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CAP1296 データシート(PDF) 21 Page - Microchip Technology

部品番号 CAP1296
部品情報  6-Channel Capacitive Touch Sensor with Proximity
PDF  68 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

CAP1296 データシート(HTML) 21 Page - Microchip Technology

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 2013-2015 Microchip Technology Inc.
DS00001569B-page 21
CAP1296
If a sensor input is the designated power button, an interrupt is not generated as soon as a touch is detected and repeat
rate is not applicable. See Section 4.9.3, "Interrupts for the Power Button".
APPLICATION NOTE: FIGURE 4-4: and FIGURE 4-5: 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.
4.9.3
INTERRUPTS FOR THE POWER BUTTON
Interrupts are automatically enabled for the power button when the feature is enabled (see Section 4.6, "Power Button").
A touch must be held on the power button for the designated period of time before an interrupt is generated.
FIGURE 4-4:
SENSOR INTERRUPT BEHAVIOR - REPEAT RATE ENABLED
FIGURE 4-5:
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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