User Manual

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