RG82845SL5YQ Datasheet, PDF (122/148 Pages) Intel Corporation – Intel® 845 Chipset: 82845 Memory Controller Hub (MCH) for SDR

Electrical Characteristics
R
6.4
DC Characteristics
Table 21. DC Characteristics
Symbol
Signal
Group
Parameter
Min
Typ
Max
Unit
Notes
I/O Buffer Supply Voltage
VCCSM
(u)
PC133 SDRAM I/O Voltage
VCC1_8
(t)
1.8V I/O Supply Voltage
VCC1_5
(s)
Core and AGP Voltage
VTT
(r)
Host AGTL+ Termination Voltage
3.135
1.71
1.425
N/A
3.3
1.8
1.5
N/A
3.465
V
1.89
V
1.575
V
1.75
V
Reference Voltages
HVREF
(d)
Host Address and Data Reference (2/3 x VTT) – 2% 2/3 x VTT (2/3 x VTT) + 2% V
Voltage
HSWING
(d)
Host Compensation Reference
Voltage
(1/3 x VTT) – 2% 1/3 x VTT (1/3 x VTT) + 2% V
HI_REF
(j)
Hub Interface Reference Voltage
0.48 x VCC1_8 1/2 x VCC1_8 0.52 x VCC1_8 V
SDREF
(n)
SDRAM Reference Voltage
0.49 x VCCSM 1/2 x VCCSM 0.51 x VCCSM V
AGPREF
(h)
AGP Reference Voltage
0.48 x VCC1_5 1/2 x VCC1_5 0.52 x VCC1_5 V
System Bus Interface
VIL
(a,c) Host AGTL+ Input Low Voltage
VIH
(a,c) Host AGTL+ Input High Voltage
(2/3 x VTT) + 0.1
VOL
(a,b) Host AGTL+ Output Low Voltage
VOH
(a,b) Host AGTL+ Output High Voltage
VTT-0.1
IOL
(a,b) Host AGTL+ Output Low Current
ILEAK
(a,c)
CPAD
(a,c)
3.3 V Interface
Host AGTL+ Input Leakage
Current
Host AGTL+ Input Capacitance
(2/3 x VTT) – 0.1 V
V
(1/3 x VTT) + 0.1 V
V
VTTmax / 0.75Rtt mA
±15
µA
Rttmin = 45 Ω
Rtttyp = 50 Ω
Rttmax = 55 Ω
VOL<Vpad<
VTT
1.0
pF
VIL
(k,m,p) Input Low Voltage
VIH
(k,m,p) Input High Voltage
VOL
(k,l)
Output Low Voltage
VOH
(k,l)
Output High Voltage
IOL
(k,l)
Output Low Current
IOH
(k,l)
Output High Current
ILEAK
(k,m,p) Input Leakage Current
SDREF + 2.0
2.4
-4
SDREF – 2.0
0.4
4
±100
V
V
V
V
mA
@VOL_S max
mA
@VOH_S max
µA 0<Vin<VCC3_3
122
Intel^® 82845 MCH for SDR Datasheet