Internet Data Sheet
HYB18H256321BF
256-Mbit GDDR3
Parameter
Symbol
Limit Values
Typ.
Unit Note
Min.
Max.
1)3)
Power Supply Voltage
Power Supply Voltage for I/O Buffer
Reference Voltage
V
DD, VDDA
1.7
1.8
1.8
—
1.9
1.9
V
1)3)
VDDQ
VREF
VOL(DC)
IIL
1.7
V
4)
0.69*VDDQ
—
0.71*VDDQ
0.8
V
Output Low Voltage
—
V
5)
5)
Input leakage current
–5.0
–5.0
–5.0
—
+5.0
μΑ
μΑ
μΑ
CLK Input leakage current
Output leakage current
IILC
—
+5.0
IOL
—
+5.0
1)
VDDQ tracks with VDD. AC parameters are measured with VDD and VDDQ tied together.
2) HYB18H256321BF–11/12/14
3) HYB18H256321BF–10
4)
VREF is expected to equal 70% of VDDQ for the transmitting device and to track variations in the DC level of the same. Peak-to-peak noise
on VREF may not exceed ±2% VREF (DC). Thus, from 70% of VDDQ, VREF is allowed ± 19mV for DC error and an additional ± 27mV for AC
noise.
5)
I
IL and IOL are measured with ODT disabled.
4.3
DC & AC Logic Input Levels
TABLE 11
DC & AC Logic Input Levels (0 °C ≤ Tc ≤ 85 °C)
Parameter
Symbol
Min.
Limit Values
Unit Note
Max.
1)
Input logic high voltage, DC
Input logic low voltage, DC
Input logic high voltage, AC
Input logic low voltage, AC
Input logic high, DC, RESET pin
Input logic low, DC, RESET pin
Input Logic High, DC, MF pin
Input Logic Low,DC, MF pin
VIH(DC)
VIL(DC)
VIH(AC)
VIL(AC)
V
REF + 0.15
—
V
1)
—
VREF -0.15
V
2)3)
V
REF + 0.25
—
V
2)3)
—
V
REF - 0.25
DDQ + 0.3
V
V
V
V
V
IHR(DC)
ILR(DC)
IHMF(DC)
ILMF(DC)
0.65 × VDDQ
-0.3
V
V
V
0.35 × VDDQ
4)
VDD
VDD + 0.3
V
–0.3
0
V
1) The DC values define where the input slew rate requirements are imposed, and the input signal must not violate these levels in order to
maintain a valid level.
2) Input slew rate = 3 V/ns. If the input slew rate is less than 3 V/ns, input timing may be compromised. All slew rates are measured between
VIL(DC) and VIH(DC).
3)
V
IH overshoot: VIH(max) = VDDQ+0.5V for a pulse width ≤ 500ps and the pulse width cannot be greater than 1/3 of the cycle rate. VIL
undershoot: VIL(min) = 0 V for a pulse width ≤ 500ps and the pulse width cannot be greater than 1/3 of the cycle rate.
4) The MF pin must be hard-wired on board to either VDD or VSS
.
Rev. 0.80, 2007-09
24
09132007-07EM-7OYI
QIMONDA [ QIMONDA AG ]
