Blink Mode and Frequency Configuration

SLCD can be configured to blink all or selected LCD segments. Segments will alternate between ON and OFF state at the frequency given by the selected frame counter.

The blinking feature is configured in the Blink Configuration register (BCFG):


A segment will blink only if it is already ON - otherwise it will remain OFF.

In this case for the Segment LCD1 Xplained Pro LCD glass maximum we have four COM lines. Segment 0 and segment 1 are both connected to COM0 to COM3. Maximum eight segments can be configured to blink individually.


The BCFG register cannot be written when blink is enabled. The blink frequency can be modified. Before updating the new blink frequency the selected frame counter has been disabled.