W39L020 Datasheet, PDF (12/26 Pages) Winbond – 256K × 8 CMOS FLASH MEMORY

W39L020
Embedded #Data Polling Algorithm
Start
VA = Byte address for programming
Read Byte
(DQ0 - DQ7)
Address = VA
= Any of the sector addresses within
the sector being erased during sector
erase operation
= Any of the page addresses within
the page being erased during page
erase operation
No
DQ7 = Data
= Any of the device addresses being
erased during chip erase operation
?
Yes
Pass
Embedded Toggle Bit Algorithm
Start
Read Byte
(DQ0 - DQ7)
Address = Don't Care
Yes
DQ6 = Toggle
?
No
Pass
- 12 -