7. Messages7-48 UniSite-xpi User ManualIllegal Bit ErrorProbable Cause SolutionWindowed device containsdataPerform a blank check on the device (using the More/Device checksoptions from the Main Menu) to determine whether it is truly blank. Ifblank check reports “non-blank device,” place the device under a UVlamp and allow sufficient time for it to be fully erased. After erasure,reprogram the device.Electrically erasable (EE)device contains data, anddevice’s electronic erasefeature is not enabledMaker sure that the device’s electronic erase feature (Erase EE Deviceparameter under the Program Device screen) is enabled (set to “Y”).Reprogram the device after the electronic erase feature has beenenabled.Note: To display all parameters on the Program Device screen, press the F4function key.One Time Programmable(OTP) device contains dataPerform a blank check on the device to determine whether the devicecontains data. If so, your OTP device had previously been programmedand most likely cannot be over-programmed with different data or fusepattern. Program another device.Faulty device(s) Program at least one more device labeled with the same date code. If itprograms successfully, your original device was probably faulty. Ifother devices with the same date code also fail, attempt to programdevices labeled with different date codes. If these devices programsuccessfully, the devices from the original date code are probably faulty.Note: You may wish to contact the device manufacturer and report yourfindings.Improper algorithm applied byprogrammer due to recentchange in manufacturerspecificationsIf this error occurs only on devices with recent date codes, the devicesmay require a modified programming algorithm.Note: You may wish to contact the device manufacturer to determine whetherthe programming specifications for the device have changed.Improper algorithm applied byprogrammer due to possiblebug in programmer softwareThis error, if it occurs on devices with old to recent date codes, mayindicate an algorithm-related problem in your programmer software.Workaround: On your programmer’s Device List, find the earliestversion of programmer software that supports the device, boot yourprogrammer with this version, and attempt the operation again. If theoperation is successful, you’ve found a temporary workaround.Note: Contact Data I/O Customer Support and report your findings.
