STM8S005C6 datasheet(79/97 Pages) STMICROELECTRONICS

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STM8S005C6 STM8S005K6

Electrical characteristics

9.3.10

10-bit ADC characteristics

Subject to general operating conditions for VDDA, fMASTER, and TA unless otherwise

specified.

Table 43. ADC characteristics

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

fADC

ADC clock frequency

VDDA = 3 to 5.5 V

MHz

VDDA = 4.5 to 5.5 V

VDDA

Analog supply

5.5

VREF+

Positive reference voltage

2.75(1)

Data guaranteed by design, not tested in production..

-VDDA

VREF-

Negative reference voltage

VSSA

-0.5(1)

VAIN

Conversion voltage range(2)

During the sample time the input capacitance CAIN (3 pF max) can be charged/discharged by the external

source. The internal resistance of the analog source must allow the capacitance to reach its final voltage

level within tS. After the end of the sample time tS, changes of the analog input voltage have no effect on

the conversion result. Values for the sample clock tS depend on programming.

-VSSA

-VDDA

Devices with external

VREF+/VREF- pins

VREF-

-VREF+

CADC

Internal sample and hold

capacitor

(2)

Sampling time

fADC = 4 MHz

0.75

µs

fADC = 6 MHz

0.5

tSTAB

Wakeup time from standby

µs

tCONV

Total conversion time (including

sampling time, 10-bit resolution)

fADC = 4 MHz

3.5

µs

fADC = 6 MHz

2.33

µs

-14

1/fADC

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