Microprocessors & Interfaces

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