APBDG0L031K0FA
apbdg0l031k0fa_g_en_101
18/35
To prevent the data damage the computer must be shut down only by SB
terminal.
First, it’s necessary to disconnect the supply voltage from SB terminal, thereby
is initiated a correct process of systemic termination of application and
operating system run.
Only after completion of operating system run and unit’s
shut down, the supply voltage can be disconnected from terminal Vcc, or
voltage can be left connected to Vcc terminal permanently.
Together with initiating of systemic switch-off, the function of dispatch processor
for unit’s shut down is activated. This shut down takes place after elapsing of 1
minute, independently on the immediate state of systemic switch-off. The time
adjusted for shut down by dispatch processor must be longer than time for
correct software shut down of operating system. If it is not true, data corruption
can occur.
+U
GND
Vcc
PE
GND
SB
SW
BAT
Fig. 8 - Recommended scheme of computer wiring
+U
GND
Vcc
PE
GND
SB
SW
Fig. 9 - Correct start up / shut down
This state can cause corruption of data in the internal FLASH memory. It can
occur, if supply voltage is disconnected concurrently from both SB and Vcc
terminals, or, if shut down by dispatch processor is activated before correct
terminating of operating system run.
Correct
shut down
Incorrect
shut down
