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M58LR128HT 데이터시트(PDF) 94 Page - STMicroelectronics

부품명 M58LR128HT
상세설명  128 Mbit (8 Mb ×16, Multiple Bank, Multilevel interface, Burst) 1.8 V supply Flash memories
PDF  112 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M58LR128HT 데이터시트(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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