Hi!
So I have a little device (on the older side) that has an IC labeled "(NEC) D658N55" (and "0835MP206"/"O835MP206" on the second line) on its motherboard.
It controls an old M27C1001 EPROM (with UV window) and is controller by the main microprocessor.
When searching online, I found no datasheets (except for some diodes that shared part of the name).
Another name I found is "UPD658N55", but that might be an entirely different IC.
Thank you for your time.
So I have a little device (on the older side) that has an IC labeled "(NEC) D658N55" (and "0835MP206"/"O835MP206" on the second line) on its motherboard.
It controls an old M27C1001 EPROM (with UV window) and is controller by the main microprocessor.
When searching online, I found no datasheets (except for some diodes that shared part of the name).
Another name I found is "UPD658N55", but that might be an entirely different IC.
Thank you for your time.