HD64F3028F25 Datasheet, PDF (655/925 Pages) Renesas Technology Corp – Hardware Manual Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series

18.13 Notes on Ordering Mask ROM Version
When ordering the mask ROM version of the H8/3028 Group, note the following.
1. When ordering using an EPROM, use a 512-kbyte EPROM.
2. Fill the address area shown in figure 18.20 below with H'FF as shown to make the ROM data
size 512 kbytes. This applies both to ordering using an EPROM and to ordering using
electrical data transfer.
HD6433028
(ROM: 384-kbyte version)
Address: H'00000–H'7FFFF
H'00000
Not used*
H'5FFFF
H'40000
H'7FFFF
Note: * Write H'FF to all addresses in these areas.
Figure 18.20 ROM Addresses and Data
3. The flash memory control registers (RAMCR, FLMCR1, FLMCR2, EBR1, EBR2) are not
provided in the mask ROM version. Reading these addresses always returns a value of 1, and it
is not possible to write to them. This must be borne in mind when switching from the flash
memory version to the mask ROM version.
Rev. 2.00, 09/03, page 623 of 890