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M58PR256J датащи(PDF) 103 Page - STMicroelectronics

номер детали M58PR256J
подробное описание детали  256 Mbit or 512 Mbit (x16, Multiple Bank, Multilevel, Burst) 1.8 V supply Flash memories
PDF  114 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M58PR256J датащи(HTML) 103 Page - STMicroelectronics

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 103 / 114 page
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M58PR256J, M58PR512J
Flowcharts and pseudo codes
103/114
Figure 26.
Blank Check flowchart and pseudo code
1.
Any address within the bank can equally be used.
2.
If an error is found, the Status Register must be cleared before further Program/Erase operations.
Write Block
Address & BCh
Start
SR7 = 1
Write Block
Address & D0h
Read
Status Register (1)
SR1 = 0
SR3 = 0
SR4 = 1
SR5 = 1
SR5 = 0
NO
YES
VPP Invalid
Error (2)
NO
Command Sequence
Error (2)
YES
Erase Error (2)
NO
Protected Block
Error (2)
NO
End
blank_check_command (blockToCheck) {
writeToFlash (blockToCheck, 0xBC);
writeToFlash (blockToCheck, 0xD0);
/* Memory enters read status state after
the Blank Check Command */
do {
status_register = readFlash (blockToCheck);
/* see note (1) */
/* E or G must be toggled */
} while (status_register.SR7==0);
if (status_register.SR3==1)
/* VPP invalid error */
error_handler () ;
if (status_register.SR4==1) && (status_register.SR5==1)
/* command sequence error */
error_handler () ;
if (status_register.SR5==1)
/* erase error */
error_handler () ;
if (status_register.SR1==1)
/* protected block error */
error_handler () ;
}
ai10520



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