參數(shù)資料
型號: 9S12E128DGV1
廠商: Motorola, Inc.
英文描述: MC9S12E-Family Device User Guide V01.04
中文描述: MC9S12E -系列設(shè)備的用戶手冊V01.04
文件頁數(shù): 126/156頁
文件大?。?/td> 3077K
代理商: 9S12E128DGV1
Device User Guide — 9S12E128DGV1/D V01.04
126
accordingly.The adjustment is done continuously with no abrupt changes in the clock output frequency.
Noise, voltage, temperature and other factors cause slight variations in the control loop resulting in a clock
jitter. This jitter affects the real minimum and maximum clock periods as illustrated in
Figure B-3
.
Figure B-3 Jitter Definitions
The relative deviation of t
nom
is at its maximum for one clock period, and decreases towards zero for larger
number of clock periods (N).
Defining the jitter as:
For N < 100, the following equation is a good fit for the maximum jitter:
2
3
N-1
N
1
0
t
nom
t
max1
t
min1
t
maxN
t
minN
J N
max 1
t
N
N t
nom
---------------------
1
t
N
N t
nom
--------------------
,
=
J N
j
N
-------
j
2
+
=
F
For More Information On This Product,
Go to: www.freescale.com
n
.
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