3980xpi Users Manual - Data I/O Corporation

Illegal Bit Error
Messages
When this error occurs, the electronic ID of the device is displayed. You can also
determine the electronic ID of your part by selecting the Compare Elec ID Device
checks option (using the More/Device checks option from the Main Menu).
The Compare elec ID parameter is located in the Load Device, Program Device,
Verify Device, and Programming Parameters screens. To display the full parameter
list under the Load Device, Program Device, and Verify Device screens, press the
F4 function key.
Probable Cause Solution
Windowed device
contains data
Electrically erasable (EE)
device contains data, and
device's electronic erase
feature is not enabled
One Time Programmable
(OTP) device contains
data
Perform a blank check on the device (using the More/Device checks
options from the Main Menu) to determine whether is it truly blank. If
blank check reports Non-blank device, place the device under a UV
lamp and allow sufficient time for it to be fully erased. After erasure,
reprogram the device.
Make sure that the device's electronic erase feature (Erase EE Device
parameter under the Program Device screen) is enabled (set to Y).
Reprogram the device after the electronic erase feature has been
enabled.
Note: To display all parameters on the Program Device
screen, press the F4 function key.
Perform a blank check on the device to determine whether the device
contains data. If so, your OTP device had previously been programmed
and most likely cannot be over-programmed with different data or fuse
pattern. Program another device.
Faulty device(s) Program at least one more device labeled with the same date code. If it
programs successfully, your original device was probably faulty. If
other devices with the same date code also fail, attempt to program
devices labeled with different date codes. If these devices program
successfully, the devices from the original date code are probably
faulty.
Note: You may wish to contact the device manufacturer and
report your findings.
Improper algorithm
applied by programmer
due to recent change in
manufacturer
specifications
Improper algorithm
applied by programmer
due to possible bug in
programmer software
If this error occurs only on devices with recent date codes, the devices
may require a modified programming algorithm.
Note: You may wish to contact the device manufacturer to
determine whether the programming specifications for the
device have changed.
This error, if it occurs on devices with old to recent date codes, may
indicate an algorithm-related problem in your programmer software.
3980xpi/3980/3900/2900 User Manual 6-17