Fujitsu FR60 Hardware Manual page 553

■ Block Diagram of Flash Memory
Figure 17.1-1 shows a block diagram of flash memory.
■ Memory Map of Flash Memory
Flash memory employs different address mapping depending on whether accessed in FLASH mode or CPU
mode.
Figure 17.1-3 shows the memory map of flash memory in each mode.
Figure 17.1-2 Memory Map of MB91F353A/355A/F356B/F357B Flash Memory
0000_0000
0008_0000
0010_0000
FFFF_FFFF
Figure 17.1-1 Block Diagram of Flash Memory
Detection of rising
edge
Generation of
control signal
RDYEG RDY WF
FR-F bus (instruction/data)
CPU mode
H
I/O, etc
H
32-bit 32-bit
Internal
Internal
512K bytes
ROM 2
ROM 1
H
External
H
RDY/BUSYX
RESETX
256 KB/128KB
BYTEX
flash memory
OEX
(2 installed)
WEX
CEX
FA17 to 0 DI15 to 0 D031 to 0
Address buffer
FA17 to 0
Flash memory mode
8-bit/16-bit
0010_0000
H
Internal ROM 1
0014_0000
H
Internal ROM 2
0017_FFFF
H
Data buffer
FD31 to 0
256K bytes
256K bytes
535