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M28W320FST Datasheet(PDF) 45 Page - STMicroelectronics

No. de pieza M28W320FST
Descripción Electrónicos  32Mbit (2Mb x16) and 64Mbit (4Mb x16) 3V Supply, Boot Block, Secure Flash Memories
PDF  55 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M28W320FST Datasheet(HTML) 45 Page - STMicroelectronics

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M28W320FST, M28W320FSB, M28W640FST, M28W640FSB
APPENDIX C. FLOWCHARTS AND PSEUDO CODES
Figure 15. Program Flowchart and Pseudo Code
Note: 1. Status check of b1 (Protected Block), b3 (VPP Invalid) and b4 (Program Error) can be made after each program operation or after
a sequence.
2. If an error is found, the Status Register must be cleared before further Program/Erase Controller operations.
Write 40h or 10h
AI03538b
Start
Write Address
& Data
Read Status
Register
YES
NO
b7 = 1
YES
NO
b3 = 0
NO
b4 = 0
VPP Invalid
Error (1, 2)
Program
Error (1, 2)
program_command (addressToProgram, dataToProgram) {:
writeToFlash (any_address, 0x40) ;
/*or writeToFlash (any_address, 0x10) ; */
do {
status_register=readFlash (any_address) ;
/* E or G must be toggled*/
} while (status_register.b7== 0) ;
if (status_register.b3==1) /*VPP invalid error */
error_handler ( ) ;
YES
End
YES
NO
b1 = 0
Program to Protected
Block Error (1, 2)
writeToFlash (addressToProgram, dataToProgram) ;
/*Memory enters read status state after
the Program Command*/
if (status_register.b4==1) /*program error */
error_handler ( ) ;
if (status_register.b1==1) /*program to protect block error */
error_handler ( ) ;
}



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