287 Threads found on edaboard.com: 8051 Schematic
go to the following link ,it provide lot of resorces
I am looking for 8051 schematic or PCB Eagle File with EPROM and I/O Connection for design of applikation. Can somebody help me?
Professional Hardware and Electronics Design :: 30.07.2002 01:09 :: senthilkumar :: Replies: 9 :: Views: 2672
See ,these pages:
(dialer w/ PCD3312 IIC chip
& a 8051 or/+ a TSC73K321LIP TDK Modem)
also see modem diagrams available at:
also follow the links at
Professional Hardware and Electronics Design :: 12.05.2002 13:13 :: BENOIT :: Replies: 7 :: Views: 1615
I'm having problems initializing the 8051. It's P1 ports are driving 4 relays using a ULN2003 driver, the problem is, when I power on the ckt, all relays are switched on and off. I've tried to use a 7414 to invert all P1 ports, but did not work. How to solve it?
Professional Hardware and Electronics Design :: 17.07.2002 21:28 :: 2000 :: Replies: 10 :: Views: 2056
I want Universal Programmer schematic, and Programmer Programing software.
Or anything fit with 8051 :idea:
PC Programming and Interfacing :: 11.01.2003 23:55 :: diver143 :: Replies: 15 :: Views: 6096
there is another good programmer for 8051 family and 28** eeprom series here:
i have built it and its worked properly
Microcontrollers :: 08.02.2003 06:36 :: is_razi :: Replies: 6 :: Views: 5700
how may i interface 8051 mc to sdram ? any schematic and source code?
Professional Hardware and Electronics Design :: 24.02.2003 12:56 :: mystery :: Replies: 4 :: Views: 1995
On this forum are many nice guys able to help you, no doubt about that.
But you must ask properly.
Hi guys ! I need information about programming specification of XXXXX from Atmel (i.e.) and I'm unable to find it on manufacturer site, even under NDA.
Or: I found the specification, but something it's not working as s
PC Programming and Interfacing :: 14.04.2003 01:17 :: silvio :: Replies: 10 :: Views: 1993
i want Siemens C35i Datacable schematic that to be inegrated with 8051 microcontroller
Service Manuals, Requests, Repair Tips :: 31.05.2003 14:14 :: mitesh :: Replies: 2 :: Views: 2839
Hi to all in this forum,
I am searching a shematic miliOhm meter with MPU control (PIC or 8051). It's very important for me this shematic to give fast results - not for more than 5 seconds. Every help is welcome.
Professional Hardware and Electronics Design :: 26.09.2003 10:21 :: PICUser :: Replies: 0 :: Views: 1360
Look for example here:
Microcontrollers :: 30.10.2003 03:56 :: C-Man :: Replies: 10 :: Views: 8948
Please any body provide me 8051 based disgital LED watch schematic & Source code, I am urgent in need of it. With LED diriving circuit for jumbo LEDs
Microcontrollers :: 16.11.2003 13:33 :: mitesh :: Replies: 1 :: Views: 2681
I have built this programmer long time ago but it didn't work.
Does anyone have tried it ?Does it work really ?
Does anyone have a another layout (I don't like the too small pads)
Microcontrollers :: 21.12.2003 11:26 :: SphinX :: Replies: 4 :: Views: 1719
>If it's not can someone send me schematic for it.
any classic schematic with flash 8051.
Do you have any example?
Microcontrollers :: 31.01.2004 04:00 :: Taro :: Replies: 5 :: Views: 925
I want to use AT89C51 or AT89C52 to implement FSK modulation.Can anyone help me ! schematic or source code
Microcontrollers :: 11.01.2004 12:29 :: HSAMS :: Replies: 0 :: Views: 690
go to www.21ic.com(IN china).
it's forum have some 8051 debugger schematics and program code.
Microcontrollers :: 17.06.2004 21:04 :: alphi :: Replies: 8 :: Views: 1926
as far as I remember the 8051 has a weak pull-up current source of about 100uA at his ports. It is not able to drive a ULN2803! You will need an external pull-up resistor. The current consumption is to high for more channels.
An external FET is only a solution if it is a logic-level FET ! You need a flyback diode.
The best way is to use a intell
Electronic Elementary Questions :: 29.12.2004 09:58 :: felix1200 :: Replies: 14 :: Views: 5234
You can use the 8051 UART and the USB-UART Bridge CP2102 from Silicon Laboratories.
PC Programming and Interfacing :: 03.01.2005 05:30 :: svicent :: Replies: 19 :: Views: 3331
i find it really hard in configuring the modem using the ?contoller. How can i place an AT command using ?contoller?for example, how can i send ATA string to the modem,so that it can answer a call..
Microcontrollers :: 06.01.2005 12:34 :: ricpax :: Replies: 2 :: Views: 726
Seems that the keylogger really burns your fingers.
Because you didn't succceed to find one circuit diagram based on AVR, at the end turns to AT89C2051.
