W49V002 Winbond, W49V002 Datasheet - Page 20

• Manufacturer Part Number: W49V002
• Description: 256K X 8 CMOS FLASH MEMORY WITH FWH INTERFACE
• Manufacturer: Winbond

Timing Waveforms for Programmer Interface Mode, continued
Chip Erase Timing Diagram
Sector Erase Timing Diagram
(Internal A[17:0])
DQ[7:0]
A[10:0]
#WE
R/
#OE
Note: The internal address A[17:0] are converted from external Column/Row address.
#C
Column/Row Address are mapped to the Low/High order internal address.
i.e. Column Address A[10:0] are mapped to the internal A[10:0],
DQ[7:0]
SA = Sector Address, Please ref. to the "Table of Command Definition"
A[10:0]
(Internal A[17:0])
#OE
#WE
Row Address A[6:0] are mapped to the internal A[17:11].
R/
#C
5555
Note: The internal address A[17:0] are converted from external Column/Row address.
SB0
T
WP
AA
Column/Row Address are mapped to the Low/High order internal address.
i.e. Column Address A[10:0] are mapped to the internal A[10:0],
5555
T
WPH
AA
T
SB0
Row Address A[6:0] are mapped to the internal A[17:11].
WP
Six-byte code for 3.3V-only software chip erase
2AAA
T
SB1
WPH
Six-byte code for 5V-only software
2AAA
55
Main Memory Erase
55
SB1
5555
5555
SB2
80
80
SB2
- 20 -
5555
5555
SB3
SB3
AA
AA
2AAA
2AAA
SB4
55
SB4
Preliminary W49V002A
55
5555
10
SB5
SA
SB5
30
Internal Erasure Starts
Internal Erase starts
T
EC
T
EC