Prefacelift ECU Rom board

[villanueva_00]

Hello guys!
I´ve been working on some rom boards for the prefacelift micra k11´s with the 20x2 header.
Made some prototypes already with 27sf512 eeproms but can´t seem to make it work yet. I have gathered some information about the cpu (M37791E4TJ) and header pinout in case someone is interested.
I would appreciate if someone has any daughterboard on their micras could send some pictures or shed some light on the matter.
I know back in the day micra_pete on this forum or calum johnson knew how to make a daugherboard but any information is long gone or can´t seem to find it.
Thanks in advance to everybody!

 

[.Maarten]

Have you seen this? https://www.micra.org.uk/threads/99-micra-ecu-reprogramming.31599/

 

[villanueva_00]

Thanks for the quick response .Maarten!
Yeah already checked that thread. The pinout on that B13 daughterboard for the 40 pin header is not the same as in the micra ecu´s.
Anyhow thanks for the reply.

 

[.Maarten]

Are you using the smaller non nats k11 ecu?

 

[villanueva_00]

Yeah i´m using the half ecu non nats version