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AT25DF021-SSH Datasheet(PDF) 3 Page - ATMEL Corporation |
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AT25DF021-SSH Datasheet(HTML) 3 Page - ATMEL Corporation |
3 / 13 page AVR32918 3 32159A-AVR-01/11 Figure 3-2. Functional overview of the Atmel UC3-A3 XPLAINED kit. 3.1 Preprogrammed firmware The Atmel AT32UC3A3256 on the Atmel UC3-A3 XPLAINED kit is preprogrammed with a USB bootloader and a default firmware. The preprogrammed firmware in the AT32UC3A3256 is a simple demonstration of the QTouch button and QTouch slider. 3.2 Power supply The kit needs an external power supply that can deliver 5V and up to 500mA. The actual current requirement for the board is much less than 500mA but in order to be able to power possible expansion boards this margin is needed. The power can be applied to the board either via the USB connector or on pin 10 on the header J3. The USB connector is the preferred input because then it is possible to connect expansion boards on top of the J3 header. The 5V is regulated down to 3.3V with an on board LDO regulator, which provides power to the entire board. Expansion top boards that require 5V will get this from the header J3 pin 10. 3.3 Measuring the AT32UC3A3256 power consumption As part of an evaluation of the AT32UC3A3256, it can be of interest to measure its power consumption. The two-pin header with a jumper mounted on it is the only |
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