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參數(shù)資料
| 型號： | HDD128M72D18RPW-16B |
| 廠商： | Hanbit Electronics Co.,Ltd. |
| 英文描述： | DDR SDRAM Module 1024Mbyte (128Mx72bit), based on 64Mx8, 4Banks, 8K Ref., 184Pin-DIMM with PLL & Register |
| 中文描述： | DDR SDRAM內(nèi)存模塊1024Mbyte（128Mx72bit），在64Mx8，4Banks，8K的參考依據(jù)。，184Pin與鎖相環(huán)內(nèi)存 |
| 文件頁數(shù)： | 9/14頁 |
| 文件大小： | 459K |
| 代理商： | HDD128M72D18RPW-16B |
HANBit
HDD128M72D18RPW
URL : www.hbe.co.kr 9 HANBit Electronics Co.,Ltd.
REV 1.0 (January. 2005)
System Characteristics for DDR SDRAM
The following specification parameters are required in systems using DDR333, DDR266 devices to ensure proper
system performance. these characteristics are for system simulation purposes and are guaranteed by design.
Table 1 : Input Slew Rate for DQ, DQS, and DM
AC CHARACTERISTICS
DDR333
MIN
DDR266
MIN
PARAMETER
SYMBOL
MAX
MAX
Units
Notes
DQ/DM/DQS input slew rate measured between
VIH(DC), VIL(DC) and VIL(DC), VIH(DC)
Table 2 : Input Setup & Hold Time Derating for Slew Rate
DCSLEW
TBD
TBD
TBD
TBD
V/ns
a, m
INPUT SLEW RATE
TIS
TIH
UNITS
NOTES
0.5 V/ns
0
0
ps
i
0.4 V/ns
+50
0
ps
i
0.3 V/ns
+100
0
ps
i
Table 3 : Input/Output Setup & Hold Time Derating for Slew Rate
INPUT SLEW RATE
TDS
TDH
UNITS
NOTES
0.5 V/ns
0
0
ps
k
0.4 V/ns
+75
+75
ps
k
0.3 V/ns
+150
+150
ps
k
Table 4 : Input/Output Setup & Hold Derating for Rise/Fall Delta Slew Rate
DELTA SLEW RATE
TDS
TDH
UNITS
NOTES
+/- 0.0 V/ns
0
0
ps
j
+/- 0.25 V/ns
+50
+50
ps
j
+/- 0.5 V/ns
+100
+100
ps
j
Table 5 : Output Slew Rate Characteristice (X4, X8 Devices only)
SLEW RATE CHARACTERISTIC
TYPICAL RANGE
(V/NS)
MINIMUM
(V/NS)
MAXIMUM
(V/NS)
NOTES
Pullup Slew Rate
1.2 ~ 2.5
1.0
4.5
a,c,d,f,g,h
Pulldown slew
1.2 ~ 2.5
1.0
4.5
b,c,d,f,g,h
Table 6 : Output Slew Rate Characteristice (X16 Devices only)
SLEW RATE CHARACTERISTIC
TYPICAL RANGE
(V/NS)
MINIMUM
(V/NS)
MAXIMUM
(V/NS)
NOTES
Pullup Slew Rate
1.2 ~ 2.5
0.7
5.0
a,c,d,f,g,h
Pulldown slew
1.2 ~ 2.5
0.7
5.0
b,c,d,f,g,h
Table 7 : Output Slew Rate Matching Ratio Characteristics
AC CHARACTERISTICS
DDR333
MIN
DDR266
MIN
PARAMETER
MAX
MAX
Notes
Output Slew Rate Matching Ratio (Pullup to Pulldown)
TBD
TBD
TBD
TBD
e,m
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