1.2.
Powering up the board
The Atmel AT88CK454BLACK is a USB powered device.
?
Simply insert the board into an open USB port
Figure 1-3.
Atmel AT88CK454BLACK USB powered device
Power LED
1.3.
User definable LEDs
The AT88CK454BLACK includes general purpose LEDs, which are connected to PD4. Both LEDs will light
when PD4 is configured as an input (Hi-Z); otherwise, the LEDs will toggle according to Table 1-1. This
configuration also serves as a power indicator since at least one LED is always on.
Figure 1-4.
LEDs implementation schematic
Table 1-1. Table 1-0 LEDs logic
PD4
0
1
Hi-Z
LED1 (BLUE)
ON
OFF
ON
LED2 (RED)
OFF
ON
ON
8737A – SMEM – 3/11
Atmel AT88CK454BLACK Hardware User Guide
3
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