
601
CHAPTER 23 512K / 1024K BIT FLASH MEMORY
23.6.1
Setting the Read/Reset Status
This section explains the procedure of issuing the read/reset command and setting the
flash memory to the read/reset status.
■
Setting the Read/Reset Status
When the flash memory is set to the read/reset status, the read/reset command can be executed by
continuously sending the read/reset command, listed in the command sequence table (see "23.4 Method of
Starting the Automatic Algorithm in Flash Memory"), to the target sector in the flash memory.
There are two types of read/reset command sequences, one is that the bus operation is executed once and
the other is that the bus operations are executed three times. However, these command sequences have no
essential difference.
The read/reset status is the initial status of the flash memory. When the power supply is turned on, or when
the command is normally terminated, the flash memory is always set to the read/reset status. The read/reset
status means the status of the flash memory that is waiting for another command to be input.
In the read/reset status, data can be read from the flash memory by executing a usual read/access command.
The data can be program-accessed from CPU same as the mask ROM. This command is not required for
usual data reading. This command should be mainly used for initializing the automatic algorithm if the
command has not been normally terminated for any reason.
Содержание MB90460 Series
Страница 1: ...The following document contains information on Cypress products ...
Страница 3: ......
Страница 5: ......
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 ...
Страница 739: ......