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SAM4E Datasheet(PDF) 21 Page - ATMEL Corporation |
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SAM4E Datasheet(HTML) 21 Page - ATMEL Corporation |
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21 / 40 page  SAM4E-EK Evaluation Kit [USER GUIDE] Atmel-42067C-SAM4E-EK_UserGuide_022016 2 1 21 4.3.18 LEDs There are three LEDs on the SAM4E-EK board: A blue LED (D2), amber/orange LED (D3) and a green LED (D4), which are user defined and controlled by the GPIO A red LED (D5), which is a power LED indicating that the 3.3V power rail is active. It is also controlled by the GPIO and can be treated as a user LED as well. The only difference with the two others is that it is controlled through a MOS transistor. By default, the PIO line is disabled; a pull-up resistor controls the MOS to light the LED when the power is ON. Figure 4-20. LEDs 4.3.19 SD/MMC Card The Atmel SAM4E-EK has a high-speed 4-bit multimedia MMC interface, which is connected to a 4-bit SD/MMC micro card slot featuring a card detection switch. Figure 4-21. SD Card |
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