STM32F098CC datasheet(85/128 Pages) STMICROELECTRONICS

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STM32F098CC STM32F098RC STM32F098VC

Electrical characteristics

6.3.15

12-bit ADC characteristics

Unless otherwise specified, the parameters given in Table 55 are derived from tests

performed under the conditions summarized in Table 23: General operating conditions.

Note:

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

Table 54. NPOR pin characteristics

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VIL(NPOR) NPOR Input low level voltage

0.475 VDDA - 0.2(1)

VIH(NPOR)

NPOR Input high level

voltage

-0.5 VDDA + 0.2(1)

Vhys(NPOR)

NPOR Schmitt trigger voltage

hysteresis

100(1)

-mV

RPU

Weak pull-up equivalent

resistor(2)

VIN = VSS

1. Guaranteed by design, not tested in production.

2. The pull-up is designed with a true resistance in series with a switchable PMOS. This PMOS contribution to the series

resistance is minimal (~10% order).

Table 55. 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)

VDDA = 3.3 V

0.9

fADC

ADC clock frequency

0.6

MHz

fS(2)

Sampling rate

12-bit resolution

0.043

MHz

fTRIG(2)

External trigger frequency

fADC = 14 MHz,

12-bit resolution

823

kHz

12-bit resolution

1/fADC

VAIN

Conversion voltage range

VDDA

RAIN(2)

External input impedance

See Equation 1 and

Table 56

for details

kΩ

RADC(2)

Sampling switch

resistance

kΩ

CADC(2)

Internal sample and hold

capacitor

tCAL(2)(3)

Calibration time

fADC = 14 MHz

5.9

µs

-83

1/fADC

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