h8s-2635 Renesas Electronics Corporation., h8s-2635 Datasheet - Page 922

• Manufacturer Part Number: h8s-2635
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Section 21B ROM (H8S/2638 Group, H8S/2639 Group, H8S/2630 Group)
21B.16 Note on Switching from F-ZTAT Version to Mask ROM Version
The mask ROM version does not have the internal registers for flash memory control that are
provided in the F-ZTAT version. Table 21B-24 lists the registers that are present in the F-ZTAT
version but not in the mask ROM version. If a register listed in table 21B-24 is read in the mask
ROM version, an undefined value will be returned. Therefore, if application software developed
on the F-ZTAT version is switched to a mask ROM version product, it must be modified to ensure
that the registers in table 21B-27 have no effect.
Table 21B-27
Register
Flash memory control register 1
Flash memory control register 2
Erase block register 1
Erase block register 2
RAM emulation register
Rev. 6.00 Feb 22, 2005 page 862 of 1484
REJ09B0103-0600
Registers Present in F-ZTAT Version but Absent in Mask ROM Version
Abbreviation
FLMCR1
FLMCR2
EBR1
EBR2
RAMER
Address
H'FFA8
H'FFA9
H'FFAA
H'FFAB
H'FEDB