STM8T143 datasheet(27/65 Pages) STMICROELECTRONICS

Part #	STM8T143

Description	Single-channel capacitive sensor for touch and proximity detection

PDF	65 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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27 / 65 page

DocID18315 Rev 6

27/65

STM8T143

Device operation

Table 3. Option byte description

Option

byte no.

Description

OPT2

Bits [7:6]: Reserved, must be cleared

Bit 5: Output type in Control mode (see Section 6.2.2: Control mode)

0: Proximity output

1: Touch output

Bit 4: Release threshold ratio

0: 75 %

1: 87.5 %

Bits [3:1]: Gain target

000: 200

001: 250

010: 300

011: 350

100: 400

101: 550

110: 700

111: 850

Bit 0: Reserved, must be cleared

OPT1

Bit 7: Data streaming mode (see Section 6.2.3: Data streaming mode)

0: Disabled

1: Enabled

Bits [6:5]: Low power mode (see Section 6.4: Power modes)

00: Normal power mode

01: Low power mode 1

10: Low power mode 2

11: Low power mode 3

Bits [4:3]: Reference freeze timeout tRFT(see Section 5.6: Debounce filter)

00: Infinite

01: 18 s

10: 60 s

11: 3 s

Bit 2: Dynamic calibration delay (tDYCAL)

0: 250 ms

1: 1 s

Bit 1: Reserved, must be cleared

Bit 0: Dual output/Control mode (see Section 6.2.1: Dual output mode)

0: Pin 8 in Control input mode

1: Pin 8 in Proximity output mode

STM8T143 Datasheet(PDF) 27 Page - STMicroelectronics

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