STM32F070CB datasheet(61/83 Pages) STMICROELECTRONICS

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STM32F070CB/RB/C6/F6

Electrical characteristics

Figure 18. Recommended NRST pin protection

1. The external capacitor protects the device against parasitic resets.

2. The user must ensure that the level on the NRST pin can go below the VIL(NRST) max level specified in

Table 48: NRST pin characteristics. Otherwise the reset will not be taken into account by the device.

6.3.16

12-bit ADC characteristics

Unless otherwise specified, the parameters given in Table 49 are preliminary values derived

from tests performed under ambient temperature, fPCLK frequency and VDDA supply voltage

conditions summarized in Table 20: General operating conditions.

Note:

It is recommended to perform a calibration after each power-up.

Table 49. ADC characteristics

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VDDA

Analog supply voltage for

ADC ON

2.4

3.6

IDDA (ADC)

Current consumption of

the ADC(1)

VDD = VDDA = 3.3 V

0.9

fADC

ADC clock frequency

0.6

MHz

fS(2)

Sampling rate

0.05

MHz

fTRIG(2)

External trigger

frequency

fADC = 14 MHz

823

kHz

1/fADC

VAIN

Conversion voltage range

VDDA

RAIN(2)

External input impedance

See Equation 1 and

Table 50 for details

RADC(2)

Sampling switch

resistance

CADC(2)

Internal sample and hold

capacitor

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