MC9S12E32CFU FREESCALE [Freescale Semiconductor, Inc], MC9S12E32CFU Datasheet - Page 579
MC9S12E32CFU
Manufacturer Part Number
MC9S12E32CFU
Description
HCS12 Microcontrollers
Manufacturer
FREESCALE [Freescale Semiconductor, Inc]
Datasheet
1.MC9S12E32CFU.pdf
(606 pages)
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J N
The relative deviation of t
number of clock periods (N).
Defining the jitter as:
For N < 100, the following equation is a good fit for the maximum jitter:
This is very important to notice with respect to timers, serial modules where a pre-scaler will eliminate the
effect of the jitter to a large extent.
Freescale Semiconductor
J N
=
=
0
------- -
max 1
j
1
N
t
+
min1
t
nom
t
j
max1
2
J(N)
–
t
-------------------- -
N t
max
1
nom
1
nom
is at its maximum for one clock period, and decreases towards zero for larger
N
5
,
MC9S12E128 Data Sheet, Rev. 1.07
1
Figure A-3. Jitter Definitions
–
2
-------------------- -
N t
t
10
min
nom
N
t
minN
t
maxN
3
20
Appendix A Electrical Characteristics
N-1
N
N
579
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