STM8S903K3 datasheet(83/121 Pages) STMICROELECTRONICS

Part #	STM8S903K3

Description	16 MHz STM8S 8-bit MCU, up to 8 Kbytes Flash, 1 Kbyte RAM, 640 bytes EEPROM,10-bit ADC, 2 timers, UART, SPI, IC

PDF	121 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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STM8S903K3 STM8S903F3

Electrical characteristics

10.3.10

10-bit ADC characteristics

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

specified.

Table 47. ADC characteristics

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

fADC

ADC clock frequency

VDD= 2.95 to 5.5 V

MHz

VDD= 4.5 to 5.5 V

VAIN

Conversion voltage range(1)

1. During the sample time, the sampling 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.

VSS

VDD

CADC

Internal sample and hold

capacitor

tS(1)

Minimum sampling time

fADC = 4 MHz

0.75

µs

fADC = 6 MHz

0.5

tSTAB

Wakeup time from standby

µs

tCONV

Minimum 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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