STM32F050C4 datasheet(40/97 Pages) STMICROELECTRONICS

40 / 97 page

Electrical characteristics

STM32F050xx

40/97

Doc ID 023683 Rev 1

6.3.2

Operating conditions at power-up / power-down

The parameters given in Table 16 are derived from tests performed under the ambient

temperature condition summarized in Table 15.

6.3.3

Embedded reset and power control block characteristics

The parameter given in Table 17 is derived from tests performed under ambient temperature

and VDD supply voltage conditions summarized in Table 15: General operating conditions.

Table 16.

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 17.

Embedded reset and power control block characteristics

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VPOR/PDR

(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)

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

tRSTTEMPO

(3)

Guaranteed by design, not tested in production.

Reset temporization

1.5

2.5

4.5

Table 18.

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

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