Tibbo EM1000 - Page 424

413 Programmable Hardware Manual (PHM)
© Tibbo Technology Inc.
If you want to switch an LED ON then set the corresponding data line LOW. In the
following example we set the LEDs like this:
LED #5
LED #4
LED #3
LED #2
LED #1
OFF
ON
OFF
ON
ON
Assuming all the LEDs were off previously (shown in gray), these are our steps.
Each step represents one cycle of the clock line (HIGH-LOW-HIGH):
Clock
Data
LED #5
LED #4
LED #3
LED #2
LED #1
1
LOW
ON
OFF
OFF
OFF
OFF
2
LOW
ON
ON
OFF
OFF
OFF
3
HIGH
OFF
ON
ON
OFF
OFF
4
LOW
ON
OFF
ON
ON
OFF
5
HIGH
OFF
ON
OFF
ON
ON