HD64F3048VTF8 Datasheet, PDF (633/903 Pages) Renesas Technology Corp – Hardware Manual Renesas 8-Bit Single-Chip

Section 18 ROM (H8/3048F-ONE: Single Power Supply, H8/3048B Mask ROM Version)
Table 18.9 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
Legend:
Source data of bits on which programming is executed: (D)
Data of bits on which reprogramming is executed: (X)
Table 18.10 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
Legend:
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
H8/3048F-ONE 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 Sep 27, 2006 page 605 of 872
REJ09B0325-0300