Hello, is there a way to make a specific area read only on an DS1245Y-70 NVRAM Chip? So the specific area cant be written anymore, only readed?

 

The data sheet says nothing about any read-only feature, so I conclude that you cannot do that. Always read the data sheet.

 

Welcome to AAC!

Not without adding external logic to do it.

 

Welcome to AAC!

Not without adding external logic to do it.

This is exactly what im looking for. The question is how. I have totally no Idea

 

This is exactly what im looking for. The question is how. I have totally no Idea

Decode the range of addresses you want write protected and force the WE# signal HIGH.