MPC9449 查看數據表（PDF） - Motorola => Freescale
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MPC9449 Datasheet PDF : 12 Pages
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MPC9449
Freescale Semiconductor, Inc.
B VCC
VCC 2
GND
B VCC
VCC 2
GND
tSK(O)
The pin–to–pin skew is defined as the worst case difference in prop-
agation delay between any similar delay path within a single device
Figure 8. Output–to–output Skew tSK(O)
CCLK
QX
t(LH)
t(HL)
B VCC
VCC 2
GND
B VCC
VCC 2
GND
Figure 9. Propagation delay (tPD) test reference
PCLK
PCLK
QX
VPP
t(LH)
t(HL)
VCMR
B VCC
VCC 2
GND
Figure 10. Propagation delay (tPD) test reference
CCLK
QX
t(LH)
t(HL)
B VCC
VCC 2
GND
B VCC
VCC 2
GND
tSK(P) = | tPLH – tPHL |
Figure 11. Output Pulse Skew tSK(P) test reference
VCC=3.3V VCC=2.5V
2.4
1.8V
0.55
0.6V
tF
tR
Figure 12. Output Transition Time Test Reference
TN TN+1
TJIT(CC) = |TN–TN+1|
The variation in cycle time of a signal between adjacent cycles, over a
random sample of adjacent cycle pairs
Figure 13. Cycle–to–cycle Jitter
MOTOROLA
For More Informa8tion On This Product,
Go to: www.freescale.com
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