82845G Datasheet, PDF (152/193 Pages) Intel Corporation – Intel 82845G/82845GL/82845GV Graphics and Memory Controller Hub (GMCH)

Electrical Characteristics
Table 6-6. DC Characteristics (Sheet 2 of 2)
Symbol
Signal
Group
Parameter
Min
Nom
Max
Unit
Notes
3.3V SDR System Memory: Functional Operating Range (VCC=3.3V±5%)
V_{IL_SDR}
(p,r) Input Low Voltage
V_{IH_SDR}
V_{OL_SDR}
V_{OH_SDR}
I_{OL_SDR}
I_{OH_SDR}
(p,r) Input High Voltage
(p,q)
(p,q)
(p,q)
(p,q)
Output Low Voltage
Output High Voltage
Output Low Current
Output High Current
SMVREF
(SDR)+0.350
2.4
-4
I_{LEAK_SDR}
(p,r) Input Leakage Current
C_{IN_SDR}
(p,r) Input Capacitance
3.3V Synchronization signals: Functional Operating Range (VCC=3.3V±5%)
V_IH
(t) Output High Voltage
2.4
V_IL
(t) Output Low Voltage
0.0
I_OH
(t) Output High Current
-8
I_OL
(t) Output Low Current
8
Clocks and Miscellaneous Signals
V_IL
V_IH
V_OL
V_OH
I_OL
I_OH
I_LEAK
C_IN
V_Cross(Abs)
V_Cross(Rel)
(y) 3.3 V CMOS Input Low Voltage
(y) 3.3 V CMOS Input High Voltage
(y) 3.3 V CMOS Output Low Voltage
(y) 3.3 V CMOS Output High Voltage
(y) 3.3 V CMOS Output Low Current
(y) 3.3 V CMOS Output High Current
(y) 3.3 V CMOS Input Leakage Current
(y) 3.3 V CMOS Input Capacitance
(j) Absolute Crossing Voltage
(j) Relative Crossing Voltage
2.0
2.4
-4
0.250
Note 5
SMVREF
(SDR)–0.350
V
V
0.4
V
V
4
mA @V_{OL_SDR} max
mA @V_{OH_SDR} max
±10
µA
0<Vin<
VCCSM(SDR)
5.5
pF F_C=1 MHz
3.465
V
0.5
V
MA
mA
0.8
0.4
4
±10
5.5
0.550
Note 5
V
V
V
V
mA @V_OL max
mA @V_OH min
µA 0<Vin<VCC3
pF F_C=1 MHz
V 1,2,4,5
V 1,2,3,4,5
NOTES:
1. Crossing voltage is defined as the instantaneous voltage value when the rising edge of HCLKP equals the
falling edge of HCLKN.
2. V_IH(Ave) is the statistical average of the V_IH measured by the oscilloscope.
3. V_IH(Ave) can be measured directly using “Vtop” on Agilent* scopes and “High” on Tektronix* scopes.
4. The crossing point must meet the absolute and relative crossing point specifications simultaneously.
5. V_Cross(Rel) Maximum = 0.250+0.5(V_IH(Ave)–0.71); V_Cross(Rel) Minimum = 0.550+0.5(V_IH(Ave)–0.71). See
Figure 6-1.
152
Intel^® 82845G/82845GL/82845GV GMCH Datasheet