In System Programming (ISP) for ATMEL chips

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In System Programmer (ISP) for ATMEL micro controllers http://www.ikalogic.com/isp.php Page 12 of 29 26-02-2008 Posted by: kalpesh patel on: 14 May 2007 Posted by: Ibrahim Kamal on: 14 May 2007 Posted by: danny on: 22 May 2007 Posted by: Ibrahim Kamal on: 23 May 2007 Posted by: mvs sarma on: 24 May 2007 Posted by: mvs sarma on: 24 May 2007 [Quoting: Ibrahim Kamal] [Quoting: kalpesh patel] [Quoting: Ibrahim Kamal] [Quoting: kalpesh patel] I am able to read hex file from 89s52 chip but can't erase or write the chip, even though i have tried it on three device but still i can't gate success. so, please help me. Try the following: 1-Put a 10uF capacitor between pin 9 of the uController and the 5V rail.2-Slow down the speed3-make sure PIN 31 (ea) of the uController is connected to 5VThis is mostly the type of problems I found with friends that couldn't get their ISP programmer working... hope this helps.. Actually pin 31(ea) is generally used to select the rom and ram. i think which may came into picture after programming of the device. so, why sould we connect pin31 to Vcc at the time of programming using isp. Let me correct this, Pin 31 (EA) Let the internal processor access external or internal memory. to use ISP, internal memory access must be enabled, in order to let the processor store the received serial data into the internal flash memory. I have done all the things that you have suggested but still i can't get any positive result. [Quoting: kalpesh patel] [Quoting: Ibrahim Kamal] [Quoting: kalpesh patel] [Quoting: Ibrahim Kamal] Reply With Quote [Quoting: kalpesh patel] I am able to read hex file from 89s52 chip but can't erase or write the chip, even though i have tried it on three device but still i can't gate success. so, please help me. Try the following: 1-Put a 10uF capacitor between pin 9 of the uController and the 5V rail.2-Slow down the speed3-make sure PIN 31 (ea) of the uController is connected to 5VThis is mostly the type of problems I found with friends that couldn't get their ISP programmer working... hope this helps.. Actually pin 31(ea) is generally used to select the rom and ram. i think which may came into picture after programming of the device. so, why sould we connect pin31 to Vcc at the time of programming using isp. Let me correct this, Pin 31 (EA) Let the internal processor access external or internal memory. to use ISP, internal memory access must be enabled, in order to let the processor store the received serial data into the internal flash memory. I have done all the things that you have suggested but still i can't get any positive result. The only couple of things that come through my head would be either a damaged or misconfigured parallel port.. did you try it on another pc? Reply With Quote erase..okproblem:write error at adress 00000000 byte written:02 byte read: 00help me please Reply With Quote [Quoting: danny] erase..okproblem:write error at adress 00000000 byte written:02 byte read: 00help me please Did you try all the tips i've posted in this forum?Did you try another chip?Is pin 31 of your atmel chip connected to Vcc?try all the tips in this forum, step by step, you should find what's wrong with your connections, and it should work. Reply With Quote Rge kapilesh patels comments- i would like him to check whether he modified programming frequency at left of SETUP button, to a value less than 1/16th of the crystal frequency used by him.i assemble apiece oncemore y-day and it is working fine- taking a calculated risk i didn't even use the AND gates suugested by IKA-- i use 15MHz crystal and i set the prog frequency to 455 Hz or even 200Hz.i hope kapilesh will comeforward with his commentsSarma Reply With Quote Sorry I spelled worngly It is Kalpesh PatelAlso,i suggest Kalpesh to check the PSU for clean and correct 5V supply. Sarma Reply With Quote
In System Programmer (ISP) for ATMEL micro controllers http://www.ikalogic.com/isp.php Page 13 of 29 26-02-2008 Posted by: Ibrahim Kamal on: 24 May 2007 [Quoting: mvs sarma] Sorry I spelled worngly It is Kalpesh PatelAlso,i suggest Kalpesh to check the PSU for clean and correct 5V supply. Sarma hello Mr sarma.. thanks for sharing :) Reply With Quote Posted by: hadi on: 27 May 2007 Posted by: Kishor Soni on: 01 Jun 2007 is the best Dear sir,Is your ISP Programmer works with windows XP Reply With Quote Reply With Quote Posted by: Ibrahim Kamal on: 01 Jun 2007 Posted by: Abhax on: 01 Jun 2007 Posted by: Ibrahim Kamal on: 01 Jun 2007 Posted by: suetaM on: 01 Jun 2007 Posted by: Ibrahim Kamal on: 02 Jun 2007 [Quoting: Kishor Soni] Dear sir,Is your ISP Programmer works with windows XP Yes it does work on winXP. Reply With Quote You have given the design specification for the cable .... but while setting up the main board wat are the small things to take care of....you mentioned 1)10 microf fromm rst pin to +vcc 2) Ea bar is at +vcc anything else.... Also can i use a 74541 IC instead of a and gate..... further more my parllel port can only output a max voltage of 3.22V as a logic high from the data pins. does the logic high neccessarily have to be above 4.5 volts???? Yes, this should be enough... Yes sure, it's even better! No you dont!, 3.5V is enough, That's because we use a buffer. Reply With Quote [Quoting: Abhax] You have given the design specification for the cable .... but while setting up the main board wat are the small things to take care of....you mentioned 1)10 microf fromm rst pin to +vcc 2) Ea bar is at +vcc anything else.... [Quoting: Abhax]Also can i use a 74541 IC instead of a and gate..... [Quoting: Abhax]further more my parllel port can only output a max voltage of 3.22V as a logic high from the data pins. does the logic high neccessarily have to be above 4.5 volts???? Reply With Quote Hello,I mounted the cable and I'm its ok to read the device.I understand that to read it I need both MOSI, MISO, CLK and RESET signals, cause one is the way of solicitations to 89s51 and other is the way of listening answers.I know both signals are operating ok, cause your software read only FF bytes when one of each cables are not plugged on my protoboard. And when are pluged, I read "real" values.So, all the four signals are operating ok to read, but when I try to write I have the "Write Error at adrress 0 ....." error.I tried to put the capacitor 10uF to the source and the error continues.I tried with four microcontroler, all showed the same error.So, some idea?I unbelieve the problem is at 89s51 cause it's understanding my solicitations and answering.Other question... where do I found 89s51 ATMEL ISP programmer? Thanks,suetaM Reply With Quote [Quoting: suetaM] Hello,I mounted the cable and I'm its ok to read the device.I understand that to read it I need both MOSI, MISO, CLK and RESET signals, cause one is the way of solicitations to 89s51 and other is the way of listening answers.I know both signals are operating ok, cause your software read only FF bytes when one of each cables are not plugged on my protoboard. And when are pluged, I read "real" values.So, all the four signals are operating ok to read, but when I try to write I have the "Write Error at adrress 0 ....." error.I tried to put the capacitor 10uF to the source and the error continues.I tried with four microcontroler, all showed the same error.So, some idea?I unbelieve the problem is at 89s51 cause it's understanding my solicitations and answering.Other question... where do I found 89s51 ATMEL ISP programmer?Thanks,suetaM well, let's start from the begining, did you connect pin 31 to 5V, and a crystal oscillator on 18 and 19?try slowing down the process from the ISPprog software..what is the length of the cable?Try another power supply, if the power supply is not clean and too noizy it gives me the same symptomes. try operating from a battery and a 7805 regulator...let us know how it went.. good luck Reply With Quote Posted by:
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