STM8L051F3 datasheet(80/96 Pages) STMICROELECTRONICS

80 / 96 page

Electrical parameters

STM8L051F3

80/96

DS9178 Rev 4

Table 43. ADC1 characteristics

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VDDA

Analog supply voltage

1.8

3.6

VREF+

Reference supply

voltage

2.4 V

≤VDDA≤ 3.6 V

2.4

VDDA

1.8 V

≤VDDA≤ 2.4 V

VDDA

VREF-

Lower reference voltage

VSSA

IVDDA

Current on the VDDA

input pin

1000

1450

µA

IVREF+

Current on the VREF+

input pin

400

700

(peak)(1)

µA

450

(average)(1)

µA

VAIN

Conversion voltage

range

0(2)

VREF+

Temperature range

-40

°C

RAIN

External resistance on

VAIN

50(3)

CADC

Internal sample and hold

capacitor

fADC

ADC sampling clock

frequency

2.4 V

≤VDDA≤3.6 V

without zooming

0.320

MHz

1.8 V

≤VDDA≤2.4 V

with zooming

0.320

MHz

fCONV

12-bit conversion rate

VAIN on all slow

channels

760(4)

kHz

fTRIG

External trigger

frequency

tconv

1/fADC

tLAT

External trigger latency

3.5

1/fSYSCLK

Sampling time

VAIN on slow channels

VDDA < 2.4 V

0.86(4)

µs

VAIN on slow channels

2.4 V

≤VDDA≤ 3.6 V

0.41(4)

µs

tconv

12-bit conversion time

12 + tS

1/fADC

16 MHz

1(4)

µs

tWKUP

Wakeup time from OFF

state

µs

tIDLE(5)

Time before a new

conversion

TA = +25 °C

1(6)

TA = +70 °C

20(6)

tVREFINT

Internal reference

voltage startup time

refer to

Table 42

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