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CAP1208 データシート(PDF) 25 Page - Microchip Technology

部品番号 CAP1208
部品情報  8-Channel Capacitive Touch Sensor
PDF  67 Pages
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メーカー  MICROCHIP [Microchip Technology]
ホームページ  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

CAP1208 データシート(HTML) 25 Page - Microchip Technology

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8-Channel Capacitive Touch Sensor
Datasheet
 2014 Microchip Technology Inc.
DS00001570B-page 25
APPLICATION NOTE: Figure 4.3 and Figure 4.4 show default operation which is to generate an interrupt upon
sensor pad release.
APPLICATION NOTE: The host may need to poll the device twice to determine that a release has been detected.
4.8.3
Interrupts for the Power Button
Interrupts are automatically enabled for the power button when the feature is enabled (see Section 4.5,
"Power Button"). A touch must be held on the power button for the designated period of time before
an interrupt is generated.
Figure 4.3 Sensor Interrupt Behavior - Repeat Rate Enabled
Figure 4.4 Sensor Interrupt Behavior - No Repeat Rate Enabled
Touch Detected
INT bit
Button Status
Write to INT bit
Sensing Cycle
(35ms)
Min Press Setting
(280ms)
Interrupt on
Touch
Button Repeat Rate
(175ms)
Button Repeat Rate
(175ms)
Interrupt on
Release
(optional)
ALERT# pin
Touch Detected
INT bit
Button Status
Write to INT bit
Sensing Cycle
(35ms)
Interrupt on
Touch
Interrupt on
Release
(optional)
ALERT# pin



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