User's Manual
L710HG EVB User Manual 
Copyright© Shanghai Mobiletek Communication Ltd    10 
4 Key Description 
L710HG development board with a total of 5 top pressure switch and 14 dial switch. 5 top pressure for 
short press trigger control, 14 dial switch (single pole double throw) for the long time state toggle switch. 
The corresponding function on the L710HG development board has a corresponding printing information, 
the function of the specific instructions are as follows: 
4.1 Power on/off and RESET key 
When  power supply for the EVB, the power indicator will light up.  The lower left corner of the 
PWRKEY button on the board, long press 500 MS, can open the module, and press the PWRKEY button 
for more time, then reset the module. 
Figure 4-1:  Power on/off reset key 
4.2 FORCED USB download key 
The  L710HG  enables modules to enter forced download mode  by pressing the FORCED USB 
BOOT  button, at which point the FORCED USB BOOT  will be pulled up to 1.8v.  Before the 
system is powered on, press the FORCED USB BOOT key and the PWRKEY key at the same 
time to enable the L710HG module to enter the forced download mode.
Figure 4-2:  forced usb download key 










