Lattice iCE40 - Table 11.6. Blink Rate [3:0]

iCE40 Ultra Breakout Board
Evaluation Board User Guide
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FPGA-EB-02034-1.2 17
Breathe Ramp [3:0]
Factor
1111
—
*
Note: Default setting (hardware, software).
Table 11.6. Blink Rate [3:0]
Blink Rate [3:0]
Off Time (s)
1
0000
Always On
0001
1/16 (fast)
0010
1/8
0011
1/4
0100
1/2
0101
2
1
0110
2
0111
4
1000
Always Off
1001
—
1010
—
1011
—
1100
—
1101
—
1110
—
1111
—
Note:
1. By default, the LED On-Time is fixed at approximately one second. If desired, the design may be modified so that On-Time is
symmetrical to the Off-Time. To do this, replace the file LED_control.v with LED_control_sym.v and rebuild the design using the
iCEcube2 software.
2. Default setting (hardware, software).