EBE51UD8AGWA Datasheet, PDF (13/25 Pages) Elpida Memory – 512MB Unbuffered DDR2 SDRAM DIMM

EBE51UD8AGWA
DC Characteristics 2 (TC = 0°C to +85°C, VDD, VDDQ = 1.8V ± 0.1V)
(DDR2 SDRAM Component Specification)
Parameter
Symbol
Value
Unit
Notes
Input leakage current
ILI
2
µA
VDD ≥ VIN ≥ VSS
Output leakage current
ILO
Minimum required output pull-up under AC
test load
VOH
Maximum required output pull-down under
AC test load
VOL
Output timing measurement reference level VOTR
5
VTT + 0.603
VTT – 0.603
0.5 × VDDQ
µA
VDDQ ≥ VOUT ≥ VSS
V
5
V
5
V
1
Output minimum sink DC current
IOL
+13.4
mA
3, 4, 5
Output minimum source DC current
IOH
–13.4
mA
2, 4, 5
Notes: 1. The VDDQ of the device under test is referenced.
2. VDDQ = 1.7V; VOUT = 1.42V.
3. VDDQ = 1.7V; VOUT = 0.28V.
4. The DC value of VREF applied to the receiving device is expected to be set to VTT.
5. After OCD calibration to 18Ω at TA = 25°C, VDD = VDDQ = 1.8V.
DC Characteristics 3 (TC = 0°C to +85°C, VDD, VDDQ = 1.8V ± 0.1V)
(DDR2 SDRAM Component Specification)
Parameter
Symbol
min.
max.
Unit Notes
AC differential input voltage
VID (AC)
0.5
VDDQ + 0.6
V
1, 2
AC differential cross point voltage
VIX (AC)
0.5 × VDDQ − 0.175 0.5 × VDDQ + 0.175 V
2
AC differential cross point voltage
VOX (AC)
0.5 × VDDQ − 0.125 0.5 × VDDQ + 0.125 V
3
Notes: 1. VID(AC) specifies the input differential voltage |VTR -VCP| required for switching, where VTR is the true
input signal (such as CK, DQS, LDQS or UDQS) and VCP is the complementary input signal (such as
/CK, /DQS, /LDQS or /UDQS). The minimum value is equal to VIH(AC) − VIL(AC).
2. The typical value of VIX(AC) is expected to be about 0.5 × VDDQ of the transmitting device and VIX(AC)
is expected to track variations in VDDQ . VIX(AC) indicates the voltage at which differential input signals
must cross.
3. The typical value of VOX(AC) is expected to be about 0.5 × VDDQ of the transmitting device and
VOX(AC) is expected to track variations in VDDQ . VOX(AC) indicates the voltage at which differential
output signals must cross.
VDDQ
VTR
VCP
VID
Crossing point
VIX or VOX
VSSQ
Differential Signal Levels*^{1, 2}
Preliminary Data Sheet E0921E10 (Ver. 1.0)
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