Flash Memory Control Status Register (Fmcs) - Fujitsu F2MC-8L F202RA Hardware Manual

17.2

Flash Memory Control Status Register (FMCS)

The flash memory control status register (FMCS), together with the flash memory
interface circuit, is used to write data to and erase data from the flash memory.
■
Flash Memory Control Status Register (FMCS)
Address
0079
H
t : Instruction cycle
INST
R/W : Readable/Writable
R : Read only
: Initial value
Figure 17.2-1 Flash Memory Control Status Register (FMCS)
bit7 bit6 bit5 bit4
INTE RDYINT WE RDY
R/W R/W R/W R
RDY
WE
RDYINT
INTE
bit3 bit2 bit1 bit0
Reading / Writing has no effect.
(for enabling data to be written into/erased from flash memory)
Data is being written or erased.
0
Data writing/erasing has been completed.
1
(Subsequent data can be written/erased.)
Write enable bit
0 Disables data to be written into/erased from flash memory.
1
Enables data to be written into/erased from flash memory.
Flash memory operation state indication bit
0 Data is being written/erased.
Data writing/erasing has been completed.
1
(An interrupt request is generated.)
Causing an interrupt to the CPU to be generated bit
0 Enables an interrupt when data writing/erasing is completed.
1
Disables an interrupt when data writing/erasing is completed.
CHAPTER 17 FLASH MEMORY
Initial value
000X----
B
Unused bit
ReaDY bit
359