參數(shù)資料
型號(hào)： HY5PS1G431CFP-S5
廠商： HYNIX SEMICONDUCTOR INC
元件分類(lèi)： DRAM
英文描述： 1Gb DDR2 SDRAM
中文描述： 256M X 4 DDR DRAM, 0.45 ns, PBGA60
封裝： ROHS COMPLIANT, FBGA-60
文件頁(yè)數(shù)： 11/37頁(yè)
文件大?。?/td> 539K
代理商： HY5PS1G431CFP-S5
Rev. 0.2 / Dec 2006
11
HY5PS1G431C(L)FP
HY5PS1G831C(L)FP
HY5PS1G1631C(L)FP
3. AC & DC Operating Conditions
3.1 DC Operating Conditions
3.1.1 Recommended DC Operating Conditions (SSTL_ 1.8)
Note:
1. Min. Typ. and Max. values increase by 100mV for C3(DDR2-533 3-3-3) speed option.
2. VDDQ tracks with VDD,VDDL tracks with VDD. AC parameters are measured with VDD,VDDQ and VDD.
3. The value of VREF may be selected by the user to provide optimum noise margin in the system. Typically the
value of VREF is expected to be about 0.5 x VDDQ of the transmitting device and VREF is expected to track varia-
tions in VDDQ
4. Peak to peak ac noise on VREF may not exceed +/-2% VREF (dc).
5. VTT of transmitting device must track VREF of receiving device.
3.1.2 ODT DC electrical characteristics
Note :
1. Test condition for Rtt measurements
Measurement Definition for Rtt(eff): Apply V
IH
(ac) and V
IL
(ac) to test pin separately, then measure current I(V
IH
(ac))
and I(V
IL
(ac)) respectively. V
IH
(ac), V
IL
(ac), and VDDQ values defined in SSTL_18
Measurement Definition for VM : Measurement Voltage at test pin(mid point) with no load.
Symbol
Parameter
Rating
Units
Notes
Min.
1.7
Typ.
1.8
Max.
1.9
VDD
Supply Voltage
V
1
VDDL
Supply Voltage for DLL
1.7
1.8
1.9
V
1,2
VDDQ
Supply Voltage for Output
1.7
1.8
1.9
V
1,2
VREF
Input Reference Voltage
0.49*VDDQ
0.50*VDDQ
0.51*VDDQ
mV
3,4
VTT
Termination Voltage
VREF-0.04
VREF
VREF+0.04
V
5
PARAMETER/ CONDITION
SYMBOL
MIN
NOM
MAX
UNITS
NOTES
Rtt effective impedance value for EMRS(A6,A2)=0,1; 75 ohm
Rtt effective impedance value for EMRS(A6,A2)=1,0; 150 ohm
Rtt effective impedance value for EMRS(A6,A2)=1,1; 50 ohm
Deviation of VM with respect to VDDQ/2
Rtt1(eff)
Rtt2(eff)
Rtt3(eff)
delta VM
60
120
40
-6
75
150
50
90
180
60
+6
ohm
ohm
ohm
%
1
1
1
1
Rtt(eff) =
V
IH
(ac) - V
IL
(ac)
I(V
IH
(ac)) - I(V
IL
(ac))
delta VM =
2 x Vm
VDDQ
x 100%
- 1
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