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CHAPTER 23 512K / 1024K BIT FLASH MEMORY
23.3
Flash Memory Control Status Register (FMCS)
The FMCS, which exists in the flash memory interface circuit, is used when data is
written to or erased from flash memory.
■
Control Status Register (FMCS)
●
Contents of the bits
[bit7] INTE (Interrupt Enable)
This bit generates an interrupt to the CPU when the write/delete operation to the flash memory is
terminated.
When the INTE bit is "1" and the RDYINT bit is "1" an interrupt generated and sent to the CPU. If the
INTE bit is "0", no interrupt is generated:
0: Interrupt disabled when the write/delete operation is terminated.
1: Interrupt enabled when the write/delete operation is terminated.
[bit6] RDYINT (Ready Interrupt)
This bit indicates the flash memory operating status.
After the write/delete to the flash memory is terminated, this bit is set to "1". While this bit is "0" after
the end of write/delete operation to the flash memory, the flash memory cannot be written or deleted.
After the write/delete operation is terminated and this bit is set to "1", the flash memory can be written
or deleted. This bit is cleared to "0" by writing "0" and the writing of "1" is ignored. At the termination
time of the automatic algorithm in the flash memory (see "23.4 Method of Starting the Automatic
Algorithm in Flash Memory"), this bit is set to "1". While using the read modify write (RMW)
instruction, "1" can be read at any time.
0: During the write/delete operation
1: Write/delete operation terminated (An interrupt request is generated)
[bit5] WE (Write Enable)
This bit is the write enable bit for the flash memory area.
When this bit is "1", the write instruction after issuing command sequence to FF bank (see "23.4
Method of Starting the Automatic Algorithm in Flash Memory") is equivalent to writing to the flash
memory area. When this bit is "0", no write/delete signal is generated. This bit is used when the flash
memory write/delete command is started.
0: Flash memory write/delete disabled
1: Flash memory write/delete enabled
INTE
RDYINT
WE
RDY
Re
s
erved
LPM1
LPM0
Re
s
erved
0
1
2
3
4
5
6
7
b
it
(R/W)
(0)
(R/W)
(0)
(R/W)
(0)
(R/W)
(0)
(R)
(1)
(W)
(0)
(W)
(0)
(W)
(0)
Addre
ss
:0000AE
H
Re
a
d/Write
Initi
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Содержание MB90460 Series
Страница 1: ...The following document contains information on Cypress products ...
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Страница 9: ...iv ...
Страница 41: ...22 CHAPTER 1 OVERVIEW ...
Страница 45: ...26 CHAPTER 2 NOTES ON HANDLING DEVICES ...
Страница 83: ...64 CHAPTER 3 CPU ...
Страница 95: ...76 CHAPTER 4 RESET ...
Страница 107: ...88 CHAPTER 5 CLOCK ...
Страница 131: ...112 CHAPTER 6 LOW POWER CONSUMPTION MODE ...
Страница 175: ...156 CHAPTER 7 INTERRUPT ...
Страница 181: ...162 CHAPTER 8 MODE SETTING ...
Страница 223: ...204 CHAPTER 9 I O PORT ...
Страница 237: ...218 CHAPTER 10 TIME BASE TIMER ...
Страница 247: ...228 CHAPTER 11 WATCHDOG TIMER ...
Страница 275: ...256 CHAPTER 12 16 BIT RELOAD TIMER ...
Страница 373: ...354 CHAPTER 14 MULTI FUNCTIONAL TIMER ...
Страница 485: ...466 CHAPTER 16 PWC Timer ...
Страница 531: ...512 CHAPTER 17 UART ...
Страница 559: ...540 CHAPTER 19 DELAYED INTERRUPT GENERATOR MODULE ...
Страница 589: ...570 CHAPTER 20 8 10 BIT A D CONVERTER ...
Страница 601: ...582 CHAPTER 21 ROM CORRECTION FUNCTION ...
Страница 633: ...614 CHAPTER 23 512K 1024K BIT FLASH MEMORY ...
Страница 645: ...626 CHAPTER 24 EXAMPLE OF F2 MC 16LX MB90F462 F462A F463A CONNECTION FOR SERIAL WRITING ...
Страница 715: ...696 APPENDIX ...
Страница 716: ...697 INDEX INDEX The index follows on the next page This is listed in alphabetic order ...
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