Place to ON when downloading firmware
K1
ON/OFF I Press this button for 2 seconds to turn
on/off the module
K2 EMERG_OFF I
Shutdown the module in case of
emergency. Hardware power off
operation. Press this button will
immediately turn off the module.
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