R1220502N datasheet or compatibility

Douglas Hummel

Hi friends. I have some chips manufactured by Texas Instruments Philippines with ID "R1220502N", but I need more informations about it. I bought these pieces as being compatible with the "TMS9128NL" but are not compatible. I did not find any information about this chip. Could you help me find its data sheet or description and pin outs? I am sending a picture of the chip. Thank you.

over 9 years ago

0 ShreyasRao over 9 years ago

TI__Guru 62170 points

Hi Douglas ,

I have contacted my team to find out more on the part . I am not sure if this belongs to logic or any other product lines .

0 ShreyasRao over 9 years ago in reply to ShreyasRao

TI__Guru 62170 points

The initial response is there is no reference to this product in our website nor I can find more information on TMS part which I believe is Toshiba.

0 Douglas Hummel over 9 years ago in reply to ShreyasRao

Prodigy 20 points

Thank you for the fast reply, Shreyas. Perhaps the "R1220502N" is a custom chip produced for a specific device that I do not know. The TMS9128NL chip was used as a Video Display Processor (VDP) by older MSX computers. I'll keep searching for more information. I thought that these chips were manufactured exclusively by Texas Instruments.Thanks again for the effort.

0 ShreyasRao over 9 years ago in reply to Douglas Hummel

TI__Guru 62170 points

Hi Douglas ,

The chips sure says TI in it , but it seems really old . The video display processors are not supported by logic product group though . you may have some luck in finding the answer in Embedded processors forum maybe.
I hope they haven't sold this division off but I am unsure.

Logic

Logic forum

R1220502N datasheet or compatibility