参数资料
型号: MPC8270VRMIBA
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 32-BIT, 66.67 MHz, RISC PROCESSOR, PBGA516
封装: 27 X 27 MM, 1 MM PITCH, LEAD FREE, PLASTIC, FBGA-516
文件页数: 68/156页
文件大小: 1680K
代理商: MPC8270VRMIBA
MOTOROLA
MPC8280 PowerQUICC II Family Hardware Specications
19
AC Electrical Characteristics
6.2
SIU AC Characteristics
NOTE: CLKIN Jitter and Duty Cycle
The CLKIN input to the MPC8280 should not exceed +/– 150 psec. This
represents total input jitter—the combination of short term (peak-to-peak)
and long term (cumulative). The duty cycle of CLKIN should not exceed
the ratio of 40:60.
NOTE: PCI AC Timing
The MPC8280 meets the timing requirements of PCI Specication
Revision 2.2. Refer to Sections 7.2 and 7.3 and “Note: Tval (Output Hold)”
to determine if a specic clock conguration is compliant.
Table 11 lists SIU input characteristics.
Table 11. AC Characteristics for SIU Inputs1
1 Input specications are measured from the 50% level of the signal to the 50% level of the rising edge of CLKIN.Timings
are measured at the pin.
Spec Number
Characteristic
Value (ns)
Setup
Hold
Setup
Hold
66 MHz
83 MHz 100 MHz 66 MHz
83 MHz 100 MHz
sp11
sp10 AACK/TA/TS/DBG/BG/BR
6
5
3.5
0.5
sp11a
sp10 ARTRY/ TEA
6
5
4
0.5
sp12
sp10 Data bus in normal mode
5
4
3.5
0.5
sp13
sp10 Data bus in ECC and PARITY modes
7
5
3.5
0.5
sp13a
sp10 Pipeline mode—
Data bus in ECC and PARITY modes
5
4
2.5
0.5
sp14
sp10 DP pins
7
5
3.5
0.5
sp14a
sp10 Pipeline mode—DP pins
4
2.5
0.5
sp15
sp10 All other pins
5
4
3.5
0.5
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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