W49F002U Datasheet, PDF (19/23 Pages) Winbond – 256K X 8 CMOS FLASH MEMORY

W49F002U
Timing Waveforms, continued
Chip Erase Timing Diagram
Address A17-0
DQ7-0
CE
OE
WE
5555
Six-byte code for 5V-only software
chip erase
2AAA 5555 5555
2AAA 5555
AA
55
80
AA
55
10
TWP
TEC
TWPH
SB0
SB1
SB2
SB3
SB4
SB5 ^{Internal Erase starts}
Sector Erase Timing Diagram
Address A17-0
DQ7-0
CE
5555
Six-byte code for 5V-only software
Main Memory Erase
2AAA 5555 5555
2AAA SA
AA
55
80
AA
55
30
OE
TWP
TEC
WE
TWPH
SB0
SB1
SB2
SB3
SB4
SB5 ^{Internal Erase starts}
SA = Sector Address
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Publication Release Date: April 2000
Revision A2