Author Topic: TL866-II Plus programmer - change device pinout?  (Read 1308 times)

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Online CirclotronTopic starter

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TL866-II Plus programmer - change device pinout?
« on: April 27, 2020, 01:17:46 pm »
Here's the situation - we have old design board that uses a 1Mx8 EPROM and we want to replace it with a more modern 5V flash device. On-board programming is not an option at this stage. Would enormously complicate things and set us back a long time. The current path of attack is to draw up a small board with the flash mem on it and plug it straight into the EPROM socket. So far so good. If we want to use the programmer on this small board though, the flash device pinout that the programmer socket would present doesn't match the original EPROM pinout that the small board would have so we can't just plug the small board straight into the programmer. Is there some way, or is there someone here skilled enough to devise a way to make this happen?
« Last Edit: April 27, 2020, 01:46:55 pm by Circlotron »
 

Offline coromonadalix

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Re: TL866-II Plus programmer - change device pinout?
« Reply #1 on: April 27, 2020, 01:22:26 pm »
Maybe an home made socket adapter to convert your design, a 48 pins to another 48 pins  with your right pinouts ?
 

Offline bson

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Re: TL866-II Plus programmer - change device pinout?
« Reply #2 on: April 27, 2020, 06:55:40 pm »
Make an adapter board with a ZIF socket, that will hold your SMT NOR/FRAM/EEPROM carrier board during programming?
 

Offline luiHS

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Re: TL866-II Plus programmer - change device pinout?
« Reply #3 on: April 27, 2020, 08:11:54 pm »
 
You didn't say what package your Flash memory is. I have a similar case replacing a PLCC32 Eprom by a Flash TSOP32. I program both memory chips with a TL866 programmer, for the Flash memory I have order this TSOP32 to DIP adapter to program it before solder it in my board.

Or you can make another adapter PCB (DIP to DIP) just to program the flash if it is already soldered on your adapter board (I suppose TSOP to DIP).
« Last Edit: April 27, 2020, 08:29:28 pm by luiHS »
 

Online CirclotronTopic starter

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Re: TL866-II Plus programmer - change device pinout?
« Reply #4 on: May 12, 2020, 03:20:24 am »
The package is TSOP48.
That adapter, is the pinout 1:1 from DIP to TSOP?
The TSOP48 has a few extra connections and the original eprom uses all 32 DIP pins so it looks like I'll need a small plug in cable from the flash board to the adapter board that goes into the programmer.
 


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