w39l020 Winbond Electronics Corp America, w39l020 Datasheet - Page 20

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

Timing Waveforms, continued
#CE Controlled Command Write Cycle Timing Diagram
Chip Erase Timing Diagram
Address A17-0
DQ7-0
#WE
#CE
#OE
Address A17-0
DQ7-0
#WE
#CE
#OE
5555
T
SB0
WP
AA
High Z
T
WPH
2AAA
Six-byte code for 3.3V-only software
SB1
55
T
T
OES
AS
5555
SB2
80
chip erase
- 20 -
5555
SB3
AA
T
AH
T
2AAA
SB4
CP
55
Data Valid
T
DS
5555
SB5
10
T
T
OEH
Internal Erase starts
DH
T
CPH
T
EC
W39L020