Datasheet

8 Channel Capacitive Touch Sensor with 8 LED Drivers
Datasheet
SMSC CAP1188 91 Revision 1.32 (01-05-12)
DATASHEET
44h
Page 47
New - Configuration 2
new register to control alert polarity, LED
touch linking behavior, LED output
behavior, and noise detection, and
interrupt on release
40h
24h
Page 52
Changed - Averaging
Control
updated register bits - moved
SAMP_AVG[2:0] bits and added
SAMP_TIME bit 1. Default changed
39h
2Bh
Page 56
New - Multiple Touch
Pattern Configuration
new register for Multiple Touch Pattern
configuration - enable and threshold
settings
80h
2Dh
Page 58
New - Multiple Touch
Pattern Register
new register for Multiple Touch Pattern
detection circuitry - pattern or number of
sensor inputs
FFh
2Fh
Page 58
Changed -
Recalibration
Configuration
updated register - updated CAL_CFG bit
decode to add a 128 averages setting
and removed highest time setting.
Default changed. Added bit 6
NO_CLR_INTD and bit 5 NO_CLR_NEG.
8Ah
38h
Page 61
Changed - Sensor
Input Noise Threshold
updated register bits - removed bits 7 - 3
and consolidated all controls into bits 1 -
0. These bits will set the noise threshold
for all channels. Default changed
01h
39h
Removed - Noise
Threshold Register 2
removed register n/a
41h
Page 62
Changed - Standby
Configuration
updated register bits - moved
STBY_AVG[2:0] bits and added
STBY_TIME bit 1. Default changed
39h
77h
Page 69
New - Linked LED
Transition Control
new register to control transition effect
when LED linked to sensor inputs
00h
79h
Page 70
New - LED Mirror
Control
new register to control LED output
mirroring for brightness control when
polarity changed
00h
90h
Page 77
Changed - LED Pulse 1
Duty Cycle
changed bit decode to be more
logarithmic
F0h
91h
Page 77
Changed - LED Pulse 2
Duty Cycle
changed bit decode to be more
logarithmic
F0h
92h
Page 77
Changed - LED
Breathe Duty Cycle
changed bit decode to be more
logarithmic
F0h
93h
Page 77
Changed - LED Direct
Duty Cycle
changed bit decode to be more
logarithmic
F0h
95h
Added controls - LED
Off Delay
Added bits 6-4 BR_OFF_DLY[2:0]
Added bit 3 DIR_OFF_DLY[3]
00h
FDh
Page 83
Changed - Product ID Changed bit decode for CAP1188 50h
Table A.1 Register Delta From CAP1088 to CAP1188 (continued)
ADDRESS REGISTER DELTA DELTA DEFAULT