STM32H7B3AI datasheet(91/238 Pages) STMICROELECTRONICS

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Table 28. Operating conditions at power-up / power-down (regulator ON)

Symbol

Parameter

Min

Max

Unit

tVDD

VDD rise time rate

∞

µs/V

VDD fall time rate

∞

tVDDA

VDDA rise time rate

∞

VDDA fall time rate

∞

tVDDUSB

VDDUSB rise time rate

∞

VDDUSB fall time rate

∞

VDDMMC

VDDMMC rise time rate

∞

VDDMMC fall time rate

∞

6.3.5

Embedded reset and power control block characteristics

The parameters given in Table 29. Reset and power control block characteristics are derived from tests performed

under ambient temperature and VDD supply voltage conditions summarized in Table 22. General operating

conditions.

Table 29. Reset and power control block characteristics

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

tRSTTEMPO(1)

Reset temporization after POR released

377

550

µs

VPOR/PDR

Power-on/power-down reset threshold

Rising edge(1)

1.62 1.67

1.71

Falling edge

1.58 1.62

1.68

VBOR1

Brown-out reset threshold 1

Rising edge

2.04 2.10

2.15

Falling edge

1.95 2.00

2.06

VBOR2

Brown-out reset threshold 2

Rising edge

2.34 2.41

2.47

Falling edge

2.25 2.31

2.37

VBOR3

Brown-out reset threshold 3

Rising edge

2.63 2.70

2.78

Falling edge

2.54 2.61

2.68

VPVD0

Programmable Voltage Detector threshold 0

Rising edge

1.90 1.96

2.01

Falling edge

1.81 1.86

1.91

VPVD1

Programmable Voltage Detector threshold 1

Rising edge

2.05 2.10

2.16

Falling edge

1.96 2.01

2.06

VPVD2

Programmable Voltage Detector threshold 2

Rising edge

2.19 2.26

2.32

Falling edge

2.10 2.15

2.21

VPVD3

Programmable Voltage Detector threshold 3

Rising edge

2.35 2.41

2.47

Falling edge

2.25 2.31

2.37

VPVD4

Programmable Voltage Detector threshold 4

Rising edge

2.49 2.56

2.62

Falling edge

2.39 2.45

2.51

VPVD5

Programmable Voltage Detector threshold 5

Rising edge

2.64 2.71

2.78

Falling edge

2.55 2.61

2.68

VPVD6

Programmable Voltage Detector threshold 6

Rising edge

2.78 2.86

2.94

Falling edge in Run mode

2.69 2.76

2.83

VPOR/PDR

Hysteresis for power-on/power-down reset

Hysteresis in Run mode

STM32H7B3xI

Operating conditions

DS13139 - Rev 8

page 91/238

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