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參數資料
| 型號： | W127 |
| 英文描述： | Clocks and Buffers |
| 中文描述： | 時鐘和緩沖器 |
| 文件頁數： | 13/20頁 |
| 文件大?。?/td> | 200K |
| 代理商： | W127 |
W127/W127-A
PRELIMINARY
Document #: 38-07225 Rev. *A
Page 13 of 20
Absolute Maximum Ratings
[5.]
Stresses greater than those listed in this table may cause per-
manent damage to the device. These represent a stress rating
only. Operation of the device at these or any other conditions
above those specified in the operating sections of this specifi-
cation is not implied. Maximum conditions for extended peri-
ods may affect reliability.
.
Parameter
V
DDQ3
, V
IN
T
STG
T
B
T
A
ESD
PROT
Description
Rating
–
0.5 to +7.0
–
65 to +150
–
55 to +125
0 to +70
2 (min.)
Unit
V
°
C
°
C
°
C
kV
Voltage on any Pin with Respect to GND
Storage Temperature
Ambient Temperature under Bias
Operating Temperature
Input ESD Protection
3.3V DC Electrical Characteristics
T
A
= 0
°
C to +70
°
C, V
DDQ3
= V
DDQ2
= 3.3V±5% (3.135
–
3.465V)
Parameter
Description
Supply Current
I
DD
Combined 3.3V Supply Current
Test Condition
Min.
Typ.
Max.
Unit
CPU0:3 = 66.6 MHz
Outputs Loaded
[5]
290
mA
Logic Inputs
V
IL
V
IH
I
IL
I
IH
Clock Outputs
V
OL
V
OH
I
OL
Input Low Voltage
Input High Voltage
Input Low Current
[7]
Input High Current
0.8
V
V
μA
μA
2.0
20
5
Output Low Voltage
Output High Voltage
Output Low Current
I
OL
= 1 mA
I
OH
=
–
1 mA
V
OL
= 1.5V
50
mV
V
mA
3.1
55
80
CPU0:3
SDRAM0:11,
AGP_F, AGP0
PCI_F, PCI0:4
REF
48/24MHz
CPU0:3
SDRAM0:11,
AGP_F, AGP0
PCI_F, PCI0:4
REF
48/24MHz
75
110
105
155
55
60
55
55
80
75
75
75
85
120
105
90
105
125
175
I
OH
Output High Current
V
OH
= 1.5V
mA
55
60
55
85
85
85
125
110
125
Crystal Oscillator
V
TH
C
LOAD
X1 Input Threshold Voltage
[8]
Load Capacitance, Imposed on
External Crystal
[9]
X1 Input Capacitance
[10]
1.65
20
V
pF
C
IN,X1
Notes:
5.
6.
7.
8.
9.
Pin X2 unconnected
30
pF
Multiple Supplies
: The voltage on any input or I/O pin cannot exceed the power pin during power-up. Power supply sequencing is NOT required.
All clock outputs loaded with maximum lump capacitance test load specified in AC Electrical Characteristics section.
W127/127-A logic inputs have internal pull-up devices (not full CMOS level).
X1 input threshold voltage (typical) is V
/2.
The W127/W127-A contains an internal crystal load capacitor between pin X1 and ground and another between pin X2 and ground. Total load placed on
crystal is 20 pF; this includes typical stray capacitance of short PCB traces to crystal.
10. X1 input capacitance is applicable when driving X1 with an external clock source (X2 is left unconnected).
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