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M58PR256LE Folha de dados(PDF) 109 Page - STMicroelectronics

Nome de Peças M58PR256LE
Descrição Electrónicos  256-Mbit, 512-Mbit or 1-Gbit (횞 16, multiple bank, multilevel, burst) 1.8 V supply Flash memories
PDF  119 Pages
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M58PR256LE Folha de dados(HTML) 109 Page - STMicroelectronics

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M58PR256LE, M58PR512LE, M58PR001LE
Flowcharts and pseudocodes
109/119
Figure 27.
Protection Register program flowchart and pseudocode
1.
Status check of SR1 (protected block), SR3 (VPP invalid) and SR4 (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 C0h (1)
AI06177c
Start
Write Address
& Data
Read Status
Register (1)
YES
NO
SR7 = 1
YES
NO
SR3 = 0
NO
SR4 = 0
VPP Invalid
Error (2, 3)
Program
Error (2, 3)
protection_register_program_command (addressToProgram, dataToProgram) {:
writeToFlash (addressToProgram, 0xC0) ;
/*see note (1) */
do {
status_register=readFlash (addressToProgram) ;
/* see note (1) */
/* E or G must be toggled*/
} while (status_register.SR7== 0) ;
if (status_register.SR3==1) /*VPP invalid error */
error_handler ( ) ;
YES
End
YES
NO
SR1 = 0
Program to Protected
Block Error (2, 3)
writeToFlash (addressToProgram, dataToProgram) ;
/*Memory enters read status state after
the Program Command*/
if (status_register.SR4==1) /*program error */
error_handler ( ) ;
if (status_register.SR1==1) /*program to protect block error */
error_handler ( ) ;
}



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