M28W640EC-ZBF STMicroelectronics, M28W640EC-ZBF Datasheet - Page 49
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M28W640EC-ZBF
Manufacturer Part Number
M28W640EC-ZBF
Description
64 Mbit 4Mb x16/ Boot Block 3V Supply Flash Memory
Manufacturer
STMicroelectronics
Datasheet
1.M28W640EC-ZBF.pdf
(55 pages)
- Current page: 49 of 55
- Download datasheet (839Kb)
Figure 22. Erase Suspend & Resume Flowchart and Pseudo Code
Block Protect/Unprotect/Lock
Program/Protection Program
Erase Continues
Read data from
another block
Read Status
Write D0h
Write B0h
Write FFh
Write 70h
Register
b7 = 1
b6 = 1
Start
or
or
YES
YES
NO
NO
Erase Complete
Read Data
Write FFh
erase_suspend_command ( ) {
if (status_register.b6==0) /*erase completed */
else
}
do {
writeToFlash (any_address, 0xB0) ;
writeToFlash (any_address, 0x70) ;
/* read status register to check if
erase has already completed */
} while (status_register.b7== 0) ;
{ writeToFlash (any_address, 0xFF) ;
{ writeToFlash (any_address, 0xFF) ;
}
}
status_register=readFlash (any_address) ;
/* E or G must be toggled*/
read_data ( ) ;
/*read data from another block*/
/*The device returns to Read Array
(as if program/erase suspend was not issued).*/
read_program_data ( );
/*read or program data from another address*/
writeToFlash (any_address, 0xD0) ;
/*write 0xD0 to resume erase*/
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