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AAT3172 flash programming with AS²Cwire serial interface

Posted: 19 Jun 2008     Print Version  Bookmark and Share

Keywords:flash programming  serial interface  LED driver 

AAT3172 is a software-programmable flash LED driver with two independently programmable constant-current LED channels. Using only a single wire, AnalogicTech's Advanced Simple Serial Control (AS²Cwire) serial interface provides complete flash LED control. Two independently programmable constant-current LED channels enhance flash LED control flexibility and allow multiple LEDs to be driven with regulated current. AAT3172 can also be programmed into a constant output voltage mode such that, for example, keypad lighting and flash LED control can be combined. Know the programming techniques for camera phone flash applications and corresponding performance considerations. Based on example application scenarios, follow the programming steps to gain a clear understanding of AS#178;Cwire usage with the AAT3172.

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