HD64F2638F20J Datasheet, PDF (933/1512 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2600 Series

H8S/2639, H8S/2638, H8S/2636,
H8S/2630, H8S/2635 Group
Section 21C ROM
(H8S/2635 Group)
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:
(D): Source data of bits on which programming is executed
(X): Source data of bits on which reprogramming is executed
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:
(Y): Data of bits on which additional programming is executed
(X'): Data of bits on which reprogramming is executed in a certain reprogramming loop
7. It is necessary to execute additional programming processing during the course of the chip
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.
REJ09B0103-0800 Rev. 8.00
May 28, 2010
Page 883 of 1458