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EE330 FINAL PROJECT
Digital clock / Alarm
By: Abdelmagieed Ibrahim & Jie-Hue Yan
TA: Robert Buckley
Introduction
• In this project we design a digital clock with output of 4 seven segments. First 2 represent number of seconds , and the other 2 represent number of minutes. Also this project work as timer with Alarm output.
Components
• Ring oscillator
• Clock divider
• Up/Down counters
• BCD
• Decoders
• Outputs / inputs
• Control gates
Ring oscillator
Ring oscillator freq around 2.5Mhz
DFF to lower Frq
Clock divider
Clock divider output
Up counter
Single up counter output
BCD using 4 (4-bits up counter)
BCD using 4 (4-bits up counter)
2 cascade up counter output
4-bits Down-counter
Down counter output (start at 9 instead 15)
BCD using 4 (4-bit down counter)
Decoder ( 4in (bcd) , 7 out (7seg))
UP counter Or down counter
BUZZ output
Layout
DRC & LVS
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