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參數(shù)資料
| 型號： | MAC7101CPV50 |
| 廠商： | MOTOROLA INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 32-BIT, FLASH, 50 MHz, RISC MICROCONTROLLER, PQFP144 |
| 封裝： | 20 X 20 MM, 0.50 MM PITCH, LQFP-144 |
| 文件頁數(shù)： | 8/48頁 |
| 文件大?。?/td> | 1282K |
| 代理商： | MAC7101CPV50 |
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16
MAC7100 Microcontroller Family Hardware Specifications
MOTOROLA
PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE
Electrical Characteristics
3.8.2.1
Jitter Information
The basic functionality of the PLL is shown in Figure 3. With each transition of the clock fcmp, the deviation
from the reference clock fref is measured and input voltage to the VCO is adjusted 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 4. It is important to note that the pre-scaler used
by timers and serial modules will eliminate the effect of PLL jitter to a large extent.
Figure 4. Jitter Definitions
The relative deviation of tNOM is at its maximum for one clock period, and decreases towards zero for larger
number of clock periods (N). Thus, jitter is defined as:
For N
< 100, the following equation is a good fit for the maximum jitter:
Figure 5. Maximum Bus Clock Jitter Approximation
0
tMIN1
12
3
N–1
N
tNOM
tMAX1
tMIN(N)
tMAX(N)
JN
()
max 1
tMAX N
()
NtNOM
---------------------
–1
tMIN N
()
NtNOM
---------------------
–
,
=
JN
()
j1
N
-------- j2
+
=
01
5
10
20
15
N
J(N)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAC7101CVF | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:MAC7100 Microcontroller Family Hardware Specifications |
| MAC7101CVF50 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontroller Family Hardware Specifications |
| MAC7101CVM50 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontroller Family Hardware Specifications |
| MAC7101MAF50 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontroller Family Hardware Specifications |
| MAC7101MAG40 | 功能描述:ARM微控制器 - MCU MAC7101 NO BUS 32CH A/D RoHS:否 制造商:STMicroelectronics 核心:ARM Cortex M4F 處理器系列:STM32F373xx 數(shù)據(jù)總線寬度:32 bit 最大時鐘頻率:72 MHz 程序存儲器大小:256 KB 數(shù)據(jù) RAM 大小:32 KB 片上 ADC:Yes 工作電源電壓:1.65 V to 3.6 V, 2 V to 3.6 V, 2.2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:LQFP-48 安裝風(fēng)格:SMD/SMT |
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