STM32F091CB datasheet(55/127 Pages) STMICROELECTRONICS

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STM32F091xB STM32F091xC

Electrical characteristics

6.3.3

Embedded reset and power control block characteristics

The parameters given in Table 26 are derived from tests performed under the ambient

temperature and supply voltage conditions summarized in Table 24: General operating

conditions.

Table 25. 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 26. 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(2)

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

1.80

1.88

1.96(3)

3. Data based on characterization results, not tested in production.

Rising edge

1.84(3)

1.92

2.00

VPDRhyst

PDR hysteresis

tRSTTEMPO(4)

4. Guaranteed by design, not tested in production.

Reset temporization

1.50

2.50

4.50

Table 27. Programmable voltage detector characteristics

Symbol

Parameter

Conditions

Min

Typ

Max

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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