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| 型号： | DSP56F801FA60E |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 17/48页 |
| 文件大小： | 0K |
| 描述： | IC DSP 60MHZ 16KB FLASH 48-LQFP |
| 标准包装： | 250 |
| 系列： | 56F8xx |
| 核心处理器： | 56800 |
| 芯体尺寸： | 16-位 |
| 速度： | 60MHz |
| 连通性： | SCI，SPI |
| 外围设备： | POR，PWM，WDT |
| 输入/输出数： | 11 |
| 程序存储器容量： | 20KB（10K x 16） |
| 程序存储器类型： | 闪存 |
| RAM 容量： | 2K x 16 |
| 电压 - 电源 (Vcc/Vdd)： | 3 V ~ 3.6 V |
| 数据转换器： | A/D 8x12b |
| 振荡器型： | 内部 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 48-LQFP |
| 包装： | 托盘 |
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56F801 Technical Data, Rev. 17
24
Freescale Semiconductor
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
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 External Crystal Oscillator Circuit
3.5.2
Ceramic Resonator
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.
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:
Rz = 1 to 3 MΩ
fc = 8MHz (optimized for 8MHz)
EXTAL XTAL
Rz
fc
Recommended Ceramic Resonator
Parameters:
Rz = 1 to 3 MΩ
fc = 8MHz (optimized for 8MHz)
EXTAL XTAL
Rz
fc
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 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:数字信号处理器和控制器 - DSP, DSC 80Mhz/ 40MIPS RoHS:否 制造商:Microchip Technology 核心:dsPIC 数据总线宽度:16 bit 程序存储器大小:16 KB 数据 RAM 大小:2 KB 最大时钟频率:40 MHz 可编程输入/输出端数量:35 定时器数量:3 设备每秒兆指令数:50 MIPs 工作电源电压:3.3 V 最大工作温度:+ 85 C 封装 / 箱体:TQFP-44 安装风格:SMD/SMT |
| DSP56F801FA80E | 功能描述:数字信号处理器和控制器 - DSP, DSC 16 BIT HYBRID CONTROLLER RoHS:否 制造商:Microchip Technology 核心:dsPIC 数据总线宽度:16 bit 程序存储器大小:16 KB 数据 RAM 大小:2 KB 最大时钟频率:40 MHz 可编程输入/输出端数量:35 定时器数量:3 设备每秒兆指令数:50 MIPs 工作电源电压:3.3 V 最大工作温度:+ 85 C 封装 / 箱体:TQFP-44 安装风格:SMD/SMT |
| DSP56F801FA80E | 制造商:Freescale Semiconductor 功能描述:IC |
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