W39V040B Datasheet, PDF (14/32 Pages) Winbond – 512K × 8 CMOS FLASH MEMORY WITH LPC INTERFACE

W39V040B
9.4 Embedded Toggle Bit Algorithm
Start
Read Byte
(DQ0-DQ7)
Read Byte
(DQ0-DQ7)
No
Toggle Bit
=Toggle ?
Yes
No
DQ5 = 1 ?
Yes
Read Byte
(DQ0-DQ7) twin
No
Toggle Bit
=Toggle ?
Program/Erase
Operation Not
Complete, Write
Reset Command
Program/Erase
Operation complete
Note: Recheck toggle bit because it may stop toggling as DQ5 changes to “1”.
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Publication Release Date: April 14, 2005
Revision A3