Programmer for AT89C2051:
At the bottom page you'll find links to other programmer if the one above don't works as you e
Microcontrollers :: 06.03.2005 05:12 :: silvio :: Replies: 40 :: Views: 47437
Handtronix has a nice appnote on how to connect a LCD to the 8051
"Interfacing a 128 x 64 Graphic Module with an 8 bit Micro-controller describes the software and hardware to display an image on a Hantronix HDM64GS12. This note includes schematic, flow chart and sample software in 8051 assembly language. (76k) "
Microcontrollers :: 12.03.2005 13:25 :: Wizzard :: Replies: 3 :: Views: 4756
Below is a link to a microcontroller based clock:
Although it is based on the AT892051 the hardware + software are 8051-compatibile ..
And here is a link on how to interface a LCD display:
Microcontrollers :: 04.04.2005 23:11 :: IanP :: Replies: 3 :: Views: 719
You can start at:
Here are some other sites:
Assorted on 8051 core
8051 + LCD + Keypad
Microcontrollers :: 10.04.2005 01:14 :: IanP :: Replies: 4 :: Views: 1700
Here is a link to EVB8051:
Embedded Systems and Real-Time OS :: 18.04.2005 04:03 :: IanP :: Replies: 3 :: Views: 1434
I am looking for a schematic of Sound level Meter in dB, must be PIC Micro based or 8051 Based.
Microcontrollers :: 02.05.2005 04:09 :: glenjoy :: Replies: 0 :: Views: 1709
Here is a link to 8051 microcontroller extended system:
If you build it for your training purposes, you will never regret a little bit of extra effort, but you will be able to test a I/O device, internal/external EPROM/ROM, internal/external RAM etc.
Go for it, mate ..
Microcontrollers :: 14.05.2005 08:48 :: IanP :: Replies: 2 :: Views: 1786
This extracted figure of the book
The 8051 Microcontroller
ARCHITECTURE, PROGRAMMING, and APPLICATIONS
Kenneth J. Ayala
contains the hardware that you request.
Electronic Elementary Questions :: 19.07.2005 14:06 :: svicent :: Replies: 3 :: Views: 2081
I've been trying to use the ADC 0808 with a 8051 microcontroller, to build a robot. Now the problem is that the ADC only gives me the digital output only ONCE, when I switch on the circuit. It SHOULD be continuously giving me values, but it just gives me a value at startup.
Can you help me out!?
Thanks in advance.
Analog Circuit Design :: 02.09.2005 15:41 :: AbsarShah :: Replies: 2 :: Views: 1247
The instruction set = instruction set of standard 8051 (except the instructions timing).
schematics for simple application = schematics of simple application of standard 8031 (ROM-less 8051, needs external ROM).
Manual can be easily found at Dallas Semiconductor website, (will redirect to Maxim, but it's OK as they merg
Microcontrollers :: 21.09.2005 11:50 :: wek :: Replies: 1 :: Views: 653
One of the simplest methods of interfacing a thermocouple to 8051 microcontroller is 1-wire technology ..
Here is an example of an IC which will take signal form J-thermocouple, condition it and convert it to digital form that can be read by a microcontroller:
If you need more information on 1-
Microcontrollers :: 27.11.2005 19:53 :: IanP :: Replies: 4 :: Views: 1680
hy i wander if you can tell me some sites with 8051 evolution boards (shematics) or other informations. tnx
Microcontrollers :: 23.12.2005 05:11 :: cipriotis :: Replies: 4 :: Views: 743
I am trying to interface an 8051 microcontroller with an external EEPROM and SRAM, I am not very sure how to go about doing it. Could someone please give some inputs or are there any books or websites, i could refer to. Thank you.
Microcontrollers :: 27.12.2005 05:13 :: vinash :: Replies: 5 :: Views: 3766
I am working on sensors, and my project consists of collecting the datas real time from the sensors and storing them in a SD card. I do not have prior knowledge of working in this field. I would be very grateful, if someone were to guide me in this and provide me with some resources. Thank you....
Robotics and Automatics Forum :: 07.01.2006 01:53 :: vinash :: Replies: 4 :: Views: 7408
Use MOC3042 to isolate 8051 and the triac. THis one has zero crossing cct to minimize swithing noise.
Microcontrollers :: 01.02.2006 11:46 :: techie :: Replies: 3 :: Views: 1691
i wana made remote controller sytem tx and rx
on 8051 controllers
i need help
plz reply this topic
Microcontrollers :: 02.02.2006 12:53 :: tiksh :: Replies: 6 :: Views: 1175
while searching on net this is what i found for AVR ISP
i hope it will help on 8051 ISP too.
may be it will need login in to forum.
Microcontrollers :: 23.03.2006 07:11 :: jayeshvadgama :: Replies: 23 :: Views: 8224
I have a question . I want to send a pulse to a 8051 microcontroller when one of the keyboard arrow keys is pressed and after that the microcontroller moves the stepper motor(or servomotor) to the specified direction . How can I do it? I'll do appreciate you if you give me Assembly/C Source code for performing this operation .
