• Setting OTP LOCK bit
    uC: STR912 I am having trouble programmatically setting the OTP lock bit (ie not using JTAG/CAPS to set the lock, but by using firmware running on the STR912 itself). I can read and write the OTP...
  • Security bit in program memory
    Hi all, I am using Texas Msc1211y5,I am trying to use in-built ROM Routine ROM_WRITE_FLASH.. but i m unable to write to Program memory.. Should i enable MXWS bit of MWS Register ?? Or is that taken...
  • AT89C51 HSB Security Bits
    Hi, I am trying to unlock the security on a AT89c51 processor to call subroutines in external flash. When I do an LCALL from internal flash and a RET from external flash, the processor reboots...
  • Disable/remove security bits in P89C51RD2
    Hi, I am working with P89C51RD2HBA(PLCC package). When I start to download .hex files using flash magic , "Security bit 1 is set" message is displayed. And from ISP->ReadSecurity, I come...
  • AT89S52 Write lock sequence
    I'm designing an ISP programmer for AT89S52. I have completed Erase,Write & verify successfully but I'm stuck with programming the lock bits. I want to achieve write lock mode 2. I'm sending the...