參數(shù)資料
型號(hào): UPD44164082F5-E50-EQ1
廠商: NEC Corp.
英文描述: 18M-BIT DDRII SRAM 2-WORD BURST OPERATION
中文描述: 1800萬(wàn)位的SRAM 2條DDRII字爆發(fā)運(yùn)作
文件頁(yè)數(shù): 14/32頁(yè)
文件大?。?/td> 282K
代理商: UPD44164082F5-E50-EQ1
14
Data Sheet M15821EJ7V2DS
μ
PD44164082, 44164182, 44164362
Read and Write Cycle
Parameter
Symbol
-E40
-E50
-E60
Unit
Note
(250 MHz)
(200 MHz)
(167 MHz)
MIN.
MAX.
MIN.
MAX.
MIN.
MAX.
Clock
Average Clock cycle time (K, /K, C, /C) TKHKH
Clock phase jitter (K, /K, C, /C)
Clock HIGH time (K, /K, C, /C)
Clock LOW time (K, /K, C, /C)
Clock to /clock (K
/K., C
/C.)
Clock to /clock (/K
K., /C
C.)
Clock to data clock 200 to 250 MHz
(K
C., /K
/C.)
167 to 200 MHz
133 to 167 MHz
DLL lock time (K, C)
K static to DLL reset
4.0
8.4
5.0
8.4
6.0
8.4
ns
ns
ns
ns
ns
ns
ns
1
2
3
TKC var
TKHKL
TKLKH
TKH /KH
T /KHKH
TKHCH
TKC lock
TKC reset
0.2
0.2
0.2
1.6
2.0
2.4
1.6
2.0
2.4
1.8
2.2
2.7
1.8
2.2
2.7
0
1.8
0
2.3
0
2.3
0
2.8
0
2.8
0
2.8
< 133 MHz
0
3.55
0
3.55
0
3.55
1,024
1,024
1,024
Cycle
ns
30
30
30
Output Times
C, /C HIGH to output valid
C, /C HIGH to output hold
C, /C HIGH to echo clock valid
C, /C HIGH to echo clock hold
CQ, /CQ HIGH to output valid
CQ, /CQ HIGH to output hold
C HIGH to output High-Z
C HIGH to output Low-Z
TCHQV
TCHQX
TCHCQV
TCHCQX
TCQHQV
TCQHQX
TCHQZ
TCHQX1
0.45
0.45
0.5
ns
ns
ns
ns
ns
ns
ns
ns
–0.45
–0.45
–0.5
0.45
0.45
0.5
–0.45
–0.45
–0.5
0.3
0.35
0.4
4
4
–0.3
–0.35
–0.4
0.45
0.45
0.5
–0.45
–0.45
–0.5
Setup Times
Address valid to K rising edge
Synchronous load input (/LD),
read write input (R, /W) valid to
K rising edge
Data inputs and write data select
inputs (/BWx, /NWx) valid to
K, /K rising edge
TAVKH
TIVKH
TDVKH
0.5
0.6
0.7
ns
ns
ns
5
5
5
0.5
0.6
0.7
0.35
0.4
0.5
Hold Times
K rising edge to address hold
K rising edge to
synchronous load input (/LD),
read write input (R, /W) hold
K, /K rising edge to data inputs and
write data select inputs (/BWx, /NWx)
hold
TKHAX
TKHIX
TKHDX
0.5
0.6
0.7
ns
ns
ns
5
5
5
0.5
0.6
0.7
0.35
0.4
0.5
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