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decoder_14seg

readme.md

14 Segment Display Decoder

Status

Simple module to convert 8-bit ASCII data into 14-segment code that can drive a 14-segment display. Supports displaying digits from 0 to 9, letters from A to Z and some other characters. Designed to be used with display_lcd_vim828.

Segments Font

Instantiation

	Decoder14seg Decoder14seg_inst(
		.Clock(Clock),
		.Reset(Reset),
		.Enable_i(),
		.Data_i(),
		.Segments_o()
	);

Port description

  • Clock - Clock signal, active rising edge.
  • Reset - Asynchronous reset, active low.
  • Enable_i - If 1 then display is enabled, if 0 then all segments are disabled.
  • Data_i[7:0] - ASCII code to be displayed.
  • Segments_o[13:0] - Driver output.
    • Segments_o[0] - Segment A
    • Segments_o[1] - Segment B
    • Segments_o[2] - Segment C
    • Segments_o[3] - Segment D
    • Segments_o[4] - Segment E
    • Segments_o[5] - Segment F
    • Segments_o[6] - Segment G
    • Segments_o[7] - Segment H
    • Segments_o[8] - Segment I
    • Segments_o[9] - Segment J
    • Segments_o[10] - Segment K
    • Segments_o[11] - Segment L
    • Segments_o[12] - Segment M
    • Segments_o[13] - Segment N

Simulation

Simulation

Console output

VCD info: dumpfile decoder_14seg.vcd opened for output.
===== START =====
====== END ======
decoder_14seg_tb.v:48: $finish called at 99000 (1ns)