w49v002fa Winbond Electronics Corp America, w49v002fa Datasheet - Page 25

• Manufacturer Part Number: w49v002fa
• Description: 256k X 8 Cmos Flash Memory With Fwh Interface
• Manufacturer: Winbond Electronics Corp America

Timing Waveforms for FWH Interface Mode, continued
Toggle Bit Timing Diagram
FWH[3:0]
#RESET
FWH[3:0]
#RESET
FWH[3:0]
#RESET
FWH4
FWH4
FWH4
CLK
CLK
CLK
1 Clock
1 Clock
1 Clock
Start
1101b
1110b
1101b
Start
Start
1 Clock
1 Clock
1 Clock
IDSEL
0000b
IDSEL
0000b
IDSEL
0000b
XXXXb
XXXXb
XXXXb
XXXXb
XXXXb
XXXXb
Write the last command(program or erase) to the device in FWH mode.
XXA[17:16]b
XXXXb
XXXXb
Load Address "An" in 7 Clocks
Read the DQ6 to see if the internal write complete or not.
Load Address in 7 Clocks
Load Address in 7 Clocks
When internal write complete, the DQ6 will stop toggle.
A[15:12]
XXXXb
XXXXb
Address
Address
Address
A[11:8]
XXXXb
XXXXb
A[7:4]
XXXXb
XXXXb
- 25 -
XXXXb
XXXXb
A[3:0]
M Size
0000b
0000b
M Size
M Size
0000b
Publication Release Date: February 19, 2002
D[3:0]
Load Data "Dn"
1111b
1111b
in 2 Clocks
2 Clocks
2 Clocks
Data
TAR
TAR
Tri-State
D[7:4]
Tri-State
1 Clock
1 Clock
1111b
0000b
0000b
Sync
Sync
2 Clocks
TAR
Tri-State
Data out 2 Clocks
Data out 2 Clocks
XXXXb
XXXXb
W49V002FA
Data
Data
1 Clock
X,D6,XXb
X,D6,XXb
0000b
Sync
1111b
1111b
1111b
2 Clocks
2 Clocks
2 Clocks
TAR
TAR
TAR
Revision A2
Tri-State
Tri-State
Tri-State
1 Clock
1 Clock
Next Start
Next Start
1 Clock
Next Start