6 Channel Capacitive Touch Sensor with 2 LED Drivers
Datasheet
VDD
Embedded Controller
ADDR_COMM
3.3V – 5V
3.3V – 5V
CAP1026
LED2
CS2
LED1
CS1
Touch
Button
Touch
Button
Touch
Button
Touch
Button
CS4
CS6
CS3
CS5
Touch
Button
Touch
Button
Figure 4.1 System Diagram for CAP1026
4.1
Power States
The CAP1026 has three operating states depending on the status of the STBY and DSLEEP bits.
When the device transitions between power states, previously detected touches (for inactive channels)
are cleared and the status bits reset.
1. Fully Active - The device is fully active. It is monitoring all active Capacitive Sensor channels and
driving all LED channels as defined.
2. Standby - The device is in a lower power state. It will measure a programmable number of channels
(as determined by the Standby Channel register - default none). Interrupts will still be generated
Revision 1.1 (08-05-09)
SMSC CAP1026
DATA2S8HEET
SMSC [ SMSC CORPORATION ]
