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EBE51RD8AEFA-6E-E Datasheet(PDF) 14 Page - Elpida Memory

Part # EBE51RD8AEFA-6E-E
Description  512MB Registered DDR2 SDRAM DIMM
PDF  22 Pages
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Manufacturer  ELPIDA [Elpida Memory]
Direct Link  http://www.elpida.com/en
Logo ELPIDA - Elpida Memory

EBE51RD8AEFA-6E-E Datasheet(HTML) 14 Page - Elpida Memory

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EBE51RD8AEFA-6
Data Sheet E0789E11 (Ver. 1.1)
14
ODT DC Electrical Characteristics (TC = 0°C to +85
°C, VDD, VDDQ = 1.8V ± 0.1V)
(DDR2 SDRAM Component Specification)
Parameter
Symbol
min.
typ.
max.
Unit
Note
Rtt effective impedance value for EMRS (A6, A2)
= 0, 1; 75 Ω
Rtt1(eff)
60
75
90
1
Rtt effective impedance value for EMRS (A6, A2)
= 1, 0; 150 Ω
Rtt2(eff)
120
150
180
1
Rtt effective impedance value for EMRS (A6, A2)
= 1, 1; 50 Ω
Rtt3(eff)
40
50
60
1
Deviation of VM with respect to VDDQ/2
∆VM
−6
+6
%
1
Note: 1. Test condition for Rtt measurements.
Measurement Definition for Rtt(eff)
Apply VIH (AC) and VIL (AC) to test pin separately, then measure current I(VIH(AC)) and I(VIL(AC)) respectively.
VIH(AC), and VDDQ values defined in SSTL
_18.
VIH(AC)
− VIL(AC)
I(VIH(AC))
− I(VIL(AC))
Rtt(eff) =
Measurement Definition for VM
Measure voltage (VM) at test pin (midpoint) with no load.
2
× VM
VDDQ
∆VM =
× 100%
− 1
OCD Default Characteristics (TC = 0°C to +85
°C, VDD, VDDQ = 1.8V ± 0.1V)
(DDR2 SDRAM Component Specification)
Parameter
min.
typ.
max.
Unit
Notes
Output impedance
12.6
18
23.4
1
Pull-up and pull-down mismatch
0
4
1, 2
Output slew rate
1.5
5
V/ns
3, 4
Notes: 1. Impedance measurement condition for output source DC current: VDDQ = 1.7V; VOUT = 1420mV;
(VOUT
−VDDQ)/IOH must be less than 23.4Ω for values of VOUT between VDDQ and VDDQ−280mV.
Impedance measurement condition for output sink DC current: VDDQ = 1.7V; VOUT = 280mV;
VOUT/IOL must be less than 23.4
Ω for values of VOUT between 0V and 280mV.
2. Mismatch is absolute value between pull up and pull down, both are measured at same temperature and
voltage.
3. Slew rate measured from VIL(AC) to VIH(AC).
4. The absolute value of the slew rate as measured from DC to DC is equal to or greater than the slew rate
as measured from AC to AC. This is guaranteed by design and characterization.
Pin Capacitance (TA = 25°C, VDD = 1.8V ± 0.1V)
Parameter
Symbol
Pins
min.
max.
Unit
Notes
Input capacitance
CI1
Address, /RAS, /CAS,
/WE, /CS, CKE, ODT
2.5
3.5
pF
1
Input capacitance
CI2
CK, /CK
2.0
3.0
pF
2
Data and DQS input/output
capacitance
CO
DQ, DQS, /DQS, DM, CB
2.5
3.5
pF
3
Notes: 1. Register component specification.
2. PLL component specification.
3. DDR2 SDRAM component specification.


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