Key point Position Voltage Remark
DV33 (point A) Diode VD201 cathode 3.3V
TC217 may sends out current from this
point after power failure
Point B Diode VD201 anode
3.3V after reset
finishes
After reset finishes, voltage increases
from 0V to 3.3V
Point C Pin 5 of reverter 0V after reset finishes
After reset finishes, voltage decreases
from 3.3V to 0V
URST# (point D)
Connection place of
R256 and R253
3.3V after reset
finishes
After reset finishes, voltage increases
from 0V to 3.3V
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