43 Threads found on edaboard.com: atmega8 Fuse
atmega8 fuse Calculator
AVR fuse Calculator for atmega8
here you are
Microcontrollers :: 19.09.2010 03:46 :: zoro1 :: Replies: 4 :: Views: 3419
i am not finding any read lock bit in atmega8,
is ther any read lock bit or fuse in atmega8??
how to read protect a atmega8??
Microcontrollers :: 09.11.2006 03:18 :: arnab.bhaumik :: Replies: 2 :: Views: 1437
Possibly you set up an external clock source.
Programming AVR fuse bits ? oscillator settings
Life-giving to atmega8
Microcontrollers :: 17.01.2007 08:45 :: Mindaugasu :: Replies: 4 :: Views: 1156
I want to disable the hardware reset pin of atmega8 and use it as an IO pin. Can any one please give me a C / WinAVR code example of how to do it? Thank you.
Microcontrollers :: 05.09.2007 03:00 :: RollingEEE :: Replies: 14 :: Views: 2594
i want to see the atmega8 adc result on my pc i am using bascom avr
terminal emulator displaying the following code whatever i print
can any one help me
Microcontrollers :: 01.10.2007 05:05 :: zohaib :: Replies: 7 :: Views: 2002
I am in to strange problem could not understand yet. I have been working with ATMEL MCU atmega8 with many projects using UART, SPI, i had no problem, but now recently, i bought few atmega8 and using Internal Osc. 4Mhz but it is not working and ihave connected another device at SPI it is also not working. the MCU TX / RX not working. B
Microcontrollers :: 02.11.2007 19:36 :: sakaz :: Replies: 5 :: Views: 1470
I program atmega8.Now i want to protect the chip so that no one can read its hex code.What should i do?
Microcontrollers :: 31.12.2008 03:59 :: mansoorkhawar :: Replies: 1 :: Views: 1141
How to recover wrong fuses settings on a AVR say atmega8 ? may be isp disabled (cannot detect chip error-24).don't suggest HV programmer method pls suggest any easier way to recover .
i am using pony prog2000.thanks.
Microcontrollers :: 01.10.2010 06:14 :: santoshaxl :: Replies: 8 :: Views: 6121
The external crystal oscillator can be enabled with setting fuse bit in atmega8
BE CAREFUL WHILE CHANGING fuseBITS
Best of luck
Microcontrollers :: 21.01.2011 06:59 :: nandhu015 :: Replies: 3 :: Views: 1918
I have been checking my inventory of ATMegas and here are the results:
ATMega32L Plastic Packing (Reel of 10) SPIEN fuse programmed
ATMega16L Plastic Packing (Reel of 10) SPIEN fuse programmed
atmega8L (Reel of 25) 7 already used 18 present 7 used did not have SPI fuse programmed, checked the remaining 18, none of them (...)
Microcontrollers :: 10.03.2011 10:15 :: abidr :: Replies: 9 :: Views: 1666
I would like to know if someone had made this arrangement Satfinder Elektor March 2011 to find out what fuse box for the atmega8, I'm a little lost (even many) I visited the site [http : / / but I can not understand how to take control in the dropdown menu, I know the installation uses an
Microcontrollers :: 23.04.2011 09:02 :: jeanmichel63 :: Replies: 0 :: Views: 583
I meant the atmega8 datasheet.
Assuming your observations are correct, I see two possible reasons, why the device can't be accessed by a serial programmer:
- It's damaged
- The SPIEN fuse has been previously reset by a parallel programmer. In this case, a parallel programmer would be needed to re-enable it.
Microcontrollers :: 22.06.2011 01:58 :: FvM :: Replies: 4 :: Views: 730
Just program my atmega8L on PonyProg with this
Now after WRITE button I can't read it anymore //:cry:
I think I had DISABLE the SPIEN pin? but the SPIEN is greyed...
Microcontrollers :: 30.06.2011 06:48 :: kasamiko :: Replies: 27 :: Views: 2651
Hi, need me help.
I make programmer for AVR microcontrollers, with atmega8.But I'm not sure whether I correctly set fuse bits. I am read datasheet but I don't understand fully datasheet. I am set low fuse bits 0xD9 and high fuse bits 0xE1. I using 12MHz quartz oscillator. Lock bits i don't touch and it is set as default at (...)
Microcontrollers :: 03.11.2011 21:32 :: rade908 :: Replies: 6 :: Views: 3335
i have a atmega8 i can program it but it theres no output at pc0
Microcontrollers :: 02.12.2011 01:37 :: prabh :: Replies: 4 :: Views: 599
These setting for atmega8 are not working.
