VK3604 detector equivalent, touch pad detector.
* Operating voltage: 2.4-5.5V
* standby current: 7uA/3.0V,14uA/5V
* Power-On Reset(POR)
* Low Voltage Reset(LVR)
* Key Response Time:
Normal Mode 48mS.
to be implemented with a minimum number of external components.
It provides Direct mode or Toggle mode、CMOS output or Op.
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