AMC0XXDFLKA Datasheet, PDF (26/46 Pages) Advanced Micro Devices – 4, 8, 20, or 32 Megabyte 5.0 Volt-only Flash Memory PC Card

EMBEDDED ALGORITHMS
Start
Subroutine
Read Byte
(D0–D7)
Addr = X
Yes
D7 = 1?
No
No
D5 = 1?
Yes
Read Byte
(D0–D7)
Addr = X
D7 = 1
Yes = Erase Complete
No = Erase not Complete
D5 = 1
Yes = Erase time exceeded limit, device failed
No = Erase time has not exceeded limit
X = Don’t Care
Yes
D7 = 1
No
Device failed
to program
EF = 2
Device Passed
Subroutine
Return
Figure 11. Byte-Wide Software Polling Erase Subroutine
19521D-12
26
AmC0XXDFLKA