W49V002 Winbond, W49V002 Datasheet - Page 26

• Manufacturer Part Number: W49V002
• Description: 256K X 8 CMOS FLASH MEMORY WITH FWH INTERFACE
• Manufacturer: Winbond

Timing Waveforms for LPC Interface Mode, continued
Boot Block Lockout Enable Timing Diagram
#LFRAM
#RESET
LAD[3:0]
CLK
LAD[3:0]
LAD[3:0]
#RESET
#LFRAM
#RESET
#LFRAM
#LFRAM
LAD[3:0]
LAD[3:0]
#RESET
LAD[3:0]
#RESET
#LFRAM
All the address loaded should be within the top 4MByte,FFFFFFFF to FFC00000, or within the bottom 1MByte, 000FFFFF to 000E0000.
CLK
#RESET
#LFRAM
CLK
CLK
CLK
CLK
1 Clock
1 Clock
1 Clock
3rd Start
1 Clock
5th Start
1 Clock
2nd Start
4th Start
6th Start
1 Clock
1st Start
0000b
0000b
0000b
0000b
0000b
0000b
1 Clock
1 Clock
1 Clock
1 Clock
1 Clock
Memory
Write
Cycle
1 Clock
Memory
Write
Cycle
Memory
Write
Cycle
011Xb
011Xb
Memory
Write
Cycle
Memory
Write
Cycle
011Xb
011Xb
011Xb
Memory
Write
Cycle
011Xb
A[31:28] A[27:24] A[23:20] A[19:16]
A[31:28] A[27:24] A[23:20] A[19:16]
A[31:28] A[27:24] A[23:20] A[19:16]
A[31:28] A[27:24] A[23:20] A[19:16]
A[31:28] A[27:24] A[23:20] A[19:16]
A[31:28] A[27:24] A[23:20] A[19:16]
Load Address "5555" in 8 Clocks
Load Address "2AAA" in 8 Clocks
Load Address "2AAA" in 8 Clocks
Write the 3rd command to the device in LPC mode.
Load Address "5555" in 8 Clocks
Write the 5th command to the device in LPC mode.
Write the 2nd command to the device in LPC mode.
Write the 4th command to the device in LPC mode.
Load Address "5555" 8 Clocks
Write the 6th command to the device in LPC
Load Address "5555" in 8 Clocks
Write the 1st command to the device in LPC mode.
Address
Address
Address
Address
Address
Address
X101b
X101b
X010b
X010b
X101b
X101b
- 26 -
0101b
1010b
0101
b
1010b
0101b
0101b
1010b
0101b
0101b
1010b
0101b
0101b
0101b
1010b
1010b
0101b
0101b 0000b
0101b
Preliminary W49V002A
Load Data "55"
0000b
Load Data "55"
Load Data "80"
Load Data "AA"
0101b
in 2 Clocks
Load Data "40"
in 2 Clocks
in 2 Clocks
in 2 Clocks
in 2 Clocks
0101b
1010b
Load Data "AA"
1010b
in 2 Clocks
mode.
Data
Data
Data
Data
Data
Data
1000b
0100b
0101b
0101b
1010b
1010b
1111b Tri-State
1111b Tri-State
1111b Tri-State
1111b Tri-State
1111b Tri-State
1111b Tri-State
2 Clocks
2 Clocks
2 Clocks
2 Clocks
2 Clocks
2 Clocks
TAR
TAR
TAR
TAR
TAR
TAR
1 Clock
1 Clock
1 Clocks
1 Clock
1 Clock
0000b
0000b
1 Clock
0000b
Sync
0000b
Sync
0000b
0000b
Sync
Sync
Sync
Sync
TAR
TAR
TAR
TAR
TAR
TAR
Internal
program start
Internal
program start
Start next
command
Start next
command
Start next
command
1 Clock
Start next
command
1 Clock
1 Clock
1 Clock
Start next
command
1 Clock