CY8C20111 View Datasheet(PDF) - Cypress Semiconductor
Part Name
Description
MFG CO.
CY8C20111
Cypress Semiconductor
'CY8C20111' PDF : 34 Pages View PDF
CY8C20111, CY8C20121
CS_DEBOUNCE
Debounce Register.
CS_DEBOUNCE: 53h
1/2 Button
7
6
5
4
3
2
1
0
Access: FD
RW:0A
Bit Name
DB[7:0]
The Debounce parameter adds a debounce counter to the ‘sensor active transition’. For the sensor to transition from inactive to active,
the consecutive samples of difference count value must stay above the ‘finger threshold + hysteresis’ for the number specified. This
parameter is common for all sensors.
Possible values are 1 to 255. A setting of ‘1’ provides no debouncing.
Bit
Name
7:0
DB [7:0]
Description
These bits are used to set the debounce value.
CS_NEG_NOISE_TH
Negative Noise Threshold Register
CS_NEG_NOISE_TH: 54h
1/2 Button
7
6
5
4
3
2
1
0
Access: FD
RW:0A
Bit Name
NNT[7:0]
This parameter adds a negative difference count threshold. If the current raw count is below the baseline and the difference between
them is greater than this threshold, the baseline is not updated. However, if the current raw count stays in the low state (difference
greater than the threshold) for the number of samples specified by the Low Baseline Reset parameter, the baseline is reset. This
parameter is common for all sensors.
Bit
Name
7:0
NNT [7:0]
Description
These bits are used to set the negative noise value.
CS_LOW_BL_RST
Low Baseline Reset Register
CS_LOW_BL_RST: 55h
1/2 Button
7
6
5
4
3
2
1
0
Access: FD
Bit Name
RW:0A
LBR[7:0]
This parameter works together with the Negative Noise Threshold parameter. If the sample count values are below the baseline minus
the negative noise threshold for the specified number of samples, the baseline is set to the new raw count value. It essentially counts
the number of abnormally low samples required to reset the baseline. It is generally used to correct the finger-on-at-startup condition.
This parameter is common for all sensors.
Bit
Name
7:0
LBR [7:0]
Description
These bits are used to set the Low Baseline Reset value.
Document Number: 001-53516 Rev. *H
Page 18 of 44
Share Link: 