STM8T143 datasheet(42/65 Pages) STMICROELECTRONICS

42 / 65 page

Electrical characteristics

STM8T143

42/65

DocID18315 Rev 6

9.5

Capacitive sensing characteristics

The values in Table 16: General capacitive sensing characteristics are guaranteed by

design. They include the oscillator tolerance, the tSAMPLING period, and the debouncing

influence.

Table 16. General capacitive sensing characteristics

Symbol

Parameter

Min

Typ

Max

Unit

fTRANSFER

Charge-transfer frequency

200(1)

250

300(1)

kHz

tSAMPLING(2)

Normal power mode

Low power mode 1

Low power mode 2

100

120

Low power mode 3

240

300

360

tAET

Automatic electrode tuning process time(3)

-59

tCTRL

Acquisition halt or reference freeze control

trecal_control

CTRL pin pulse duration for recalibration

Response time(4)

Normal power mode

Low power mode 1

125

Low power mode 2

315

Low power mode 3

850

tAET_HALT

AET HALT period after end of detection

RFTh

ECS filter freeze threshold in release state

Ref ±8

Burst count

TFTh

ECS filter freeze threshold in touch state

Ref +16

AET target value AET target value

1344

1600

1856

Gain

Gain target value A

200

Gain target value B

250

Gain target value C

300

Gain target value D

350

Gain target value E

400

Gain target value F

550

Gain target value G

700

Gain target value H

850

STM8T143 Datasheet(PDF) 42 Page - STMicroelectronics

STM8T143 Datasheet(HTML) 42 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65

Datasheet Descarga

Enlace URL