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8254 Programmable Interval Timer

Date post:	11-Jan-2016
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PPT of 8254 programmable timer peripheral IC and its modes

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square wave mode mode

rate generator mode

software triggered strobe

programmable interval

hardware retriggerable

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8254 Programmable interval Timer By K.Praveen kumar reddy

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Page 1: 8254 Programmable Interval Timer

8254 Programmable interval Timer

By K.Praveen kumar reddy

Page 2: 8254 Programmable Interval Timer

Features of 8254 programmable timer

Page 3: 8254 Programmable Interval Timer

Block diagram of 8254

Page 4: 8254 Programmable Interval Timer

Operating modes of counters

Page 5: 8254 Programmable Interval Timer

Control word format

Page 6: 8254 Programmable Interval Timer

Mode 0: Interruppt on terminal count

Page 7: 8254 Programmable Interval Timer

Description of mode 0

Page 8: 8254 Programmable Interval Timer

Mode 1: hardware retriggerable one shot mode

Page 9: 8254 Programmable Interval Timer

Mode 2: Rate generator

Page 10: 8254 Programmable Interval Timer

Mode 3: square wave mode

Page 11: 8254 Programmable Interval Timer

Mode 4: software triggered strobe

Page 12: 8254 Programmable Interval Timer

Mode 5: hardware triggered strobe

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