Datasheet

DS12110 Rev 5 171/231
STM32H743xI Electrical characteristics
199
6.3.24 V
BAT
monitoring characteristics
6.3.25 Voltage booster for analog switch
Table 92. V
BAT
monitoring characteristics
Symbol Parameter Min Typ Max Unit
R Resistor bridge for V
BAT
-26-K
Q
Ratio on V
BAT
measurement - 4 - -
Er
(1)
1. Guaranteed by design.
Error on Q –10 - +10 %
t
S_vbat
(1)
ADC sampling time when reading V
BAT
input 9 - - µs
Table 93. V
BAT
charging characteristics
Symbol Parameter Condition Min Typ Max Unit
R
BC
Battery charging resistor
VBRS in PWR_CR3= 0 - 5 -
K
VBRS in PWR_CR3= 1 1.5 -
Table 94. Voltage booster for analog switch characteristics
(1)
1. Guaranteed by characterization results.
Symbol Parameter Condition Min Typ Max Unit
V
DD
Supply voltage - 1.62 2-6 3.6 V
t
SU(BOOST)
Booster startup time - - - 50 µs
I
DD(BOOST)
Booster consumption
1.62 V  V
DD
 2.7 V - - 125
µA
2.7 V < V
DD
< 3.6 V - - 250