- 您現在的位置：買賣IC網 > PDF目錄377001 > DSP56F801FA60E (飛思卡爾半導體(中國)有限公司) 16-bit Digital Signal Controllers PDF資料下載
參數資料
| 型號： | DSP56F801FA60E |
| 廠商： | 飛思卡爾半導體(中國)有限公司 |
| 英文描述： | 16-bit Digital Signal Controllers |
| 中文描述： | 16位數字信號控制器 |
| 文件頁數： | 23/48頁 |
| 文件大?。?/td> | 375K |
| 代理商： | DSP56F801FA60E |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁當前第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁
External Clock Operation
56F801 Technical Data, Rev. 16
Freescale Semiconductor
23
Figure 3-6 Flash Mass Erase Cycle
3.5 External Clock Operation
The 56F801 device clock is derived from either 1) an internal crystal oscillator circuit working in
conjunction with an external crystal, 2) an external frequency source, or 3) an on-chip relaxation oscillator.
To generate a reference frequency using the internal crystal oscillator circuit, a reference crystal external
to the chip must be connected between the EXTAL and XTAL pins. Paragraphs
3.5.1
and
3.5.4
describe
these methods of clocking. Whichever type of clock derivation is used provides a reference signal to a
phase-locked loop (PLL) within the 56F801. In turn, the PLL generates a master reference frequency that
determines the speed at which chip operations occur.
Application code can be set to change the frequency source between the relaxation oscillator and crystal
oscillator or external source, and power down the relaxation oscillator if desired. Selection of which clock
is used is determined by setting the PRECS bit in the PLLCR (phase-locked loop control register) word
(bit 2). If the bit is set to 1, the external crystal oscillator circuit is selected. If the bit is set to 0, the internal
relaxation oscillator is selected, and this is the default value of the bit when power is first applied.
3.5.1
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 3-10
.
Figure 3-7
shows a recommended crystal
oscillator circuit. Follow the crystal supplier’s recommendations when selecting a crystal, since 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
Crystal Oscillator
XADR
YE=SE=OE=0
ERASE
NVSTR
Tnvs
Tnvh1
Trcv
Tme
MAS1
IFREN
XE
相關PDF資料 |
PDF描述 |
|---|---|
| DSP56F801FA80E | 16-bit Digital Signal Controllers |
| DSP56F801 | 16-bit Hybrid Controller(16位混合控制器) |
| DSP56F803E | 16-bit Digital Signal Controllers |
| DSP56F805E | 16-bit Digital Signal Controllers |
| DSP56F805FV80E | 16-bit Digital Signal Controllers |
相關代理商/技術參數 |
參數描述 |
|---|---|
| DSP56F801FA60E | 制造商:Freescale Semiconductor 功能描述:Digital Signal Processor IC DSP Type:Pro |
| DSP56F801FA60E | 制造商:Freescale Semiconductor 功能描述:DIGITAL SIGNAL PROCESSORLQFP3.6V |
| DSP56F801FA80 | 功能描述:數字信號處理器和控制器 - DSP, DSC 80Mhz/ 40MIPS RoHS:否 制造商:Microchip Technology 核心:dsPIC 數據總線寬度:16 bit 程序存儲器大小:16 KB 數據 RAM 大小:2 KB 最大時鐘頻率:40 MHz 可編程輸入/輸出端數量:35 定時器數量:3 設備每秒兆指令數:50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風格:SMD/SMT |
| DSP56F801FA80E | 功能描述:數字信號處理器和控制器 - DSP, DSC 16 BIT HYBRID CONTROLLER RoHS:否 制造商:Microchip Technology 核心:dsPIC 數據總線寬度:16 bit 程序存儲器大小:16 KB 數據 RAM 大小:2 KB 最大時鐘頻率:40 MHz 可編程輸入/輸出端數量:35 定時器數量:3 設備每秒兆指令數:50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風格:SMD/SMT |
| DSP56F801FA80E | 制造商:Freescale Semiconductor 功能描述:IC |
發(fā)布緊急采購，3分鐘左右您將得到回復。