I just rec'd the new Microchip line card. Inside they have a new
category of parts classified as "R" such as 12CR509. The only
difference they show is that the "R" version is classified as  ROM
where the others are listed as OTP/Flash. Many of course are not
flash. OTP is ROM, so what are they getting at here? Or is this just
another way to classify window parts?

Thanks
Jack Shidemantle
Automation & Development Engineer
YSI, Inc. USA