pca8885 NXP Semiconductors, pca8885 Datasheet - Page 14

• 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
10.3 Register: SENS
10.4 Register: CLKREG
Table 8.
[1]
All bits in this register are read-only and can be read with the read-sensor command (see
Section
Table 9.
[1]
[2]
Bit
7 to 0
Bit
7
6
5
4 to 3
2 to 0
Default value.
Default value.
Should always be written with logic 0 and if read, it can be either logic 0 or logic 1.
9.4).
Symbol
CH[7:0]
Symbol
CLO
CLI
-
FRQC[1:0]
FRQF[2:0]
SENS - sensor state register bit description
CLKREG - clock setting register bit description
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 24 November 2011
Capacitive 8-channel proximity switch with auto-calibration
Value
0000 0000
1111 1111
Value
0
1
0
1
-
00
01
10
11
000
001
010
011
100
101
110
111
[2]
[1]
[1]
[1]
[1]
to
Description
sensor state of the respective channels IN7 to
IN0
Description
CLK_OUT switch
CLK_IN switch
unused
clock frequency, coarse setting
oscillator tuning
CLK_OUT disabled (unless IC is in
primary-chip mode)
CLK_OUT enabled
CLK_IN disabled (unless IC is in
secondary-chip mode)
CLK_IN enabled, internal oscillator is
powered down
f
f
f
f
f
f
f
f
f
f
f
f
clk
osc
osc
clk
clk
osc
osc
osc
osc
osc
osc
clk
=
=
=
=
=
=
=
=
=
=
=
=
f
f
f
f
osc
osc
osc
0.875
1.75
0.5
0.75
1
1.25
1.5
osc
0.625


4 



16
f
64
osc nom



f
f


osc nom
osc nom
f
f
f

osc nom
osc nom
osc nom
f
f
osc nom
osc nom











PCA8885



© NXP B.V. 2011. All rights reserved.

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