參數(shù)資料
型號： DSP56F826BU80
廠商： Freescale Semiconductor
文件頁數(shù)： 22/56頁
文件大?。?/td> 0K
描述： IC DSP 80MHZ 64KB FLASH 100LQFP
標(biāo)準(zhǔn)包裝： 90
系列： 56F8xx
核心處理器： 56800
芯體尺寸： 16-位
速度： 80MHz
連通性： EBI/EMI，SCI，SPI，SSI
外圍設(shè)備： POR，WDT
輸入/輸出數(shù)： 46
程序存儲器容量： 67KB（33.5K x 16）
程序存儲器類型： 閃存
RAM 容量： 4.5K x 16
電壓 - 電源 (Vcc/Vdd)： 2.25 V ~ 2.75 V
振蕩器型： 外部
工作溫度： -40°C ~ 85°C
封裝/外殼： 100-LQFP
包裝： 托盤
External Clock Operation
56F826 Technical Data, Rev. 14
Freescale Semiconductor
29
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 3-9 Connecting to a Crystal Oscillator Circuit
3.6.2
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. A typical ceramic resonator circuit is shown in
Figure 3-10. 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 56F82x oscillator circuitry is designed to have no external load capacitors
present. As shown in Figure 3-10, no external load capacitors should be used.
Figure 3-10 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 3MΩ
fc = 4Mhz (optimized for 4MHz)
EXTAL XTAL
Rz
fc
Recommended Ceramic Resonator
Parameters:
Rz = 1 to 3 MΩ
fc = 4Mhz (optimized for 4MHz)
EXTAL XTAL
Rz
fc
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參數(shù)描述
DSP56F826BU80E 功能描述:數(shù)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(shù)據(jù)總線寬度:16 bit 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:2 KB 最大時鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時器數(shù)量:3 設(shè)備每秒兆指令數(shù):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(fēng)格:SMD/SMT
DSP56F826BU80E 制造商:Freescale Semiconductor 功能描述:Digital Signal Processor IC DSP Type:Cor
DSP56F826BU80E 制造商:Freescale Semiconductor 功能描述:DSP LQFP100 3.6V
DSP56F826D 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:Preliminary Technical Data DSP56F826 16-bit Digital Signal Processor
DSP56F826E 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:16-bit Digital Signal Controllers
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