I failure read EPROM from st62T65B6

[1adc]

Posted on May 11, 2004 at 13:54

I failure read EPROM from st62T65B6

[1adc]

Posted on May 11, 2004 at 10:18

Hello!

My ST62T65B6 is controled PLL FM exciter. What for winee.exe send message ''device is protect'' when try read? I not another programd ST62T65 and much read program from EPROM How read EPROM and program ? Thank!

[joern2]

Posted on May 11, 2004 at 13:54

In case the Programmer works properly and the device is neither defective nor disconnected check the protection bit.

Find the following text in the specification: 1.3.2.1 Program Memory Protection The Program Memory in OTP or EPROM devices can be protected against external readout of memory by selecting the READOUT PROTECTION option in the option byte. In the EPROM parts, READOUT PROTECTION option can be disactivated only by U.V. erasure that also results into the whole EPROM context erasure. Note: Once the Readout Protection is activated, it is no longer possible, even for SGS-THOMSON, to gain access to the OTP contents. Returned parts with a protection set can therefore not be accepted. PROTECT. This bit allows the protection of the software contents against piracy. When the bit PROTECT is set high, readout of the OTP contents is prevented by hardware. No programming equipment is able to gain access to the user program. When this bit is low, the user program can be read.