HD64F3048F16 Datasheet, PDF (654/903 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 18 ROM (H8/3048F-ONE: Single Power Supply, H8/3048B Mask ROM Version)
18.13 Notes on Ordering Mask ROM Version Chips
When ordering H8/3048B with mask ROM, note the following.
1. When ordering by means of an EPROM, use a 128-kbyte one.
2. Fill all unused addresses with H'FF and order the same ROM data size as for the 128-kbyte
version. This applies to ordering by means of an EPROM and by means of data transmission.
HD6433048B
(ROM: 128 kbytes)
Addresses: H'00000−1FFFF
H'00000
Unused area*
H'1FFFF
Note: * Write H'FF data in all addresses in this area.
Figure 18.22 Mask ROM Addresses and Data
3. The flash memory control registers (FLMCR, EBR, RAMCR, FLMSR, FLMCR1, FLMCR2,
EBR1, and EBR2)used by the versions with on-chip flash memory are not provided in the
mask ROM versions. Reading the corresponding addresses in a mask ROM version will
always return 1s, and writes to these addresses are disabled. This must be borne in mind when
switching from a flash memory version to a mask ROM version.
Rev. 3.00 Sep 27, 2006 page 626 of 872
REJ09B0325-0300