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參數(shù)資料
| 型號(hào)： | DSP56F827 |
| 廠商： | 飛思卡爾半導(dǎo)體(中國)有限公司 |
| 英文描述： | 16-bit Hybrid Controller(16位混合控制器) |
| 中文描述： | 16位混合控制器（16位混合控制器） |
| 文件頁數(shù)： | 27/52頁 |
| 文件大?。?/td> | 1175K |
| 代理商： | DSP56F827 |
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External Clock Operation
56F827 Technical Data
27
This is the value load capacitance that should be used when selecting a crystal and determining the actual
frequency of operation of the crystal oscillator circuit.
Figure 11. Connecting to a Crystal Oscillator Circuit
3.6.2
It is also possible to drive the internal oscillator with a ceramic resonator, assuming the overall system
design can tolerate the reduced signal integrity. A typical ceramic resonator circuit is shown in
Figure 12
.
The resonator and components should be mounted as close as possible to the EXTAL and XTAL pins. The
internal 56F82x oscillator circuitry is designed to have no external load capacitors present. As shown in
Figure 11
, no external load capacitors should be used.
Ceramic Resonator
Figure 12. Connecting a Ceramic Resonator
Note:
Motorola recommends only two terminal ceramic resonators vs. three terminal
resonators (which contain an internal bypass capacitor to ground).
3.6.3
The recommended method of connecting an external clock is given in
Figure 13
. The external clock
source is connected to XTAL and the EXTAL pin is held V
DDA
/2.
External Clock Source
Figure 13. Connecting an External Clock Signal
Recommended External Crystal
Parameters:
R
z
= 1 to 3M
f
c
= 4MHz (optimized for 4MHz)
EXTAL XTAL
R
z
f
c
EXTAL XTAL
R
z
f
c
Recommended Ceramic Resonator
Parameters:
R
z
= 1 to 3 M
f
c
= 4MHz (optimized for 4MHz)
56F827
XTAL
EXTAL
External
Clock
V
DDA
/2
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DSP56F827/D | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:56F827 16-bit Hybrid Controller |
| DSP56F827E | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:16-bit Digital Signal Controllers |
| DSP56F827E/D | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:56F827 16-bit Hybrid Controller |
| DSP56F827EVM | 制造商:Freescale Semiconductor 功能描述:Microprocessor Support IC For Use With:5 |
| DSP56F827EVMUM | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:56F827 Evaluation Module Hardware User＇s Manual |
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