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AS3668 Datasheet(PDF) 29 Page - ams AG |
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AS3668 Datasheet(HTML) 29 Page - ams AG |
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29 / 60 page  www.austriamicrosystems.com/AS3668 Revision 1.11 29 - 60 AS3668 Data Sheet - D e t a i l e d D e s c r i p t i o n Figure 39. Timing for Automatic Pattern Startup 8.8 General Purpose Input / Output The pin GPIO/AUDIO_IN is a general purpose input / output which is shared as a audio input for music synchronization. The pin can support the following features: Digital Schmitt Trigger Input Digital output with open drain functionality Analogue Audio input for audio controlled LEDs PWM input for CURR1, CURR2, CURR3 and CURR4 (max. 1MHz) Device Start-up in Automatic Pattern Generation mode Figure 40. General Purpose Input / Output Block diagram Table 24. Automatic Pattern Start-Up Parameters Symbol Parameter Condition Min Typ Max Unit tr_CURR Rise time for dimming up CURR1 2.62 s tf_CURR Fall time for dimming down CURR1 2.62 s ton_CURR On time for CURR1 49 ms toff_CURR Off time for CURR1 0.54 s ICURR1 Output Current for CURR1 6.4 mA |
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