0

72kviews

Program timer 1 of 8051 to generate 1 KHz square wave on P2.1 using mode 1. Assume crystal frequency to 12 MHz.

written 6.0 years ago by teamques10 ★ 68k

•   modified 5.0 years ago

microcontroller and embedded programming

ADD COMMENT FOLLOW SHARE EDIT

1 Answer

2

6.9kviews

written 6.0 years ago by teamques10 ★ 68k

•   modified 6.0 years ago

frequency = 1KHz

1 pulse = 1/1KHz = 1 msec

500 μsec ON time and 500 μsec OFF line.

Crystal Frequency = 12MHz

1 clock pulse = 1μsec.

Count = 500μsec/1μsec = 500

Counter initial value = 65536 - 500 = 65036 = FE0C

TMOD

Gate	C/T	M1	M0	Gate	C/T	M1	M0
0	0	0	0	0	0	0	1

IE

EA	-	-	ES	ET1	EX1	ET0	EX0
1	0	0	0	0	00	1	0

PROGRAM :

ADD COMMENT SHARE EDIT