second if using internal RC oscillator mode.
e. Protect
: Once the function of the protection is enabled, OTP memory will not be
readable any more.
f. Write continuously:
To program one after another. The function of each item
depicted in Fig. 19 is described as follows:
“
Count
” indicates the number of devices programmed.
“
Blank check
” is to check whether the OTP device is blank or not.
“
Verify
” is to compare OTP code against source file.
“
Rolling code
” is to directly update the DWTR buffer with the sequence number. The
range of sequence value is from 0 to 64K, and the program code which is updated
must belong to “MOV A,K” or “RETL K”. So the low byte of sequence number is put
on the operand of “Lo address”, and the high byte of sequence number is put on
the operand of “Hi address” address.
“
Low Byte
” is address which the low byte of current value will replace the operand
value in the program code of the address.
“
2’nd Byte
” is address which the second byte of current value will replace the
operand value in the program code of the address.
“
3’rd Byte
” is address which the third byte of current value will replace the operand
value in the program code of the address.
“
4’th Byte
” is address which the forth byte of current value will replace the operand
value in the program code of the address.
“
Current
” is a current value of sequence number.
“
Step
” is a value, and the next current value is according to step value. The next
current is equal to addition of current value and step value.
“
Success
” is the number of devices programmed successfully.
“
Error
” is the number of devices programmed fail.
“
Total
” is the total number of good devices and failed devices.
“
OK
” is to execute.
“
Exit
” is to initialize all items and close the dialog.
“
Cancel
” is to close the dialog.
18
