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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STM8T141 датащи(PDF) 22 Page - STMicroelectronics |
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STM8T141 датащи(HTML) 22 Page - STMicroelectronics |
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22 / 50 page  Device operation STM8T141 22/50 Doc ID 15699 Rev 7 7.2.4 30-second latch Upon the detection of an actuation, the TOUT/POUT pin will latch high. After 30 seconds from when the actuation stops, the TOUT/POUT pin will go low. If the TOUT/POUT pin is high and another actuation occur before the 30 seconds has expired, the counter will reset and only 30 seconds after the new actuation has stopped, will the TOUT/POUT pin go low. Figure 15 illustrates this output operation. Figure 15. 30-second latch mode output operation 7.3 Detection threshold The user has a choice between four detection threshold levels (DTh) at which the touch or proximity detection condition is triggered. This depends on which threshold configuration is selected. See Table 7 for more details regarding the detection threshold selections. Bits [5:4] of option byte OPT0 are used to select the correct detection threshold levels. Table 7. Detection thresholds Sensitivity DTh setting Description Most sensitive Least sensitive Sensitive proximity threshold Proximity for battery-powered applications. Standard proximity threshold Proximity with good ground. Contact through 3 mm acrylic glass and no ground. Sensitive touch threshold Contact through thin acrylic glass with battery application. Standard touch threshold Contact through thin dielectric with good ground. |
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