參數(shù)資料
型號: W9412G6CH-5
廠商: WINBOND ELECTRONICS CORP
元件分類: DRAM
英文描述: 8M X 16 DDR DRAM, 0.7 ns, PDSO66
封裝: 0.400 INCH, 0.65 MM PITCH, ROHS COMPLIANT, TSOP2-66
文件頁數(shù): 21/55頁
文件大?。?/td> 2011K
代理商: W9412G6CH-5
W9412G6CH
Publication Release Date:Nov. 19, 2007
- 28 -
Revision A07
AC Characteristics and Operating Condition, continued
-45
-5
SYM.
PARAMETER
MIN. MAX. MIN. MAX.
UNIT NOTES
tIS
Input Setup Time
0.75
0.8
tIH
Input Hold Time
0.75
0.8
tIPW
Control & Address Input Pulse Width (for each input)
2.2
tHZ
Data-out High-impedance Time from CLK, CLK
-0.7
0.7
-0.7
0.7
tLZ
Data-out Low-impedance Time from CLK, CLK
-0.7
0.7
-0.7
0.7
tT(SS)
SSTL Input Transition
0.5
1.5
0.5
1.5
nS
tWTR
Internal Write to Read Command Delay
2
1
tCK
tXSNR
Exit Self Refresh to non-Read Command
72
75
nS
tXSRD
Exit Self Refresh to Read Command
200
tCK
tREFI
Refresh Interval Time (4k / 64mS)
15.6
S
17
tMRD
Mode Register Set Cycle Time
9
10
nS
-6
-75
SYM.
PARAMETER
MIN.
MAX.
MIN.
MAX.
UNIT NOTES
tRC
Active to Ref/Active Command Period
54
60
tRFC
Ref to Ref/Active Command Period
70
tRAS
Active to Precharge Command Period
42
100000
45
120000
tRCD
Active to Read/Write Command Delay Time
18
20
tRAP
Active to Read with Auto-precharge Enable
18
20
nS
tCCD
Read/Write(a) to Read/Write(b) Command Period
1
tCK
tRP
Precharge to Active Command Period
18
20
tRRD
Active(a) to Active(b) Command Period
12
15
tWR
Write Recovery Time
15
tDAL
Auto-precharge Write Recovery + Precharge Time
-
18
CL = 2
7.5
12
7.5
12
CL = 2.5
6
12
7.5
12
tCK
CLK Cycle Time
CL = 3
6
12
7.5
12
tAC
Data Access Time from CLK, CLK
-0.7
0.7
-0.75
0.75
tDQSCK DQS Output Access Time from CLK, CLK
-0.6
0.6
-0.75
0.75
16
tDQSQ
Data Strobe Edge to Output Data Edge Skew
0.4
0.5
nS
tCH
CLk High Level Width
0.45
0.55
0.45
0.55
tCL
CLK Low Level Width
0.45
0.55
0.45
0.55
tCK
11
tHP
CLK Half Period (minimum of actual Tch, Tcl)
min,
(tCL,TCH)
Min.
(tCL,tCH)
tQH
DQ Output Data Hold Time from DQS
tHP-0.5
tHP-0.75
nS
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