CS-204575-ANP2 CSR8670 Using Capacitive Touch Sensors
CSR8670 supports up to 6 capacitive touch sensors or „pads‟ as an alternative to conventional buttons.
The capacitive touch sensors,capsense, work by balancing the unknown external capacitance of a touch pad against an internal known capacitance, hence measuring the external capacitance.
I was told the capacitive keys features on CSR8670 is not as good as other dedicated chips such as Cypress pSoC and MSP430. It seems very few people use such feature on CSR8670.
I'm in Hong Kong. Sorry I write in English because I need to use Hand-Writing input board for Chinese input which is very slow for me. Hope everybody can tolerate this.