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 10 of 29 26-02-2008 well yes, try again, and again.. beleive me, it's worth the hard work! may it not work this time, leave a message here with your observations, and i'll help you to get it working. Thanks very much,I operated the circuit by your circuit diagram,then connected it to PC,and programed with a light flash program,I found the S51 was programed correctly,and worked well.my english is poor,^_^Thanks again. Reply With Quote Posted by: Charin.E on: 17 Apr 2007 Posted by: Ibrahim Kamal on: 17 Apr 2007 Posted by: igno on: 18 Apr 2007 Posted by: Ibrahim Kamal on: 18 Apr 2007 Posted by: kalpesh patel on: 11 May 2007 Posted by: Ibrahim Kamal on: 11 May 2007 Sawasdee Krub,I am a newer in MCU and ISP field from Thailand. I am applying your ISPprogramming software and schematic. But still can not write the code on 'AT89S8253(TQFP)'. I have simple questions as following.1.When pluged the Parellel Port to a computer and 5Vadaptor not yet supply, the indicator LED is lighted. Is it right?2.Can I supply voltage 'Vcc-5V' directly to the Reset pin-4 without a seriated Cap-1uF(Because of the Internal Power-On Reset feature).3.My X’tal is 20MHz,Does this ISP Programmer control SCK-signal frequency properly according to the MAX-1/16-Crystal Frequency and there is dynamic baud-rate depending X’tal- Frequency come along with this?4.I press 'Restart' button and next 'Read Signature', when starting programming the MCU, for recognition,Is it right?(Would you please give me the brief procedure of manual?)5.The ISP programmer reported 'NOT KNOWN(FF,FF,FF)' when finished pressing 'Read Signature' Button ,and when change the new one of MCU and recheck wiring of the schematic, this problem is persisted.Thank you for your sharing and I will do this when I know these enough. It is the good thing.Sorry for not skill in English.Charin.E Yes this is abolutely normal, same thing happends to me... Reply With Quote [Quoting: Charin.E] 1.When pluged the Parellel Port to a computer and 5V-adaptor not yet supply, the indicator LED is lighted. Is it right?2 [Quoting: Charin.E]Can I supply voltage 'Vcc-5V' directly to the Reset pin-4 without a seriated Cap-1uF(Because of the Internal Power-On Reset feature). It's better to keep the Capacitor connected, specially with long cables. (i tried to remove the cap, and some of the programmers didn't work. [Quoting: Charin.E]3.My X’tal is 20MHz,Does this ISP Programmer control SCK-signal frequency properly according to the MAX-1/16-Crystal Frequency and there is dynamic baud-rate depending X’tal-Frequency come along with this? I usually puc the frequency to MAXIMUM and let the software hande it. but when working with long cables, lowering down the frequency can make it safer... [Quoting: Charin.E]4.I press 'Restart' button and next 'Read Signature', when starting programming the MCU, for recognition,Is it right?(Would you please give me the brief procedure of manual?)5.The ISP programmer reported 'NOT KNOWN(FF,FF,FF)' when finished pressing 'Read Signature' Button ,and when change the new one of MCU and recheck wiring of the schematic, this problem is persisted.Thank you for your sharing and I will do this when I know these enough. It is the good thing. Well, here again, what i usually do it to hit the "Erase and program all" button. that's all. [Quoting: Charin.E]Sorry for not skill in English.Charin.E Let us know how it went... good luck [Quoting: Ibrahim Kamal] Yes this is abolutely normal, same thing happends to me... How come you get your led bright without power? Reply With Quote [Quoting: Charin.E] 1.When pluged the Parellel Port to a computer and 5V-adaptor not yet supply, the indicator LED is lighted. Is it right?2 [Quoting: igno]How come you get your led bright without power? Reply With Quote Because the parallel port of the computer can provide some power through it's I/O pins... some people even use that to power their circuits.. but i'ld say it's not good engineering... Reply With Quote 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. 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
In System Programmer (ISP) for ATMEL micro controllers http://www.ikalogic.com/isp.php Page 11 of 29 26-02-2008 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.. Reply With Quote Posted by: Anonymous visitor on: 11 May 2007 Posted by: Ibrahim Kamal on: 11 May 2007 Posted by: kalpesh patel on: 11 May 2007 Posted by: Ibrahim Kamal on: 11 May 2007 [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.. I am using 10M Hz crystal. so, what amount of maximum speed i can use. [Quoting: ] [Quoting: Ibrahim Kamal] I am using 10M Hz crystal. so, what amount of maximum speed i can use. 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.. Well, i usually let the software handle this by chooseing "Maximum speed".. but you can get it by trial and error.. it depends on many things like cable length.. noize.. crystal (for sure)... etc. [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. [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. Reply With Quote
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