ای سی کلید لمسی (تاچ) سه ورودی با کالیبراسیون اتوماتیک Touch Key
General Description
The BS81x is a series of 2~16 key touch key devices which can detect human body contact using external touch pads. The high level of device integration enable applications to be implemented with a minimum number of external components
The BS81x series devices are equipped with serial or parallel interfaces to allow easy communication with an external MCU for device setup and for touch pin monitoring purposes. Special internal circuitry is also employed to ensure excellent power noise rejection to reduce the possibility of false detections, increasing the touch switch application reliability under adverse environmental conditions
With auto-calibration, low standby current, excellent resistance to voltage fluctuation and other features, this range of touch key devices provide a simple and effective means of implementing touch key operation in a wide variety of applications
Features
Operating voltage: 2.2V~5.5V
Low standby current
Auto-calibration
Reliable touch detections
Standby and normal operating modes
Maximum key on duration time detection
Adaptive voltage drop function
Level Hold, selectable active level- low or high
NMOS output with internal pull-high/CMOSDirect Output
Both serial interface and parallel outputs
Sensitivity adjustment using an external capacitor
Minimal number of external components
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