STM8T141 datasheet(19/50 Pages) STMICROELECTRONICS

部件名	STM8T141

功能描述	Single-channel capacitive sensor for touch or proximity detection with shielded sensing electrode

PDF	50 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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19 / 50 page

STM8T141

Device operation

Doc ID 15699 Rev 7

19/50

Table 6.

Option byte description

Option

byte no.

Description

OPT1

Bits [7:3]: Reserved

Bit 2: Sampling period (tSAMPLING)(Section 7.6: Sampling period)

0: Conversion period is 20 ms



1: Conversion period is 10 ms

Bit 1: Charge transfer frequency (fTRANSFER)(Section 7.5: Charge transfer frequency)

0: 125 kHz



1: 250 kHz

Bit 0: Reserved

OPT0

Bits [7:6]: Power mode (Section 7.4: Power modes)

00: Low Power mode with Zoom



01: Normal Power mode



10: Extreme Low Power mode with Zoom



11: Extreme Low Power mode

Bits [5:4]: Detection threshold (Section 7.3: Detection threshold)

00: Standard proximity



01: Standard touch



10: Sensitive proximity



11: Sensitive touch

Bits [3:2]: Reference freeze timeout (Section 5.3.2: Reference freeze timeout)

00: 15-second reference freeze timeout



01: 45-second reference freeze timeout



10: Reserved



11: Infinite reference freeze

Bits [1:0]: TOUT/POUT output mode (Section 7.2: TOUT/POUT output mode)

00: Active mode



01: Toggle mode



10: 3-second Latch mode



11: 30-second Latch mode

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