pca8885 NXP Semiconductors, pca8885 Datasheet - Page 34

• Manufacturer Part Number: pca8885
• Description: Capacitive 8-channel Proximity Switch With Auto-calibration And Very Low Power Consumption
• Manufacturer: NXP Semiconductors

NXP Semiconductors
PCA8885
Objective data sheet
Fig 25. Cascaded application diagram
(1) If the SLEEP pin is not used, it must be connected to V
(2) Pin CLK_IN can be tied to V
(3) Instead of the INT pin, interrupt over I
18.3 Cascaded application
SENSOR MATRIX
SS
or left open.
(2)
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2
C-bus can be used. If the INT pin is not used, it must be left open.
V
DD
100 nF
100 nF
Rev. 1 — 24 November 2011
C
C
IN[0]
IN[1]
IN[3]
IN[7]
IN[0]
CLK_IN
INT_IN
IN[2]
CLK_IN
IN[1]
IN[2]
IN[3]
IN[7]
INT_IN
CPC[0]
CPC[0]
CPC[0]
CPC[0]
Capacitive 8-channel proximity switch with auto-calibration
TEST
TEST
(secondary)
PCA8885
PCA8885
SS
(primary)
.
CPC[7]
CPC[7]
C
C
CPC[7]
CPC[7]
V
V
V
V
DD
DD
DD(INTREGD)
DD(INTREGD)
100 nF
100 nF
CLK_OUT
CLK_OUT
SLEEP
SLEEP
100 nF
100 nF
V
V
SDA
SS
SDA
SCL
SS
SCL
INT
INT
A0
A0
100 nF
100 nF
R PU
(1)
(3)
(1)
V
DD
R PU
013aaa581
V
DD
PCA8885
© NXP B.V. 2011. All rights reserved.
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