PC Programming and Interfacing :: 24.03.2006 00:14 :: AlirezaAAA :: Replies: 7 :: Views: 1597
Can anyone please teach me how to design a 89s51 running text display ?
Using 8x8 matrix led... Or 5x7 matrix led, but with 14pins one...
What component to use ?
How is the schematic diagram look like?
Note : I'm a beginner....
Thanks for all
PCB Routing Schematic Layout software and Simulation :: 24.03.2006 10:15 :: Atunk :: Replies: 1 :: Views: 3147
I'm looking for a lcd frequency meter schematic but I must use at 8051
I searched this forum, but I did'not fınd
Can anyone help? Thanks
your question is not so clear, do u mean u want a schematic for frequency meter using an LCD interfaced to the 8051 micro controller???
Microcontrollers :: 27.03.2006 06:24 :: eng_ahmed22 :: Replies: 2 :: Views: 987
use Search in this forum, I post and upload schematic with source code to microcontroller 8051 (at89s8252) if you not found tell me and I post it again
Microcontrollers :: 24.04.2006 04:45 :: aldevan :: Replies: 3 :: Views: 1537
i want to interface the keyboard (one having 101 keys; attatched to PC) to the 8051... i've got only 7 unsed pins... is it possible to it uisng only 7 pins... if yes, how??? please give schematic, some source code or any other good tutorial... thx!!!
Microcontrollers :: 02.06.2006 01:09 :: hot_ice :: Replies: 4 :: Views: 1148
I HAVE THE SAME PROJECT USING LM35 WITH THE 8051UC I REQUEST FOR THE COMPLETE DETAIL OF THE PROJECT AS I AM NEW IN THE FIELD START FROM THE BASICS WHAT I HAVE TO DO ??????????????????
Added after 1 minutes:
I HAVE TO RUN A ALARM ALSO USING TEMPRATURE SENSING AND UCONTROLLER 8051
Microcontrollers :: 08.06.2006 12:46 :: KHANOO :: Replies: 7 :: Views: 6057
Please give detail schematic for smart card (i.e as only EEPROM) with 8051 as well as programming details of it. I want to use this system for attendance system. The smart card is having 1K or 2K EEPROM memory only which is written as well as read by mocrocontroller 8051 with PC connected system.
Microcontrollers :: 20.06.2006 03:46 :: sangmeshwar :: Replies: 4 :: Views: 3095
Check out this diagram, Port-0 doesnt require pull-ups if used as external data/address bus. The external devices like RAM, EPROM have internal pull-up which are enabled when OE\ pins is set low. Any external pull-up on port-0 may cause bus-contention since RAM/EPROM cannot sink fair amount of current to make a pin low.
I've use such configurati
Embedded Systems and Real-Time OS :: 30.06.2006 13:47 :: CMOS :: Replies: 15 :: Views: 3076
please help me for download 8051 programming kit's circuit diagram
from which site can i download it
Microcontrollers :: 13.07.2006 00:09 :: ajeeshmonar :: Replies: 3 :: Views: 3161
go to this sit. it is so good for biginners
also u can use KEIL to creat a program using c language
to generate the .hex file
then use any programmer to burn the chip with the .hex file, see this:
hope that help u
Microcontrollers :: 19.07.2006 05:01 :: eng_ahmed22 :: Replies: 2 :: Views: 1177
It makes no sense to modulate your signal using only the 8051. Try to use a pair of low-cost PLLs. Using CD4046, for example, you can achieve buadrates as high as 4800. I will try to upload a schematic asap.
Microcontrollers :: 14.08.2006 11:46 :: x_zoli :: Replies: 1 :: Views: 540
I want any 8051 programmer schematic
it canbe through usb or parallel port pr serial port
it is prefered to be through usb
Microcontrollers :: 03.09.2006 11:32 :: mohamed saleh :: Replies: 13 :: Views: 8644
how are you .
And thanks for your good site .
Please about sensor ultrasonic and circuit sensor for connect to 8051 and how work it ,please put article in site .
Of course I buy one sensor but I don?t know how work it and how can connect with 8051 (PARTs of sensor mean s
Microcontrollers :: 13.09.2006 05:02 :: hd_uni_pro :: Replies: 2 :: Views: 2494
I have a pair of RF TX and RX(433Mhz,ASK,digital). I want to implement encoder/decoder by using 8051.
I would like to ask for the source code(Assembly code) and the schematic of encoder/decoder by using 8051.
Microcontrollers :: 19.09.2006 05:17 :: eugenehhk :: Replies: 0 :: Views: 805
i want to do a door lock with 8051 or avr
is there any schematic or link
Microcontrollers :: 25.10.2006 10:15 :: mohamed saleh :: Replies: 1 :: Views: 1520