參數(shù)資料
型號: ST10R172LT6
廠商: STMICROELECTRONICS
元件分類: 微控制器/微處理器
英文描述: 16-BIT, 50 MHz, MICROCONTROLLER, PQFP100
封裝: 14 X 14 MM, TQFP-100
文件頁數(shù): 36/68頁
文件大小: 657K
代理商: ST10R172LT6
41/68
ST10R172L - ELECTRICAL CHARACTERISTICS
where
N = number of consecutive TCLs and 1
≤ N ≤ 40. So for a period of 3 TCLs (i.e. N = 3):
and
PLL jitter is an important factor for bus cycles using waitstates and for the operation of timers,
serial interfaces, etc. For slower operations and longer periods (e.g. pulse train generation or
measurement, lower baudrates, etc.) the deviation caused by the PLL jitter is negligible.
Figure 12 Approximated maximum PLL jitter
D
3
43 15
=
3,8%
=
3TCL
min
3TCL
NOM
1
3,8 100
()
×
=
3TCL
NOM
0,962 36.07nsec @fcpu=50MHz
()
×
=
32
16
8
4
2
±1
±2
±3
±4
Max.jitter [%]
N
This formula is valid for 1<N<40 and 10<fcpu<50
1
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