W49F020-70 Winbond, W49F020-70 Datasheet - Page 17

• Manufacturer Part Number: W49F020-70
• Description: 256K X 8 CMOS FLASH MEMORY
• Manufacturer: Winbond

Timing Waveforms, continued
Chip Erase Timing Diagram
Address A17-0
DQ7-0
WE
CE
OE
5555
SB0
XXAA
T
WP
T
WPH
2AAA
SB1
XX55
Six-byte code for 5V-only software
5555
SB2
XX80
chip erase
- 17 -
5555
SB3
XXAA
2AAA
SB4
XX55
Preliminary W49F020
Publication Release Date: October 1999
5555
SB5
XX10
Internal Erase starts
T
EC
Revision A1