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參數(shù)資料
| 型號(hào)： | DSP56F807VF80E |
| 廠商： | 飛思卡爾半導(dǎo)體(中國)有限公司 |
| 英文描述： | 16-bit Digital Signal Controllers |
| 中文描述： | 16位數(shù)字信號(hào)控制器 |
| 文件頁數(shù)： | 30/60頁 |
| 文件大?。?/td> | 522K |
| 代理商： | DSP56F807VF80E |
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56F807 Technical Data Technical Data, Rev. 15
30
Freescale Semiconductor
as a typical circuit board trace capacitance the parallel load capacitance presented to the crystal is 9pF as
determined by the following equation:
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 3-7 Connecting to a Crystal Oscillator
3.4.2
It is also possible to drive the internal oscillator with a ceramic resonator, assuming the overall system
design can tolerate the reduced signal integrity. In
Figure 3-8
, a typical ceramic resonator circuit is
shown. Refer to supplier’s recommendations when selecting a ceramic resonator and associated
components. The resonator and components should be mounted as close as possible to the EXTAL and
XTAL pins. The internal 56F80x oscillator circuitry is designed to have no external load capacitors
present. As shown in
Figure 3-7
no external load capacitors should be used.
Ceramic Resonator
Figure 3-8 Connecting a Ceramic Resonator
Note:
Freescale recommends only two terminal ceramic resonators vs. three terminal resonators
(which contain an internal bypass capacitor to ground).
CL =
CL1 * CL2
CL1 + CL2
+ Cs =
+ 3 = 6 + 3 = 9pF
12 * 12
12 + 12
Recommended External Crystal
Parameters:
R
z
= 1 to 3 M
Ω
f
c
= 8MHz (optimized for 8MHz)
EXTAL XTAL
R
z
f
c
Recommended Ceramic Resonator
Parameters:
R
z
= 1 to 3 M
Ω
f
c
= 8MHz (optimized for 8MHz)
EXTAL XTAL
R
z
f
c
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DSP56F807 | 16-bit Hybrid Controller(16位混合控制器) |
| DSP56F826BU80 | 16-bit Digital Signal Controllers |
| DSP56F826BU80E | 16-bit Digital Signal Controllers |
| DSP56F826E | 16-bit Digital Signal Controllers |
| DSP56F826 | 16-bit Hybrid Controller(16位混合控制器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DSP56F807VF80E | 制造商:Freescale Semiconductor 功能描述:Digital Signal Processor IC |
| DSP56F807VF80J | 制造商:Freescale Semiconductor 功能描述:DSP 16BIT - Trays |
| DSP56F826 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:16-bit Digital Signal Controllers |
| DSP56F826-827UM | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:16-Bit Digital Signal Processor Users Manual |
| DSP56F826-827UM/D | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:56F827 16-bit Hybrid Controller |
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