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STM32H7B3AI Datasheet(PDF) 157 Page - STMicroelectronics

No. de pieza STM32H7B3AI
Descripción Electrónicos  32-bit Arm® Cortex®-M7 280 MHz MCUs, 2-Mbyte flash memory, 1.4-Mbyte RAM, 46 com. and analog interfaces, SMPS, crypto
PDF  238 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32H7B3AI Datasheet(HTML) 157 Page - STMicroelectronics

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6.3.26
Temperature and VBAT monitoring
Table 102. VBAT monitoring characteristics
Symbol
Parameter
Min
Typ
Max
Unit
R
Resistor bridge for VBAT
-
26
-
KΩ
Q
Ratio on VBAT measurement
-
4
-
-
Er(1)
Error on Q
–10
-
+10
%
tS_vbat(1)
ADC sampling time when reading VBAT input
9
-
-
µs
VBAThigh
High supply monitoring
-
3.55
-
V
VBATlow
Low supply monitoring
-
1.36
-
1. Guaranteed by design.
Table 103. VBAT charging characteristics
Symbol
Parameter
Condition
Min
Typ
Max
Unit
RBC
Battery charging resistor
VBRS in PWR_CR3= 0
-
5
-
KΩ
VBRS in PWR_CR3= 1
-
1.5
-
Table 104. Temperature monitoring characteristics
Symbol
Parameter
Min(1)
Typ(1)
Max(1)
Unit
TEMPhigh
High temperature monitoring
-
117
-
°C
TEMPlow
Low temperature monitoring
-
–25
-
1. Guaranteed by design.
6.3.27
Voltage booster for analog switch
Table 105. Voltage booster for analog switch characteristics
Symbol
Parameter
Condition
Min(1)
Typ(1)
Max(1)
Unit
VDD
Supply voltage
-
1.62
2.6
3.6
V
tSU(BOOST)
Booster startup time
-
-
-
50
µs
IDD(BOOST)
Booster consumption
1.62 V ≤ VDD ≤ 2.7 V
-
-
125
µA
2.7 V < VDD < 3.6 V
-
-
250
1. Guaranteed by characterization results.
6.3.28
Comparator characteristics
Table 106. COMP characteristics
Symbol
Parameter
Conditions
Min(1) Typ(1) Max(1) Unit
VDDA
Analog supply voltage
-
1.62
3.3
3.6
V
VIN
Comparator input voltage range
-
0
-
VDDA
VBG(2)
Scaler input voltage
-
-
VSC
Scaler offset voltage
-
-
±5
±10
mV
STM32H7B3xI
Operating conditions
DS13139 - Rev 8
page 157/238



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