
W39V040FA
- 30 -
Timing Waveforms for FWH Interface Mode, continued
Sector Erase Timing Diagram
6th Start
Load Sector Address in 7 Clocks
Sync
Internal
1 Clock
Load Din
0011b
Write the 6th command(target sector to be erased) to the device in FWH mode.
0000b
TAR
2 Clocks
1111b
Tri-State
0000b
Data
Address
#RESET
1st Start
Load Address "5555" in 7 Clocks
CLK
1 Clock
1 Clock
Start next
1 Clock
2 Clocks
1 Clock
X101b
0101b
0101b
0101b
Load Data "AA"
1010b
1010b
Write the 1st command to the device in FWH mode.
FWH4
#RESET
FWH[3:0]
CLK
FWH4
#RESET
FWH[3:0]
CLK
FWH4
#RESET
CLK
Address
Sync
TAR
Data
2nd Start
Load Address "2AAA" in 7 Clocks
1 Clock
1 Clock
Start next
1 Clock
2 Clocks
1 Clock
X010b
1010b
1010b
1010b
Load Data "55"
0101b
0101b
Write the 2nd command to the device in FWH mode.
3rd Start
Load Address "5555" in 7 Clocks
1 Clocks
1 Clocks
Start next
1 Clocks
2 Clocks
1 Clocks
X101b
0101b
0101b
0101b
Load Data "80"
1000b
0000b
Write the 3rd command to the device in FWH mode.
Address
Address
Sync
TAR
Data
Sync
TAR
Data
1111b
Tri-State
0000b
1111b
Tri-State
0000b
1111b
Tri-State
0000b
4th Start
Load Address "5555" in 7 Clocks
1 Clock
1 Clock
Start next
1 Clock
2 Clocks
1 Clock
X101b
0101b
0101b
0101b
Load Data "AA"
1010b
1010b
Write the 4th command to the device in FWH mode.
5th Start
Load Address "2AAA" in 7 Clocks
1 Clock
1 Clock
Start next
1 Clock
1 Clock
X010b
1010b
1010b
1010b
Load Data "55"
0101b
0101b
Write the 5th command to the device in FWH mode.
Address
Address
Sync
2 Clocks
TAR
Data
Sync
TAR
Data
1111b
Tri-State
0000b
1111b
Tri-State
0000b
FWH4
#RESET
FWH[3:0]
CLK
FWH4
#RESET
FWH[3:0]
CLK
XXXXb
XXXXb
XXXXb
IDSEL
Internal
0000b
1110b
IDSEL
0000b
1110b
IDSEL
0000b
1110b
IDSEL
0000b
1110b
IDSEL
0000b
1110b
IDSEL
0000b
0000b
0000b
0000b
0000b
0000b
M Size
M
Size
M Size
M Size
M Size
M Size
XXXXb
XXXXb
XXXXb
XXXXb
XXXXb
XXXXb
XXXXb
XXXXb
XXXXb
XXXXb
XXXXb
XA[18:16]b
XXXXb
XXXXb
XXXXb
XXXXb
XXXXb
XXXXb
TAR
2 Clocks
1111b
Tri-State
2 Clocks
TAR
1111b
Tri-State
2 Clocks
TAR
1111b
Tri-State
2 Clocks
TAR
1111b
Tri-State
2 Clocks
TAR
1111b
Tri-State
2 Clocks
TAR
1111b
Tri-State
1 Clock
1 Clock
0000b
1110b
FWH[3:0]
FWH4
FWH[3:0]
XXXXb