STM8T141 datasheet(20/50 Pages) STMICROELECTRONICS

No de pièce	STM8T141

Description	Single-channel capacitive sensor for touch or proximity detection with shielded sensing electrode

PDF	50 Pages

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Fabricant	STMICROELECTRONICS [STMicroelectronics]

Site Internet	http://www.st.com

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20 / 50 page

Device operation

STM8T141

20/50

Doc ID 15699 Rev 7

7.2

TOUT/POUT output mode

Four output modes are available on the STM8T141:

●

Active mode

●

Toggle mode

●

3-second Latch mode

●

30-second Latch mode

For each output operation described, touch or proximity detection can be used. Upon the

detection of either of these actions, the TOUT/POUT pin will latch high, otherwise the

TOUT/POUT pin stays low. The detailed working of each user interface is described below.

The TOUT/POUT pin is active high, and can source enough current to directly drive a LED.

The pin is sourced from VDD when active. The TOUT/POUT pin always goes high for a

minimum time of tHIGH. For more information, please refer to Section 9: Electrical

characteristics.

Bits [1:0] of option byte OPT0 are used to select the correct output mode.

7.2.1

Active

Upon the detection of an actuation, the condition of the TOUT/POUT pin will change to high

and stay high for as long as the touch or proximity detection condition occurs. Figure 12

illustrates this output operation.

Figure 12.

Active mode output operation

STM8T141 Fiches technique(PDF) 20 Page - STMicroelectronics