Write an assembly language program for 8051 to generate a delay of 1usec using 12 MHz crystal.

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written 7.1 years ago by

teamques10 ★ 70k

• modified 3.9 years ago

Subject : Microcontroller and Embedded Programming

Topic : Asynchronous Serial Data Connection

Difficulty : Medium

microcontroller and embedded programming

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written 7.1 years ago by

teamques10 ★ 70k

Crystal frequency - 12 MHz

T = 12/ 12 X 106 = 1 μsec

Delay period = 1 μsec

Hence a delay of 1msc is required

We will require mode 2 and execute a delay of (lets say) 250 μsec four times.

Suppose we use timer 1 ,

TMOD = …

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