How to find the security bit enable or not on max7000s. If it is set, how to disable the security bit.

[rajendraBala]

Hi


I am a beginner with the Max7000s device. When I connected to the chip to Quartus II web edit v13 over the JTAG. It is showing the "Blank check" only. How to find the device is in security mode or not. If it is security mode, how do I reset or disable it?

Thanks in advance.

 

[KlausST]

Hi,

I expect the informations to be written in the datasheet .. or any additional documents provided by the manufacturer.

Did you read the datasheet?
Did you look for other documents maybe about "security" or "programming" .. or similar topics?

Klaus

 

[betwixt]

From the data sheet:

All MAX 7000 devices contain a programmable security bit that controls
access to the data programmed into the device. When this bit is
programmed, a proprietary design implemented in the device cannot be
copied or retrieved. This feature provides a high level of design security
because programmed data within EEPROM cells is invisible. The security
bit that controls this function, as well as all other programmed data, is
reset only when the device is reprogrammed

Brian.