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M58LR128HT データシート(PDF) 94 Page - STMicroelectronics

部品番号 M58LR128HT
部品情報  128 Mbit (8 Mb ×16, Multiple Bank, Multilevel interface, Burst) 1.8 V supply Flash memories
PDF  112 Pages
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M58LR128HT データシート(HTML) 94 Page - STMicroelectronics

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Flowcharts and pseudocodes
M58LR128HT, M58LR128HB
94/112
Figure 20. Blank Check flowchart and pseudocode
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 & CBh
Read
Status Register (1)
SR4 = 1
SR5 = 1
SR5 = 0
NO
YES
Command Sequence
Error (2)
YES
Blank Check Error (2)
NO
End
blank_check_command (blockToCheck) {
writeToFlash (blockToCheck, 0xBC);
writeToFlash (blockToCheck, 0xCB);
/* 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.SR4==1) && (status_register.SR5==1)
/* command sequence error */
error_handler () ;
if (status_register.SR5==1)
/* Blank Check error */
error_handler () ;
}
ai10520c



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