ST72361xx-Auto
Electrical characteristics
19.3.3
Auxiliary voltage detector (AVD) thresholds
Subject to general operating conditions for TA.
Symbol
Parameter
Conditions
VIT+(AVD)
10 AVDF flag toggle
threshold (VDD rise)
VIT-(AVD)
01 AVDF flag toggle
threshold (VDD fall)
Vhys(AVD)
AVD voltage threshold
hysteresis
VIT+(AVD)-VIT-(AVD)
VIT-
Voltage drop between AVD
flag set and LVD reset
activated
VIT-(AVD)-VIT-(LVD)
1. Data based on characterization results, not tested in production.
Figure 98. LVD startup behavior
5V
VIT+
Min Typ Max Unit
4.4(1) 4.6
4.9
V
4.2 4.4 4.65(1)
250
mV
450
LVD RESET
Note:
V DD
2V
Reset state
not defined
in this area
t
When the LVD is enabled, the MCU reaches its authorized operating voltage from a reset
state. However, in some devices, the reset signal may be undefined until VDD is
approximately 2V. As a consequence, the I/Os may toggle when VDD is below this voltage.
Because Flash write access is impossible below this voltage, the Flash memory contents
will not be corrupted.
19.4
Supply current characteristics
The following current consumption specified for the ST7 functional operating modes over
temperature range does not take into account the clock source current consumption. To get
the total device consumption, the two current values must be added (except for HALT mode
for which the clock is stopped).
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