Microprocessors & Interfaces

Lecture 30: 8253/8254 Timer: Part 2

Pin diagram of 8253/8254, Control word Format, Programming the Counters, Reading the Counters, Read-Back Command, Counter Latch, Modes of Operation, Mode 0 –Interrupt on Terminal count, Mode 1 Hardware re-triggerable one-shot, Mode 2 Rate Generator (Divide by N counter) Mode 3 Square Wave Generator, Mode 4 Software triggered strobe, Mode 5 Hardware triggered strobe, Reading the counter values, 8254 Read Back control word, Status Register( 8254 only), Examples. Problems and Solutions

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Lecture 29: 8253/8254 Timer: Part 1 (Prev Lesson)
(Next Lesson) Lecture 31: Programmable Interrupt Controller 8259A
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Course Curriculum

Sanjay Vidyadharan
Role : Professor
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