EasyManua.ls Logo

Cmsemicon SC8F577 Series - Touch Button

Default Icon
181 pages
Print Icon
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Loading...
V1.8
SC8F577x
147 / 181
www.mcu.com.cn
19. Touch Button
19.1 Touch Button Mod General
The touch detection mod is an integrated circuit designed to realize a human touch interface. It can
replace mechanical touch buttons to achieve a waterproof and dustproof, sealed and isolated, sturdy and
beautiful operation interface.
technical parameter:
1-8 buttons are optional
Adjustable sensitivity by change external touch capacitance
Touch button effective response time lower than 100ms
16 bit high-precision CDC (digital capacitance converter) and the capacitance change on the IC sensing
disk (capacitance sensor) are used to recognize the touch action of persons fingers.
8 touch
channels
...
TK0
TK1
TK2
TK7
KCHS[3:0]
CAPIO
capacitance
converter
Analog filtering
Resistance
partial voltage
Digital
filtering
COMP
FOSC
Count mode
KEYDATL
KEYDATH
Prescaler
1,2,4,8
KCLK[1:0]
KVREF[1:0]
Fig 19-1: Diagram of internal circuit

Related product manuals