W29C040 Datasheet, PDF (17/20 Pages) Winbond – 512K X 8 CMOS FLASH MEMORY

W29C040
Timing Waveforms, continued
Reset Software Data Protection Timing Diagram
Six-byte sequence for resetting
software data protection mode
TWC
Address A18-0
5555
2AAA
5555
5555
2AAA
5555
DQ7-0
CE
AA
55
80
AA
55
20
OE
TWP
TBLC
WE
TWPH
SW0
SW1
SW2
SW3
SW4
SW5
Internal programming starts
5 Volt-only Software Chip Erase Timing Diagram
Six-byte code for 5V-only software
chip erase
TWC
Address A18-0
5555
2AAA
5555
5555
2AAA 5555
DQ7-0
CE
AA
55
80
AA
55
10
OE
TWP
TBLC
WE
TWPH
SW0
SW1
SW2
SW3
SW4
SW5
Internal erasing starts
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Publication Release Date: May 1999
Revision A5