Posted on May 17, 2011 at 11:52Hello all, The problem is solved. The reasen was that the battery voltage (PC2) was sometime above the Vdd so thhe SRAM goes in protection mode. Best regards, André

Posted on May 17, 2011 at 11:52Hello, I use a UPSD3354DV-40u6 and have a problem with reading the internal SRAM. After testing several pcb boards the result is that I have boards that read corrupt data from the internal SRAM. After debugging I have ...

Posted on May 17, 2011 at 11:51Hello, I had the same problem. The reason was that the I used the battery backup function for the SRAM. The battery voltage was rising above Vdd and the SRAM goes to protected mode. Best Regards, André Ardesch