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參數(shù)資料
| 型號： | W3HG2256M72ACER534D6MG |
| 廠商： | WHITE ELECTRONIC DESIGNS CORP |
| 元件分類： | DRAM |
| 英文描述： | 512M X 72 DDR DRAM MODULE, 0.5 ns, DMA240 |
| 封裝： | ROHS COMPLIANT, DIMM-240 |
| 文件頁數(shù)： | 7/12頁 |
| 文件大?。?/td> | 0K |
| 代理商： | W3HG2256M72ACER534D6MG |
WV3HG2256M72AER-D6
ADVANCED
4
White Electronic Designs Corporation (602) 437-1520 www.whiteedc.com
White Electronic Designs
October 2006
Rev. 2
RECOMMENDED DC OPERATING CONDITIONS
All Voltages Referenced to VSS
Parameter
Symbol
Rating
Units
Notes
Min.
Type
Max.
Supply Voltage
VCC
1.7
1.8
1.9
V
3
I/O Input Reference Voltage
VREF
0.49*VCC
0.50*VCC
0.51*VCC
V1
I/O Termination Voltage
VTT
VREF-0.04
VREF
VREF+0.04
V
2
SPD Supply Voltage
VCCSPD
1.7
—
3.6
V
Notes:
1. VREF is expected to equal VCCQ/2 of the transmitting device and to track variations in the DC level of the same. Peak-to-peak noise on VREF may not exceed ±1 percent of the
DC value. Peak-to-peak AC noise on VREF may not exceed ±2 percent of VREF. This measurement is to be taken at the nearest VREF bypass capacitor..
2. VTT is not applied directly to the device. VTT is a system supply for signal termination resistors, is expected to be set equal to VREF and must track variations in the DC level of VREF.
3. VCCQ of all IC's are tied to VCC.
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Min
Max
Units
VCC
Voltage on VCC pin relative to VSS
-0.5
2.3
V
VIN, VOUT Voltage on any pin relative to VSS
-0.5
2.3
V
TSTG
Storage Temperature
-55
100
°C
IL
Input leakage current; Any input 0V<VIN<VCC; VREF input 0V<VIN<0.95V;
Other pins not under test = 0V
Command/Address,
RAS#, CAS#, WE#,
CS#, CKE
CK, CK#
DM
-10
10
μA
IOZ
Output leakage current; 0V<VOUT<VCCQ; DQs and ODT are disable
DQ, DQS, DQS#
-10
10
μA
IVREF
VREF leakage current; VREF = Valid VREF level
-72
72
μA
CAPACITANCE
TA = 25°C, f = 100MHz, VCC = 1.8V
Parameter
Symbol
Min
Max
Units
Input Capacitance: (A0 ~ A13, BA0 ~ BA2, RAS#, CAS#, WE#)
CIN1
10
12
pF
Input Capacitance: (CKE0, CKE1), (ODT0, ODT1)
CIN2
10
12
pF
Input Capacitance: (CS0#, CS1#)
CIN3
10
12
pF
Input Capacitance: (CK0, CK0#)
CIN4
10
11
pF
Input Capacitance: (DM0 ~ DM8), (DQS0 ~ DQ17)
CIN5 (665)
911
pF
CIN5 (534, 403)
912
pF
Input/Output Capacitance: (DQ0 ~ DQ63), (CB0 ~ CB7)
COUT1 (665)
911
pF
COUT1 (534, 403)
912
pF
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