M28W640EC-ZBF STMicroelectronics, M28W640EC-ZBF Datasheet - Page 44
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)
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M28W640ECT, M28W640ECB
APPENDIX C. FLOWCHARTS AND PSEUDO CODES
Figure 17. Program Flowchart and Pseudo Code
Note: 1. Status check of b1 (Protected Block), b3 (V
44/55
2. If an error is found, the Status Register must be cleared before further Program/Erase Controller operations.
a sequence.
Write 40h or 10h
Write Address
Read Status
Register
& Data
b7 = 1
b3 = 0
b4 = 0
b1 = 0
Start
End
YES
YES
YES
YES
NO
NO
NO
NO
Program to Protected
Block Error (1, 2)
V PP Invalid
Error (1, 2)
Error (1, 2)
Program
PP
Invalid) and b4 (Program Error) can be made after each program operation or after
program_command (addressToProgram, dataToProgram) {:
if (status_register.b3==1) /*VPP invalid error */
if (status_register.b4==1) /*program error */
if (status_register.b1==1) /*program to protect block error */
}
do {
error_handler ( ) ;
error_handler ( ) ;
error_handler ( ) ;
writeToFlash (any_address, 0x40) ;
/*or writeToFlash (any_address, 0x10) ; */
writeToFlash (addressToProgram, dataToProgram) ;
/*Memory enters read status state after
the Program Command*/
} while (status_register.b7== 0) ;
status_register=readFlash (any_address) ;
/* E or G must be toggled*/
AI03538b
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