I want to use internal oscillator.
Microcontrollers :: 10.12.2011 05:51 :: prabh :: Replies: 0 :: Views: 281
Good morning at all.
I want built this:
I need to change the fusebits of the atmega8.
1) first i flash with hex files and only AFTER i change the fusebits?
2) When i have changed the fusebits (ext. rc. osc. to 12 mhz) , i can not do it anymore (reprogrammed)?
3) the setting with
Microcontrollers :: 31.05.2012 11:57 :: orsa99 :: Replies: 6 :: Views: 946
It is an USB RS232 I/O port module ? an USB-RS232 adapter based on the following project:LINK . The device uses processor atmega8 with quartz
Show DIY :: 19.06.2012 05:25 :: Vermes :: Replies: 0 :: Views: 1141
Hi , I have an atmega8 with its clock fuses unknown !!
I want to program it but I dont know what type of oscillator to use
is there anyway to restore the fuses to original state (1 Mhz internal oscillator)???
I have a USBasp programmer only .
Microcontrollers :: 21.06.2012 14:55 :: anonymous. :: Replies: 2 :: Views: 611
i write a wrong fuse bit for my atmega8 .
and i can't programming it via my usb asp programmer .
and in data sheet i find an parralel high voltage prorammer.
and i find this video high voltage can reset my fuse bit ? .
Microcontrollers :: 01.07.2012 10:00 :: 5282604 :: Replies: 5 :: Views: 3518
I'm divorcing atmega8 from my work bench. Its a bad one. PIC is much better.
The chances of this being m8 fault are close to none unless you have a faulty device.
You can blame your code or your compiler, your choice ...
Microcontrollers :: 19.09.2012 15:16 :: alexan_e :: Replies: 23 :: Views: 1003
Jtag enabled etc
There is no JTAG in atmega8.
Looking at the attachment fuse for internal 8MHz is correct.
Do you need bootloader which is selected for 1024 bytes in your attachment.
Microcontrollers :: 24.09.2012 02:14 :: nandhu015 :: Replies: 10 :: Views: 1099
I've read some tutorial about atmega8 USART.
I tried to write a simple program, which send a character 'a' to serial port.
I used Realterm to connect to MicroController, but received character was not direct (wrong text).
(I also tried to use Hyper Terminal, but sometime text is displayed in screen (wrong text), sometime nothin
Embedded Systems and Real-Time OS :: 27.11.2012 06:21 :: gonewiththewind1312 :: Replies: 12 :: Views: 1010
I used in the first time an external crystal to 12 mhz and for the setting, i selected ext. RC Osc. 12 mhz . If i want to change the fusebits of the atmega8 for other use, the connection with the square generator is the only way?
There is no other way?
Now this is even more conf
Microcontrollers :: 15.12.2012 10:21 :: rohitkhanna :: Replies: 19 :: Views: 457
When you start the programmer, there are three tabs, use the third tab for fuse bit settings.
If you wish to write those bits, use the check box and then write it. see the attached image.
the value of fuse bits and lock bits can be calculated using the
Microcontrollers :: 12.04.2013 19:18 :: ark5230 :: Replies: 1 :: Views: 452
Can anyone tell me how to use an internal RC oscillator as a clock source in atmega8?
I have searched a lot about that and found, there should be configuration bits programmed using ponyprog2000. But when i program configuration bits my program cant be run and when i connect external oscillator between XTAL1 and XTAL2 the program execution speed
Microcontrollers :: 15.02.2013 23:51 :: Briez :: Replies: 1 :: Views: 1160
In an attempt to get reliable firmware for 89S51/52 USBASP programmer I tried to copy hex file from a ready made programmer as I could not find what firmware to use from the that process I copied the lock bits also.
Later I realised tha
Microcontrollers :: 12.04.2013 19:19 :: ark5230 :: Replies: 5 :: Views: 239
I programmed the RSEDISBL fuse of atmega8 to get one more I/O pin, then the ISP function not worked any more. Is there any way to restore the fuse to default value?
My programmer (superproLx) does not support atmega8.
Microcontrollers :: 05.12.2003 03:31 :: Epegic :: Replies: 1 :: Views: 1266
That is right. u can enable the serial mode by programming the microcontroller in parallel mode. I made the same mistake with atmega8. I worte a program for Pic16F877 and reenabled the serial mode of programming by only reprogramming the fuses of atmega8. Just read the pdf of the controller, write a program for 8051 or any (...)
Microcontrollers :: 16.08.2005 00:17 :: waseem :: Replies: 2 :: Views: 1199
Hi all, I;m new in AVR. I've just built one ADD parallel port programmer to program AVR, software is ispprog.
