STM32F303RE datasheet(73/173 Pages) STMICROELECTRONICS

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STM32F303xD STM32F303xE

Electrical characteristics

151

6.3.2

Operating conditions at power-up / power-down

The parameters given in Table 20 are derived from tests performed under the ambient

temperature condition summarized in Table 19.

6.3.3

Embedded reset and power control block characteristics

The parameters given in Table 21 are derived from tests performed under ambient

temperature and VDD supply voltage conditions summarized in Table 19.

Table 20. Operating conditions at power-up / power-down

Symbol

Parameter

Conditions

Min

Max

Unit

tVDD

VDD rise time rate

∞

µs/V

VDD fall time rate

∞

tVDDA

VDDA rise time rate

∞

VDDA fall time rate

∞

Table 21. Embedded reset and power control block characteristics

Symbol

Parameter

Conditions

Min.

Typ. Max. Unit

VPOR/PDR(1)

1. The PDR detector monitors VDD and also VDDA (if kept enabled in the option bytes). The POR detector

monitors only VDD.

Power on/power down

reset threshold

Falling edge

1.8(2)

2. The product behavior is guaranteed by design down to the minimum VPOR/PDR value.

1.88

1.96

Rising edge

1.84

1.92

2.0

VPDRhyst(1) PDR hysteresis

Table 22. Programmable voltage detector characteristics

Symbol

Parameter

Conditions

Min(1)

Typ

Max(1)

Unit

VPVD0

PVD threshold 0

Rising edge

2.1

2.18

2.26

Falling edge

2.08

2.16

VPVD1

PVD threshold 1

Rising edge

2.19

2.28

2.37

Falling edge

2.09

2.18

2.27

VPVD2

PVD threshold 2

Rising edge

2.28

2.38

2.48

Falling edge

2.18

2.28

2.38

VPVD3

PVD threshold 3

Rising edge

2.38

2.48

2.58

Falling edge

2.28

2.38

2.48

VPVD4

PVD threshold 4

Rising edge

2.47

2.58

2.69

Falling edge

2.37

2.48

2.59

VPVD5

PVD threshold 5

Rising edge

2.57

2.68

2.79

Falling edge

2.47

2.58

2.69

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