w49v002a Winbond Electronics Corp America, w49v002a Datasheet - Page 19

• Manufacturer Part Number: w49v002a
• Description: 256k X 8 Cmos Flash Memory With Lpc Interface
• Manufacturer: Winbond Electronics Corp America

Timing Waveforms for Programmer Interface Mode, continued
Toggle Bit Timing Diagram
Boot Block Lockout Enable Timing Diagram
A[10:0]
#WE
#OE
DQ6
R/
#C
(Internal A[17:0])
DQ[7:0]
A[10:0]
R/
#WE
#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],
Row Address A[6:0] are mapped to the internal A[17:11].
5555
T
SB0
WP
AA
T
OET
T
Six-byte code for 3.3V-only software chip erase
WPH
2AAA
SB1
55
5555
SB2
T
80
BP or
T
- 19 -
5555
EC
SB3
AA
2AAA
SB4
55
Preliminary W49V002A
5555
SB5
40
Publication Release Date: April 2001
T
WC
Revision A1