topic Re: How to program MC68HC705JP7CDWE microcontroller? in 8-bit Microcontrollers

How to program MC68HC705JP7CDWE microcontroller?

steveong — Fri, 12 Jul 2013 06:41:22 GMT

Hi all

I am new to this forum.

Currently I have some MC68HC705JP7CDWE microcontroller that I need to program. I understand that they are obsolete. May I check if there is any programmer (commercial available or DIY) I can use/make to program it? Can I use codewarrior for this purpose?

Also, does anyone have any idea on the function behind the series? ie MC68HC705 = HC05 family, JP7 => ? Because I found in the web that can be used to program MC68HC705B16. Can I use to program MC68HC705JP7 series also?

Thanks

Regards

Steve

Re: How to program MC68HC705JP7CDWE microcontroller?

ZhangJennie — Fri, 12 Jul 2013 09:13:22 GMT

freescale doesn't have a codewarrior version that can support HC05 chip. while as far as i know P&E still has product can support HC05.

http://www.pemicro.com/products/product_viewDetails.cfm?product_id=148&menu_id=details&CFID=1769415&CFTOKEN=b34d2f615c505fc4-352316B6-1E67-4D2B-C9E4632C3E9EB825

for more information please contact P&E support http://www.pemicro.com

Re: How to program MC68HC705JP7CDWE microcontroller?

steveong — Fri, 12 Jul 2013 09:35:29 GMT

Hi Jun Zhang

Thanks for the information, I will seek P&E for help.

Regards

Steve

Re: How to program MC68HC705JP7CDWE microcontroller?

ZhangJennie — Fri, 12 Jul 2013 09:39:25 GMT

you are welcome!

Re: How to program MC68HC705JP7CDWE microcontroller?

bigmac — Fri, 12 Jul 2013 12:59:50 GMT

Hello Steve,

The '705JP7 dates from the early 1990s, and it was usual practice to purchase an "evaluation board" from Motorola that catered for program development. The board also provided for OTPROM programming. A single evaluation board would be applicable to only one or two device types with similar pin-outs.

For some of the devices, it was also possible to program them using a special hardware arrangement, in conjunction with an external EPROM that contained an image of the code. However, I have not been able to find the datasheet for the 'JP7 to see what was required for this device. To my knowledge, the programming algorithm was never publicly documented (although this was the pre-Internet period).

You may also find that some commercial PROM programmers of that vintage were also able to program a range of Motorola MCU devices.

Regards,

Mac

Re: How to program MC68HC705JP7CDWE microcontroller?

steveong — Sat, 13 Jul 2013 16:31:29 GMT

Hi bigmac

Thanks for the information. Yup, guess I have to turn to vintage collectors to get a evaluation board as I tried P&E and they do not supply such boards. Hope I can get them soon.

Have a great weekend!

Regards

Steve

Re: How to program MC68HC705JP7CDWE microcontroller?

bigmac — Sun, 14 Jul 2013 04:40:06 GMT

Hello Steve,

After a quick search, I found the following information.

http://www.freescale.com/files/microcontrollers/doc/data_sheet/MC68HC705JJ7.pdf

It is also possible that some commercial programmers may still be able to program the device. For example http://www.elnec.com/search/

Regards,

Mac

Re: How to program MC68HC705JP7CDWE microcontroller?

steveong — Fri, 19 Jul 2013 01:33:13 GMT

Hi Mac

Thanks a lot. The link you sent is very helpful.

Regards

Steve