w39l020 Winbond Electronics Corp America, w39l020 Datasheet - Page 21

• Manufacturer Part Number: w39l020
• Description: 256k U 8 Cmos Flash Memory
• Manufacturer: Winbond Electronics Corp America

Timing Waveforms, continued
Sector/Page Erase Timing Diagram
#DATA Polling Timing Diagram
Address A17-0
Address A17-0
DQ7-0
#WE
#CE
#OE
SA = Sector Address, PA = Page Address
Please refer to page 9 for detail informatio
#WE
#CE
#OE
DQ7
5555
SB0
T
An
WP
AA
T
WPH
X
2AAA
T
T
SB1
OEP
Six-byte commands for 3.3V-only
OEH
55
Sector/Page Erase
T
CEP
5555
SB2
An
80
X
- 21 -
T
BP or
5555
SB3
T
AA
EC
Publication Release Date: November 11, 2002
2AAA
SB4
An
55
X
SA/PA
SB5
30/50
Internal Erase starts
An
T
X
EP
T
OES
W39L020
Revision A4