HDD128M72D18RPW 查看數據表（PDF） - Hanbit Electronics Co.,Ltd
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HDD128M72D18RPW
Hanbit Electronics Co.,Ltd
HDD128M72D18RPW Datasheet PDF : 14 Pages
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HANBit
HDD128M72D18RPW
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
PARAMETER
SYMBOL
DQ/DM/DQS input slew rate measured between
VIH(DC), VIL(DC) and VIL(DC), VIH(DC)
DCSLEW
DDR333
MIN
MAX
TBD
TBD
DDR266
MIN
MAX
TBD
TBD
Units Notes
V/ns a, m
Table 2 : Input Setup & Hold Time Derating for Slew Rate
INPUT SLEW RATE
TIS
TIH
0.5 V/ns
0
0
0.4 V/ns
+50
0
0.3 V/ns
+100
0
UNITS
ps
ps
ps
NOTES
i
i
i
Table 3 : Input/Output Setup & Hold Time Derating for Slew Rate
INPUT SLEW RATE
TDS
TDH
0.5 V/ns
0
0
0.4 V/ns
+75
+75
0.3 V/ns
+150
+150
UNITS
ps
ps
ps
NOTES
k
k
k
Table 4 : Input/Output Setup & Hold Derating for Rise/Fall Delta Slew Rate
DELTA SLEW RATE
TDS
TDH
+/- 0.0 V/ns
0
0
+/- 0.25 V/ns
+50
+50
+/- 0.5 V/ns
+100
+100
UNITS
ps
ps
ps
NOTES
j
j
j
Table 5 : Output Slew Rate Characteristice (X4, X8 Devices only)
SLEW RATE CHARACTERISTIC
TYPICAL RANGE
(V/NS)
MINIMUM
(V/NS)
Pullup Slew Rate
1.2 ~ 2.5
1.0
Pulldown slew
1.2 ~ 2.5
1.0
MAXIMUM
(V/NS)
4.5
4.5
NOTES
a,c,d,f,g,h
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)
Pullup Slew Rate
1.2 ~ 2.5
0.7
Pulldown slew
1.2 ~ 2.5
0.7
MAXIMUM
(V/NS)
5.0
5.0
NOTES
a,c,d,f,g,h
b,c,d,f,g,h
Table 7 : Output Slew Rate Matching Ratio Characteristics
AC CHARACTERISTICS
PARAMETER
DDR333
MIN
MAX
Output Slew Rate Matching Ratio (Pullup to Pulldown) TBD
TBD
DDR266
MIN
MAX
TBD
TBD
Notes
e,m
URL : www.hbe.co.kr
REV 1.0 (January. 2005)
9
HANBit Electronics Co.,Ltd.
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