Hitachi H8/3022 Hardware Manual page 474

Table 15-10 Additional-Programming Data Computation Table
Result of Verify-Read
after Write Pulse
(X') Application (V)
0 0
0 1
1 0
1 1
Legend:
X': Data of bits on which reprogramming is executed in a certain reprogramming loop
Y: Data of bits on which additional programming is executed
7. It is necessary to execute additional programming processing during the course of the
H8/3022F program/program-verify procedure. However, once 128-byte-unit programming is
finished, additional programming should not be carried out on the same address area. When
executing reprogramming, an erase must be executed first. Note that normal operation of reads,
etc., is not guaranteed if additional programming is performed on addresses for which a
program/program-verify operation has finished.
(Y)
Result of
Operation Comments
1 Programming by write pulse application judged to
be completed: additional programming processing
to be executed
0 Programming by write pulse application
incomplete: additional programming processing not
to be executed
1 Programming already completed: additional
programming processing not to be executed
1 Still in erased state: no action
463