Intel G470 BX80623G470 用户手册
产品代码
BX80623G470
26
Intel
®
Celeron
®
Processor on 0.13 Micron Process in the 478-Pin Package
Datasheet
Electrical Specifications
Table 11. Asynchronous GTL+ Signal Group DC Specifications
Symbol
Parameter
Min
Max
Unit
Notes
1
NOTES:
1.
Unless otherwise noted, all specifications in this table apply to all processor frequencies.
V
IH
Input High Voltage Asynch GTL+
1.10*GTLREF
VCC
V
2,
3,
4
2.
V
IH
and V
OH
may experience excursions above VCC. However, input signal drivers must comply with the
signal quality specifications in
.
3.
The VCC referred to in these specifications refers to instantaneous VCC.
4.
This specification applies to the asynchronous GTL+ signal group.
V
IL
Input Low Voltage Asynch. GTL+
0
0.9*GTLREF
V
V
OH
Output High Voltage
N/A
VCC
V
,
,
5
5.
All outputs are open-drain.
I
OL
Output Low Current
N/A
50
mA
6,
7
6.
The maximum output current is based on maximum current handling capability of the buffer and is not spec-
ified into the test load shown in
ified into the test load shown in
.
7.
VOL max of 0.270 V is guaranteed when driving into a test load of 50
Ω
as indicated in
for the Asyn-
chronous GTL+ signals.
I
HI
Pin Leakage High
N/A
100
µA
8
8.
Leakage to VSS with pin held at VCC.
I
LO
Pin Leakage Low
N/A
500
µA
9
9.
Leakage to VCC with pin held at 300 mV.
R
on
Buffer On Resistance Asynch GTL+
7
11
Ω
10
10.
Refer to the processor I/O Buffer Models for I/V characteristics.
Table 12. PWRGOOD and TAP Signal Group DC Specifications
Symbol
Parameter
Min
Max
Unit
Notes
1
NOTES:
1.
Unless otherwise noted, all specifications in this table apply to all processor frequencies.
V
HYS
Input Hysteresis
200
300
mV
2
2.
V
HYS
represents the amount of hysteresis, nominally centered about 1/2 VCC for all TAP inputs.
V
T+
Input Low to High
Threshold Voltage
Threshold Voltage
1/2*(VCC + V
HYS
_
MIN
)
1/2*(VCC + V
HYS
_
MAX
)
V
3
3.
The VCC referred to in these specifications refers to instantaneous VCC.
V
T-
Input High to Low
Threshold Voltage
Threshold Voltage
1/2*(VCC – V
HYS
_
MAX
)
1/2*(VCC – V
HYS
_
MIN
)
V
V
OH
Output High Voltage
N/A
VCC
V
4,
5
4.
All outputs are open-drain.
5.
The TAP signal group must comply with the signal quality specifications in
.
I
OL
Output Low Current
N/A
40
mA
6,
7
6.
The maximum output current is based on maximum current handling capability of the buffer and is not spec-
ified into the test load shown in
ified into the test load shown in
.
7.
Vol max of 0.320 V is guaranteed when driving into a test load of 50
Ω
as indicated in
for the TAP
signals.
I
HI
Pin Leakage High
N/A
100
µA
8
8.
Leakage to VSS with pin held at VCC.
I
LO
Pin Leakage Low
N/A
500
µA
9
9.
Leakage to VCC with pin held at 300 mV
R
ON
Buffer On Resistance
8.75
13.75
Ω
10
10.
Refer to I/O Buffer Models for I/V characteristics.