Programming calculation using the square wave pulse signal output by the internal timer T0 of the single chip microcomputer-EEWORLD

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The internal timer T0 of the microcontroller works in mode 1, and a square wave pulse signal with a period of 1ms is output from P1.0. It is known that the crystal oscillator frequency of the microcontroller is 6MHZ.

Please (1) calculate the time constant X, using the formula X = 216 - t (f/12)

(2) Write a program list

Solution: Solution: X=216-t(F/12)

=216-0.5*10-3*6*106/12

=FF06H

ORG 3000H

START:MOV TMOD,#01H

MOV TL0,#06H

MOV THO,#FFH

SETB TR0

LOOP: JBC TFO,DONE

SJMP LOOP

DONE: MOV TL0,#06H

MOV THO,#FFH

CPL P1.0

SJMP LOOP

Keywords：MCU Reference address：Programming calculation using the square wave pulse signal output by the internal timer T0 of the single chip microcomputer

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