參數(shù)資料
型號： 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)： 19/52頁
文件大?。?/td> 1027K
代理商： MPC8240EC
MOTOROLA
MPC8240 Integrated Processor Hardware Specifications
For More Information On This Product,
Go to: www.freescale.com
19
Electrical and Thermal Characteristics
Figure 12 shows the PCI_HOLD_DEL effect on output valid and hold time.
Figure 12. PCI_HOLD_DEL Effect on Output Valid and Hold Time
1.4.2.5
Table 11 provides the I
2
C input AC timing specifications for the MPC8240.
Table 11. I
2
C Input AC Timing Specifications
I
2
C AC Timing Specifications
At recommended operating conditions (see Table 2) with LV
DD
= 3.3 V ± 0.3 V
Num
Characteristic
Min
Max
Unit
Notes
1
Start condition hold time
4.0
—
CLKs
1,2
2
Clock low period (the time before the MPC8240
will drive SCL low as a transmitting slave after
detecting SCL low as driven by an external
master)
8.0 + (16
×
2
FDR[4:2]
)
×
(5 –
4({FDR[5],FDR[1]} == b'10) –
3({FDR[5],FDR[1]} == b'11)–
2({FDR[5],FDR[1]} == b'00) –
1({FDR[5],FDR[1]} == b'01))
—
CLKs
1, 2, 4, 5
3
SCL/SDA rise time (from 0.5 to 2.4 V)
—
1
ms
PCI_SYNC_IN
PCI Inputs/Outputs
33 MHz PCI
OV
DD
÷ 2
OV
DD
÷ 2
12a, 6 ns for 66 MHz PCI
PCI_HOLD_DEL = 100
13a, 2 ns for 33-MHz PCI
PCI_HOLD_DEL = 110
13a, 1 ns for 66-MHz PCI
PCI_HOLD_DEL = 100
Output Valid
Output Hold
Note:
Diagram not to scale.
As PCI_HOLD_DEL
Values Decrease
As PCI_HOLD_DEL
Values Increase
PCI Inputs
and Outputs
PCI Inputs/Outputs
66 MHz PCI
12a, 8 ns for 33 MHz PCI
PCI_HOLD_DEL = 110
F
Freescale Semiconductor, Inc.
n
.
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