Block Diagram - Renesas Hitachi H8S/2194 Series Hardware Manual

8.2.2

Block Diagram

FLMCR1 *
FLMCR2
[Legend]
STCR
FLMCR1
FLMCR2
EBR1
EBR2
Note: *
Internal address bus
Internal data bus (16 bits)
STCR
Bus interface/controller
*
*
EBR1
*
EBR2
: Serial timer control register
: Flash memory control register 1
: Flash memory control register 2
: Erase block register 1
: Erase block register 2
These registers are exclusively used for the flash memory.
If you try to read these addresses with the mask ROM
version, values read becomes uncertain. Data write is
also disabled with the above version.
Figure 8.2 Block Diagram of Flash Memory
Flash memory
(256 kbytes)
Operat-
ing
mode
Rev. 2.0, 11/00, page 173 of 1037
FWE pin
Mode pin