CY8CMBR2044_12 CYPRESS [Cypress Semiconductor], CY8CMBR2044_12 Datasheet - Page 7

• Manufacturer Part Number: CY8CMBR2044_12
• Manufacturer: CYPRESS [Cypress Semiconductor]

Toggle ON/OFF
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Flanking Sensor Suppression (FSS)
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Document Number: 001-57451 Rev. *E
Toggles the GPO state at each button touch.
Used for mechanical button replacement. For example, wall
switch.
Helps to distinguish closely spaced buttons.
Also used in situations when a button can produce opposite
effects. For example, an interface with two buttons for
brightness control (UP or DOWN).
FSS action can be explained for the following different
scenarios:
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When only one button is touched, it is reported as ON.
When more than one button is detected as ON and previously
one of those buttons was touched, then the previously
touched button is reported as ON.
Figure 2. Button Status with Respect to Finger Touch when FSS is Enabled
GPO0
CS0
Figure 3. Example LED ON timing diagram on GPO0
Figure 1. Example of Toggle Feature on GP0
LED ON Time
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Provides better visual feedback when a button is released and
improves the design’s aesthetic value.
The GPOx is driven low for a specified interval after the corre-
sponding CSx button is released.
When a button gets reset, LED ON Time is not applied on the
corresponding GPO.
In
LED ON Time) because CS1 button is released. Therefore, the
LED ON Time counter is reset. Now, GPO1 remains LOW for
LED ON Time after releasing CS1.
LED ON Time can range from 0–2000 ms.
LED ON Time resolution is 20 ms.
LED ON Time
Figure 3 on page
7, GPO0 goes high prematurely (prior to
CY8CMBR2044
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