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參數(shù)資料
| 型號： | DSP56F805FV80E |
| 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)字信號控制器 |
| 文件頁數(shù)： | 28/56頁 |
| 文件大?。?/td> | 415K |
| 代理商： | DSP56F805FV80E |
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56F805
Technical Data, Rev. 15
28
Freescale Semiconductor
Figure 3-6 Flash Mass Erase Cycle
3.5 External Clock Operation
The 56F805 system clock can be derived from a crystal or an external system clock signal. To generate a
reference frequency using the internal oscillator, a reference crystal must be connected between the
EXTAL and XTAL pins.
3.5.1
Crystal Oscillator
The internal oscillator is also designed to interface with a parallel-resonant crystal resonator in the
frequency range specified for the external crystal in
Table 3-9
. In
Figure 3-7
a recommended crystal
oscillator circuit is shown. Follow the crystal supplier’s recommendations when selecting a crystal,
because crystal parameters determine the component values required to provide maximum stability and
reliable start-up. The crystal and associated components should be mounted as close as possible to the
EXTAL and XTAL pins to minimize output distortion and start-up stabilization time. The internal 56F80x
oscillator circuitry is designed to have no external load capacitors present. As shown in
Figure 3-8
, no
external load capacitors should be used.
The 56F80x components internally are modeled as a parallel resonant oscillator circuit to provide a
capacitive load on each of the oscillator pins (XTAL and EXTAL) of 10pF to 13pF over temperature and
process variations. Using a typical value of internal capacitance on these pins of 12pF and a value of 3pF
XADR
YE=SE=OE=0
ERASE
NVSTR
Tnvs
Tnvh1
Trcv
Tme
MAS1
IFREN
XE
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DSP56F805FV80E | 制造商:Freescale Semiconductor 功能描述:Digital Signal Processor IC DSP Type:Cor |
| DSP56F805FV80E | 制造商:Freescale Semiconductor 功能描述:DSP LQFP144 3.6V |
| DSP56F805PB | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:56F805 16-Bit Hybrid Controller Product Brief |
| DSP56F807 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:56F807 16-bit Hybrid Processor |
| DSP56F807EVM | 功能描述:開發(fā)板和工具包 - 其他處理器 Evaluation Kit For DSP56F807 RoHS:否 制造商:Freescale Semiconductor 產(chǎn)品:Development Systems 工具用于評估:P3041 核心:e500mc 接口類型:I2C, SPI, USB 工作電源電壓: |
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