W39V040A Datasheet, PDF (20/34 Pages) Winbond – 512K × 8 CMOS FLASH MEMORY WITH LPC INTERFACE

Timing Waveforms for Programmer Interface Mode, continued
Toggle Bit Timing Diagram
A[10:0]
R/#C
#WE
#OE
DQ6
T_OET
TBP or TEC
W39V040A
Boot Block Lockout Enable Timing Diagram
A[10:0]
(Internal A[18:0])
DQ[7:0]
SIX-byte code for Boot Block Lockout command
5555
AA
2AAA
55
5555
80
5555
AA
2AAA
55
5555
40/70
R/#C
#OE
#WE
TWP
TWPH
TWC
SB0
SB1
SB2
SB3
SB4
SB5
Note: The internal address A[18:0] are converted from external Column/Row address.
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[7:0] are mapped to the internal A[18:11].
When 40(hex) is loaded, the 64KByte are locked; while 70(hex) is loaded, the 16KByte is locked.
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