HD6473032F16 Datasheet, PDF (617/847 Pages) Renesas Technology Corp – Hardware Manual Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series

Section 18 ROM
Table 18.8 Reprogram Data Computation Table
Result of Verify-Read
after Write Pulse
(X)
(D) Application (V)
Result of Operation Comments
0
0
1
Programming completed: reprogramming
processing not to be executed
0
1
0
Programming incomplete: reprogramming
processing to be executed
1
0
1

1
1
1
Still in erased state: no action
Source data of bits on which programming is executed: (D)
Data of bits on which reprogramming is executed: (X)
Table 18.9 Additional-Programming Data Computation Table
Result of Verify-Read
after Write Pulse
(Y)
X' Application (V)
Result of Operation Comments
00
0
Programming by write pulse application
judged to be completed: additional
programming processing to be executed
01
1
Programming by write pulse application
incomplete: additional programming
processing not to be executed
10
1
Programming already completed: additional
programming processing not to be executed
11
1
Still in erased state: no action
Data of bits on which additional programming is executed: (Y)
Data of bits on which reprogramming is executed in a certain reprogramming loop: (X')
7. It is necessary to execute additional programming processing during the course of the
H8/3052BF 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.
Rev. 3.00 Mar 21, 2006 page 587 of 814
REJ09B0302-0300