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M58LR128KB855 Datasheet(PDF) 92 Page - Numonyx B.V

No. de pieza M58LR128KB855
Descripción Electrónicos  128 or 256 Mbit (횞16, multiple bank, multilevel interface, burst) 1.8 V supply Flash memories
PDF  110 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricante Electrónico  NUMONYX [Numonyx B.V]
Página de inicio  http://www.numonyx.com
Logo NUMONYX - Numonyx B.V

M58LR128KB855 Datasheet(HTML) 92 Page - Numonyx B.V

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Flowcharts and pseudocodes
M58LR128KT, M58LR128KB, M58LR256KT, M58LR256KB
92/111
Figure 19. 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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