AMC0XXDFLKA Datasheet, PDF (30/46 Pages) Advanced Micro Devices – 4, 8, 20, or 32 Megabyte 5.0 Volt-only Flash Memory PC Card

EMBEDDED ALGORITHMS
Begin
Erase
Initialization:
EF = 0
SEG ADRS = 0
Write ERS
Cycle #1–5
Write ERS
Cycle #6:
SEG ADRS
Wait 2 seconds
Read SEG
ADRS/FMD
Yes _{FMD = FFFFH}
No
Begin software
polling subroutine
(Figure 16)
Activity
ERS = Segment Erase Command Sequence (Table 5)
SEG ADRS = Segment Address
EF = Error Flag
EF = 0 = No failure
EF = 1 = Low byte erase error
EF = 2 = High byte erase error
EF = 3 = Word-wide erase error
FMD = Flash Memory Data
No
FMD = FFFFH
Yes
INC SEG ADRS
Erase Error
No _{Last Segment}
Address
Yes
Erase Complete
Figure 15. Word-Wide Erasure Flow Chart
19521D-16
30
AmC0XXDFLKA