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參數資料
型號: W49V002FAQ
廠商: WINBOND ELECTRONICS CORP
元件分類: PROM
英文描述: 256K X 8 CMOS FLASH MEMORY WITH FWH INTERFACE
中文描述: 256K X 8 FLASH 3.3V PROM, 11 ns, PDSO32
封裝: 8 X 14 MM, STSOP-32
文件頁數: 24/32頁
文件大小: 300K
代理商: W49V002FAQ
W49V002FA
- 24 -
Timing Waveforms for FWH Interface Mode, continued
#DATA Polling Timing Diagram
Read the DQ7 to see if the internal write complete or not.
FWH4
FWH[3:0]
Start
Load Address in 7 Clocks
CLK
1 Clock
2 Clocks
XXXXb
An[15:12]
Address
Sync
TAR
1111b
Tri-State
0000b
An[11:8]
An[7:4]
An[3:0]
Data out 2 Clocks
Dn7,xxx
Data
XXXXb
FWH4
FWH[3:0]
Start
Load Address in 7 Clocks
CLK
1 Clock
2 Clocks
Address
Sync
TAR
1111b
Tri-State
0000b
Data out 2 Clocks
Data
When internal write complete, the DQ7 will equal to Dn7.
Dn7,xxx
XXXXb
An[15:12]
An[11:8]
An[7:4]
An[3:0]
FWH4
FWH[3:0]
Start
Load Address "An" in 7 Clocks
CLK
1 Clock
2 Clocks
An[15:12]
Load Data "Dn"
Dn[7:4]
Write the last command(program or erase) to the device in FWH mode.
Address
Sync
TAR
Data
1111b
Tri-State
0000b
An[11:8]
An[7:4]
An[3:0]
Dn[3:0]
IDSEL
IDSEL
IDSEL
0000b
0000b
0000b
M Size
M Size
M Size
XXXXb
XXA[17:16]b
XXXXb
XXXXb
XXA[17:16]b
XXXXb
XXXXb
XXA[17:16]b
XXXXb
1 Clock
2 Clocks
TAR
1111b
Tri-State
Next Start
1 Clock
2 Clocks
TAR
1111b
Tri-State
Next Start
1 Clock
2 Clocks
TAR
1111b
Tri-State
Next Start
1 Clock
1 Clock
0000b
1101b
1 Clock
1 Clock
0000b
1101b
1 Clock
1 Clock
0000b
1110b
#RESET
#RESET
#RESET
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