(1)I connect the MOSI, MISO, SCK, RST, GND, VCC pin to atmega8535. i was able to program it.
(2) I connect MOSI, MISO,SCK,RST,GND,VCC pin to Attiny2313. I cant program it. Only after i add in a crystal to the Xtal1 and Xtal2 pin of Att
Microcontrollers :: 06.01.2007 12:20 :: wakaka :: Replies: 9 :: Views: 5195
Hrm, that program doesnt work either .. when i select detect i get this msg:
Checking programmer type ...
Timeout during COM-port read operation!
Supported programmer not found on Com Port 2
Programmer is on port Com2, cause i tried to connect to it from avrstudio. It connects to programmer, it updated firmware on it, but cant enter program
Microcontrollers :: 21.02.2009 02:45 :: ScOe :: Replies: 170 :: Views: 92439
I have Made a USBasp programmer mentioned on
it successfully programs atmega ICs...i use extreme burner software aswell as progisp...
but now im trying to make it program AT89XX series
i programed atmega8 ic with the usb51 software given in
Microcontrollers :: 12.01.2010 10:42 :: sidy50 :: Replies: 3 :: Views: 2378
The USB asp programmer is a tried and trusted programmer. ATMega48 or atmega8 either one may be used as a firmware chip and two different firmware .Hex files may be found for each of the same. You need to program the firmware given in respective device with given fuse settings and when programmed, your Programmer is ready to be used when
Microcontrollers :: 21.02.2011 00:57 :: pranam77 :: Replies: 8 :: Views: 1095
any idea how to use reset pin of atmega8 as gpio and still able to program the device
PLD, SPLD, GAL, CPLD, FPGA Design :: 25.04.2011 08:40 :: sherazi :: Replies: 2 :: Views: 458
i am building a USBAsp based AVR burning kit by using the schematic provided at - USBasp - USB programmer for Atmel AVR controllers
I am using the latest firmware.
I set the fusebits as hfuse=C9 and lfuse=EF (this is defined in the USBAsp makefile)
[but some people have mentioned some different fuse
Microcontrollers :: 05.06.2011 14:24 :: hotshot05 :: Replies: 2 :: Views: 1194
It is a high performance workshop power supply with regulated tension 0-30V and regulated current limit 2mA-5A, with overload protection.
A multimeter displays tension, current, current settings and mAh transferred
Show DIY :: 26.10.2011 14:41 :: Vermes :: Replies: 0 :: Views: 1887
I think you are trying to transfer the meter reading to another microcontroller atmega8 for further processing if it is so, the whole thing has to be radically modified.
Microcontrollers :: 12.12.2011 19:02 :: ark5230 :: Replies: 6 :: Views: 2156
can anyone teach me how to burn fuse bits in a atmega8.first i burnt the lower and higher fuses separately.then my AVR became the second time i burnt both the fuses together.then error was shown.i dont know what to do?
Microcontrollers :: 09.03.2012 09:49 :: vichuutan :: Replies: 1 :: Views: 264
i have problem with programming atmega16 because it give me error to found chip.
but when i proramming atmega8 it programming well.
to programming atmega16 i must select slow clock mode to be able to programming atmga16 . but it make programming very sloooooow :x .
Microcontrollers :: 20.05.2012 09:03 :: 5282604 :: Replies: 2 :: Views: 324
Try this :
NOTES FOR ACCEPT AT89S series
1. PROGISP172 firmware-> USB51/main.hex when burning firmware to atmega8, set fuse bit Low fuse=EF, High fuse=C9 also use this Circuit
2. Reset Circuit for AT89S (S-series), the Capacitor (Elco) must be 1uF NOT 10uF, so us
Microcontrollers :: 14.06.2012 05:40 :: tpetar :: Replies: 6 :: Views: 369
I am using avrstudio to program atmega8. I know that the clock frequency can be changed in the fuses settings, but How do I change it in the code? Do I need to change anything in the fuses setting if I choose to specific it in the code?
Microcontrollers :: 30.08.2012 19:05 :: Manchested :: Replies: 5 :: Views: 1441
What is the difference between atmega8 and pic 16f917:?: pls give some examples and detailed explanation for these two controllers.....
Microcontrollers :: 23.11.2012 02:53 :: deviganesh :: Replies: 6 :: Views: 646
Please let me know that how to set fuse bits in the ponyprog2000 for atmega8 using serial programming.
Can anyone interested to tell me?
Microcontrollers :: 02.02.2013 02:44 :: imranahmed :: Replies: 1 :: Views: 307