BS801B User Manual
Contents
1. 2 LHF pulled low selects Toggle output Touch Key DI KOUT pin status when Condition connected to pull high Key is touched Changes State Changes state Key is not touched Remains in present state Using Touch PAD sensitivity adjust connections to modify the sensitivity of each key Purpose of this Demo Board Verify the Touch Key sensitivity and response time Determine the Sense PAD external casing material thickness Determine the sense PAD area Test the Touch Key IC Specification Characteristics Provide the customer with a Touch Key related PCB Layout for consultation Provide the customer with a demonstration and evaluation gt 2 Troubleshooting When in use the following problems may be encountered Potential Solution Check that whether the battery is not inserted correctly or with the wrong polarity has poor contacts or has no power No actions after battery is installed When a touch action results in abnormal LED Abnormal LED illumination re install the battery to re activate or wait action for about 40 seconds after which the LED will automatically extinguish The CR2032 is low on power and should be replaced Accessories amp Specifications Accessories BS801B Touch Key IC Demo Board includes a BS801B SOT23 6 IC x 1 CR2032 Battery x 1 User Manual x 1 Specifications Model BS801B_ DemoV100 Keys 1 KEY Battery CR2032 Lithium Battery Power Consumption 12. 5uA Standby Mode 3 0uA Normal Mode Size 44mm H x 40mm W x 11mm D Contact us For more information about the touch Key IC please visit our web site at http www holtek com tw touchkey
3. EPA A Sf HOLTEK HOLTEK SEMICONDUCTOR INC HOLTEK Touch Key IC Demo Board BSSO1B User Manual Components Description Demo Board Top Side l Touch Key _ indicator teed Cte D Sensitivity sai Adjustment i Capacitor Cs Lew eee wee ee ee ee Leer eee ee ee ee e e e e e e gq m IC op Key pasl Touch Key a y j sra In PAD SOT23 6 PP a a Key Demo Board Bottom Side Cref PAD ER203 oa a Sensitivity Adjust S Connection i Battery T mm SS N ee Holder Touch PAD ee ee ee gi e e A l LHF Pin Ea Sensitivity djust nos Connection Description bot RR JP1 VDD VDD Q KOUT VSS 3 CON3 LED1 Cref R2 R1 2 7 VDD BATI Key ai a T CR2032 1 0 1uF VSS lt LHF Option gt d Open Level Hold Short Toggle Pe Operating Guide Pull out the insulator between battery and battery holder to power up the Demo Board Ensure that not touching any component when doing this After a key touch action has been verified then the output indicator LED1 and the KOUT pin will be activated with a LEVEL HOLD output The relationship between LHF the output LED1 status and the KOUT pin is shown in the following table 1 LHF floating selects Level Hold output Touch Key LEDI KOUT pin status when Condition connected to pull high o V _Keyistouched On Key is not touched Off 3 0V __
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