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CHAPTER 23 512K / 1024K BIT FLASH MEMORY
23.4
Method of Starting the Automatic Algorithm in Flash
Memory
There are four types of commands for starting the automatic algorithm in the flash
memory, i.e., the read/reset command, write command, and chip deletion command. In
addition, the sector deletion command can be temporarily stopped and restarted.
■
Command Sequence Table
Table 23.4-1 lists the commands to be used for writing/deleting the data to the flash memory. All the data
is written to the command register in units of bytes, though it should be accessed and written in units of
words.
In this case, the data in the upper bytes is ignored.
Note:
The addresses in the above table are the values on the CPU memory map. All the addresses and
data are represented in hexadecimal. However, "X" is an optional value.
RA: Read address
PA: Write address. Only the even address can be specified.
SA: Sector address.
For details, see "23.2 512K / 1024K Bit Flash Memory Sector Configuration"
RD: Read data
PD: Write data. Only the word data can be specified
Table 23.4-1 Command Sequence Table
Command
sequence
Bus
write
cycle
1st bus write cycle 2nd bus write cycle 3rd bus write cycle 4th bus write cycle
5th bus write cycle
6th bus write cycle
Address
Data
Address
Data
Address
Data
Ad-dress
Data
Address
Data
Address
Data
Read/reset
1
FFXXXX
XXF0
-
-
-
-
-
-
-
-
-
-
Read/reset
4
FFAAAA
XXAA
FF5554
XX55
FFAAAA
XXF0
RA
RD
-
-
-
-
Write
program
4
FFAAAA
XXAA
FF5554
XX55
FFAAAA
XXA0
PA (even)
PD
(word)
-
-
-
-
Chip
deletion
6
FFAAAA
XXAA
FF5554
XX55
FFAAAA
XX80
FFAAAA
XXAA
FF5554
XX55
FFAAAA
XX10
Sector
deletion
6
FFAAAA
XXAA
FF5554
XX55
FFAAAA
XX80
FFAAAA
XXAA
FF5554
XX55
SA (even)
XX30
Sector deletion temporary stop Temporarily stops the sector deletion command when inputting Address "FFXXXX" Data(xxB0
H
).
Sector deletion restart
Restarts the sector deletion command when inputting Address "FFXXXX" Data(xx30
H
).
* : Two types of read/reset commands can reset the flash memory to the read mode.
Summary of Contents for MB90460 Series
Page 1: ...The following document contains information on Cypress products ...
Page 3: ......
Page 5: ......
Page 9: ...iv ...
Page 41: ...22 CHAPTER 1 OVERVIEW ...
Page 45: ...26 CHAPTER 2 NOTES ON HANDLING DEVICES ...
Page 83: ...64 CHAPTER 3 CPU ...
Page 95: ...76 CHAPTER 4 RESET ...
Page 107: ...88 CHAPTER 5 CLOCK ...
Page 131: ...112 CHAPTER 6 LOW POWER CONSUMPTION MODE ...
Page 175: ...156 CHAPTER 7 INTERRUPT ...
Page 181: ...162 CHAPTER 8 MODE SETTING ...
Page 223: ...204 CHAPTER 9 I O PORT ...
Page 237: ...218 CHAPTER 10 TIME BASE TIMER ...
Page 247: ...228 CHAPTER 11 WATCHDOG TIMER ...
Page 275: ...256 CHAPTER 12 16 BIT RELOAD TIMER ...
Page 373: ...354 CHAPTER 14 MULTI FUNCTIONAL TIMER ...
Page 485: ...466 CHAPTER 16 PWC Timer ...
Page 531: ...512 CHAPTER 17 UART ...
Page 559: ...540 CHAPTER 19 DELAYED INTERRUPT GENERATOR MODULE ...
Page 589: ...570 CHAPTER 20 8 10 BIT A D CONVERTER ...
Page 601: ...582 CHAPTER 21 ROM CORRECTION FUNCTION ...
Page 633: ...614 CHAPTER 23 512K 1024K BIT FLASH MEMORY ...
Page 645: ...626 CHAPTER 24 EXAMPLE OF F2 MC 16LX MB90F462 F462A F463A CONNECTION FOR SERIAL WRITING ...
Page 715: ...696 APPENDIX ...
Page 716: ...697 INDEX INDEX The index follows on the next page This is listed in alphabetic order ...
Page 739: ......