參數(shù)資料
型號(hào)： MPC8240EC
廠商： Motorola, Inc.
英文描述： Integrated Processor Hardware Specifications
中文描述： 綜合處理器硬件規(guī)格
文件頁數(shù)： 10/52頁
文件大?。?/td> 1027K
代理商： MPC8240EC
10
MPC8240 Integrated Processor Hardware Specifications
For More Information On This Product,
Go to: www.freescale.com
MOTOROLA
Electrical and Thermal Characteristics
1.4.1.4
Output Driver Characteristics
Table 4 provides information on the characteristics of the output drivers referenced in Table 17. The values
are from the MPC8240 IBIS model (v1.1 IBIS, v1.2 file) and are untested. For additional detailed
information, see the complete IBIS model listing at: http://www.mot.com/SPS/PowerPC/teksupport/tools/
IBIS/kahlua_1.ibs.txt
Capacitance
V
in
= 0 V, f = 1 MHz
C
in
—
7.0
pF
Notes:
1. See Table 17 for pins with internal pull-up resistors.
2. See Table 4 for the typical drive capability of a specific signal pin based on the type of output driver associated with
that pin as listed in Table 17.
3. These specifications are for the default driver strengths indicated in Table 4.
4. Leakage current is measured on input pins and on output pins in the high impedance state. The leakage current is
measured for nominal OV
DD
/LV
DD
, and V
DD
or both OV
DD
/LV
DD
and V
DD
must vary in the same direction.
5. The minimum input high voltage is not compliant with the
PCI Local Bus Specification
(Rev 2.1), which specifies
0.5
×
OV
DD
for minimum input high voltage.
Table 4. Drive Capability of MPC8240 Output Pins
Driver Type
Programmable
Output
Impedance (
)
Supply
Voltage
I
OH
I
OL
Unit
Notes
DRV_STD
20
OV
DD
= 3.3 V
36.7
30.0
mA
2, 4
40 (default)
OV
DD
= 3.3 V
18.7
15.0
mA
2, 4
DRV_PCI
25
OV
DD
= 3.3 V
11.0
20.6
mA
1, 3
50 (default)
OV
DD
= 3.3 V
5.6
10.3
mA
1, 3
DRV_MEM_ADDR
DRV_PCI_CLK
8 (default)
GV
DD
= 3.3 V
89.0
76.3
mA
2, 4
13.3
GV
DD
= 3.3 V
55.9
46.4
mA
2, 4
20
GV
DD
= 3.3 V
36.7
30.0
mA
2, 4
40
GV
DD
= 3.3 V
18.7
15.0
mA
2, 4
DRV_MEM_DATA
20 (default)
GV
DD
= 3.3 V
36.7
30.0
mA
2, 4
40
GV
DD
= 3.3 V
18.7
15.0
mA
2, 4
Notes:
1. For DRV_PCI, I
OH
read from the IBIS listing in the pull-up mode, I(Min) column, at the 0.33-V label by interpolating
between the 0.3- and 0.4-V table entries’ current values that correspond to the PCI V
OH
= 2.97 = 0.9
×
OV
DD
(OV
DD
= 3.3 V) where table entry voltage = OV
DD
– PCI V
OH
.
2. For all others with GV
DD
or OV
DD
= 3.3 V, I
OH
read from the IBIS listing in the pull-up mode, I(Min) column, at the
0.9-V table entry thatcorresponds to the V
OH
= 2.4 V where table entry voltage = GV
DD
/OV
DD
– V
OH
.
3. For DRV_PCI, I
OL
read from the IBIS listing in the pull-down mode, I(Min) column, at 0.33 V = PCI V
OL
= 0.1
×
OV
DD
(OV
DD
= 3.3 V) by interpolating between the 0.3- and 0.4-V table entries.
Table 3. DC Electrical Specifications (continued)
At recommended operating conditions (see Table 2)
Characteristic
Condition
3
Symbol
Min
Max
Unit
F
Freescale Semiconductor, Inc.
n
.
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