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W39V040FC View Datasheet(PDF) - Winbond

Part NameDescriptionManufacturer
W39V040FC 512K X 8 CMOS FLASH MEMORY WITH FWH INTERFACE Winbond
Winbond Winbond
W39V040FC Datasheet PDF : 36 Pages
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Timing Waveforms, for FWH Interface Mode, continued
17.3 Program Cycle Timing Diagram
W39V040FC
CLK
#RESET
FWH4
FWH[3:0 ]
1st Start
IDSEL
1110b 0000b
1 Clock 1 Clock
XXXXb
XXXXb
Address
XXXXb
X101b
0101b
0101b
Load Address "5555" in 7 Clocks
0101b
M Size
Data
0000b
1010b
1010b
Load Data "AA" in 2 Clocks
TAR
Sync
1111b
Tri-State
0000b
2 Clocks
1 Clock
TAR
Start next
command
1111b
Tri-State
2 Clocks
1 Clock
Write the 1st command to the device in FWH mode.
CLK
#RESET
FWH4
2nd Start
IDSEL
FWH[3:0 ]
1110b 0000b
1 Clock 1 Clock
XXXXb
XXXXb
Address
XXXXb
X010b
1010b
1010b
Load Address "2AAA" in 7 Clocks
1010b
M Size
0000b
Write the 2nd command to the device in FWH mode.
Data
0101b
0101b
Load Data "55"
in 2 Clocks
TAR
Sync
1111b
Tri-State
0000b
2 Clocks
1 Clock
TAR
Start next
command
1111b
Tri-State
2 Clocks
1 Clock
CLK
#RESET
FWH4
3rd Start
IDSEL
FWH[3:0 ]
1110b 0000b
1 Clock 1 Clock
XXXXb
XXXXb
Address
XXXXb
X101b
0101b
0101b
Load Address "5555" in 7 Clocks
0101b
M Size
0000b
Write the 3rd command to the device in FWH mode.
Data
0000b
1010b
Load Data "A0"
in 2 Clocks
TAR
Sync
1111b
Tri-State
0000b
2 Clocks
1 Clock
TAR
Start next
command
1111b
Tri-State
2 Clocks
1 Clock
CLK
#RESET
FWH4
4th Start
IDSEL
FWH[3:0 ]
1110b 0000b
1 Clock 1 Clock
Address
XXXXb
XA[22]XXb
A[18:16]
A[15:12]
A[11:8]
Load Ain in 7 Clocks
A[7:4]
A[3:0]
M Size
Data
0000b
D[3:0]
D[7:4]
Load Din in 2 Clocks
Internal
program start
TAR
Sync
TAR
1111b
Tri-State
0000b
2 Clocks
1 Clock
1111b Tri-State
2 Clocks
Internal
program start
Write the 4th command(target location to be programmed) to the device in FWH mode.
- 29 -
Publication Release Date: Apr. 11, 2006
Revision A1
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