HD64F3028F25 Datasheet, PDF (656/925 Pages) Renesas Technology Corp – Hardware Manual Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series

18.14 Notes on Switching from F-ZTAT Version to Mask ROM Version
When switching from the F-ZTAT version to the mask ROM version of the H8/3028 Group, care
must be exercised when using software designed for the F-ZTAT version.
When accessing the flash ROM internal registers of the F-ZTAT version and mask ROM version,
the read values differ as shown below.
Register
FLMCR
Bit
FWE
Value
0
1
F-ZTAT version
Application status
Overwritable
Status
Mask ROM version
— (Not readable)
Application status (always
read as 1)
Rev. 2.00, 09/03, page 624 of 890