HD64F3028F25 Datasheet, PDF (607/925 Pages) Renesas Technology Corp – Hardware Manual Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series

18.2.1 Block Diagram
Internal address bus
Internal data bus (16 bits)
FLMCR1 ^*2
FLMCR2
*2
*2
EBR1
EBR2 ^*2
RAMCR ^*2
Bus interface/controller
Operating
mode
FWE pin^*1
Mode pins
Flash memory
(384 kbytes)
Legend
FLMCR1: Flash memory control register 1
FLMCR2: Flash memory control register 2
EBR1: Erase block register 1
EBR2: Erase block register 2
RAMCR: RAM control register
Notes: 1.
2.
Functions as FWE in flash memory version and as RESO in mask ROM version.
The flash memory control registers (FLMCR1, FLMCR2, EBR1, EBR2, RAMCR)
are used only by the flash memory version and do not exist in the mask ROM
version. In the mask ROM version reading these addresses always returns a
value of 1, and it is not possible to write to them.
Figure 18.1 Block Diagram of Flash Memory
Rev. 2.00, 09/03, page 575 of 890