W39V040FA Datasheet, PDF (28/36 Pages) Winbond – 512K X 8 CMOS FLASH MEMORY WITH FWH INERFACE

W39V040FA
Timing Waveforms for FWH Interface Mode, continued
Boot Block Lockout Enable Timing Diagram
CLK
#RESET
FWH4
FWH[3:0]
1st Start IDSEL
1110b 0000b
1 Clock 1 Clock
XXXXb
XXXXb
Address
M Size
Data
TAR
Sync
TAR
Start next
command
XXXXb X101b 0101b 0101b 0101b 0000b 1010b 1010b 1111b Tri-State 0000b 1111b Tri-State
Load Address "5555" in 7 Clocks
Load Data "AA"
in 2 Clocks
Write the 1st command to the device in FWH mode.
2 Clocks 1 Clock
2 Clocks
1 Clock
CLK
#RESET
FWH4
2nd Start IDSEL
FWH[3:0]
1110b 0000b
1 Clock 1 Clock
XXXXb
XXXXb
Address
M Size
Data
XXXXb X010b 1010b 1010b 1010b 0000b 0101b 0101b
Load Address "2AAA" in 7 Clocks
Load Data "55"
in 2 Clocks
Write the 2nd command to the device in FWH mode.
TAR
Sync
TAR
Start next
command
1111b Tri-State 0000b 1111b Tri-State
2 Clocks 1 Clocks 2 Clocks
1 Clock
CLK
#RESET
FWH4
3rd Start IDSEL
FWH[3:0]
1110b 0000b
1 Clock 1 Clock
CLK
XXXXb
XXXXb
Address
M Size
Data
XXXXb X101b 0101b 0101b 0101b 0000b 0000b 1000b
Load Address "5555" in 7 Clocks
Load Data "80"
in 2 Clocks
Write the 3rd command to the device in FWH mode.
TAR
Sync
TAR
Start next
command
1111b Tri-State 0000b 1111b Tri-State
2 Clocks 1 Clock
2 Clocks
1 Clock
#RESET
FWH4
FWH[3:0]
4th Start IDSEL
1110b 0000b
1 Clock 1 Clock
XXXXb
XXXXb
Address
M Size
Data
TAR
Sync
TAR
Start next
command
XXXXb X101b 0101b 0101b 0101b 0000b 1010b 1010b 1111b Tri-State 0000b 1111b Tri-State
Load Address "5555" in 7 Clocks
Load Data "AA"
in 2 Clocks
Write the 4th command to the device in FWH mode.
2 Clocks 1 Clock
2 Clocks
1 Clock
CLK
#RESET
FWH4
FWH[3:0]
CLK
5th Start IDSEL
1110b 0000b
1 Clock 1 Clock
XXXXb
XXXXb
Address
M Size
Data
XXXXb X010b 1010b 1010b 1010b 0000b 0101b 0101b
Load Address "2AAA" in 7 Clocks
Load Data "55"
in 2 Clocks
Write the 5th command to the device in FWH mode.
TAR
Sync
TAR
Start next
command
1111b Tri-State 0000b 1111b Tri-State
2 Clocks 1 Clock
2 Clocks
1 Clock
#RESET
FWH4
FWH[3:0]
6th Start IDSEL
1110b 0000b
1 Clock 1 Clock
XXXXb
XXXXb
Address
M Size
Data
TAR
Sync
XXXXb X101b 0101b 0101b
0101b 0000b 0000b
0100b/
0111b
1111b
Tri-State
0000b
Load Address "5555" 7 Clocks
Load Data "40" or
"70" in Two Clocks
Write the 6th command to the device in FWH mode.
2 Clocks
1 Clock
TAR
Start next
command
1111b Tri-State
2 Clocks
1 Clock
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