HOW TO SET 5 DIFFERNET ALARMS IN THE DIGITAL CLOCK PGM

Hi Rickey,

I want to add a Totalize Timer function into my RTC w/DS1307 + AT89S51.

Here some details how it will work. The totalize timer will check the condition of port 1.0 (port number for example only, other port available). When this port in low state, it will start the timer to count the time how long this port in low state. When the port in high state, time counting process is terminated and ... Read Compelte post
Other Tags: 8051 timer   DS1307 rtc   
Posted by SGH on Thu May 31 2007, 03:26 AM

8051 Time delay/Timer routine calculator

Software Description from Kaushik, he says....:

It's been a long time I have been developing things for 8051/52 core family and got always stuck with the same old thing. The timer calculations. So I decided to write a small Calculator to do the job for me. It is very basic but hopefully solve most of day to day needs.

Please note you will require MS-Windows'98 or higher and VB runtime DLL's.

--------... Read Compelte post
Author: Kaushik | Date added: Fri Jun 01 2007, 07:41 PM

Interrupt waiting Time 1s

hi joepotter
see this


general formula for timer is

(65536-xx)*machine cycle= delay u want
where xx is a 16 bit no having value of TH0 and TL0

when timer run in 16 bit mode with 11.0592 mhz max delay
that can be generated is 72 ms almost.

now let say u use 12MHz crystal then Machine cycle is calculated
as for every crystal value


(crystal value / 12)= frequency

(1 / frequency) = Machine cycle

now for 12 MHz
12... Read Compelte post

Posted by majoka on Thu Nov 25 2010, 05:33 AM

Conversation

Sat Sep 19 2020, 07:03 PM
Bryansfn
only
Thu Jun 11 2020, 06:27 AM
anudee
sir could please send the code for I2C and wifi interfacing with 8051
scena
Tue May 19 2020, 10:29 PM
Does anyone have microcontroller programming software for STC15F104W (core 8051, 4 k, 128 byte, 6 I/O pin, UART ... DIL8), that works?
Sat May 02 2020, 07:38 PM
Tamu Gurung
Hi I am looking for a assembly language program for a digital decimal counter. Time counts max limit of 2 mins starting from 2.00 mins and ending at 0.00. time is to be displayed on 4 7-segment LED displays. Edsim51 simulator to be used. Thanks
Wed Mar 25 2020, 01:39 PM
Tajammul
Sir kindly send the code file i2c for 8051
ExperimenterUK
Fri Mar 13 2020, 10:36 PM
@ Rohitnani,ABEBE..which project ?
Fri Mar 13 2020, 12:55 PM
ABEBE
how can get hadwere of this project
Rohitnani
Sat Mar 07 2020, 05:11 PM
Sir, Could you please send me the zip file input password....
Wed Feb 26 2020, 04:58 PM
Peter Parker
Is it possible to send multiple messages using only 1 GSM module?
Sat Feb 01 2020, 10:12 AM
Pearl Olin
Hello,

Downloads

Comments

Mirza123
Thu Jun 25 2020, 03:46 PM
eunicelove124
Mon Jun 22 2020, 03:03 PM
cerouno
Tue Jun 16 2020, 05:10 PM
Marce
Sat Jun 13 2020, 09:43 PM
Davidthils
Thu May 21 2020, 12:44 PM
Jakeror
Thu May 21 2020, 01:28 AM
motorCar
Wed May 20 2020, 07:05 PM
Vordrync
Wed May 20 2020, 11:52 AM

Online

Guests: 72, Members: 0 ...

most ever online: 182184
(Members: , Guests: 182184) on 06 Aug 2010: 05:37 AM

Members: 38215
Newest member: Mirza123