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SAM4E-EK Evaluation Kit [USER GUIDE]

Atmel-42067C-SAM4E-EK_UserGuide_022016

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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