參數(shù)資料
型號(hào)： MC56F8245MLD
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 16-BIT, FLASH, 60 MHz, MICROCONTROLLER, PQFP44
封裝： 10 X 10 MM, 1.40 MM HEIGHT, 0.80 MM PITCH, ROHS COMPLIANT, PLASTIC, MS-026BCB, LQFP-44
文件頁(yè)數(shù)： 32/88頁(yè)
文件大小： 4050K
代理商： MC56F8245MLD
MC56F825x/MC56F824x Digital Signal Controller, Rev. 3
General System Control Information
Freescale Semiconductor
38
when selecting a crystal, because crystal parameters determine the component values required to provide maximum stability
and reliable startup. The load capacitance values used in the oscillator circuit design should include all stray layout capacitances.
The crystal and associated components should be mounted as near as possible to the EXTAL and XTAL pins to minimize output
distortion and startup stabilization time. When using low-frequency, low-power mode, the only external component is the
crystal itself. In the other oscillator modes, load capacitors (Cx, Cy) and feedback resistor (RF) are required. In addition, a series
resistor (RS) may be used in high-gain modes. Recommended component values appear in Table 27.
Figure 9. Typical Crystal Oscillator Circuit without Frequency Compensation Capacitor
Figure 10. Typical Crystal or Ceramic Resonator Circuit
5.4.3
Alternate External Clock Input
The recommended method of connecting an external clock appears in Figure 11. The external clock source is connected to the
CLKIN pin while:
both the EXT_SEL bit and the CLK_MODE bit in the OSCTL register are set, and
corresponding bits in the GPIOB_PER register in the GPIO module and the GPS_C0 bit in the GPS0 register in the
system integration module (SIM) are set to the correct values.
The external clock input must be generated using a relatively low-impedance driver with a maximum frequency not greater than
120 MHz.
EXTAL
XTAL
MC56F825x/MC56F824x
Crystal Frequency = 4–16 MHz
OSC_DIV2 = 1 if 16 MHz is chosen
RF
EXTAL
XTAL
C1
C2
MC56F825x/MC56F824x
Crystal Frequency = 4–16 MHz
OSC_DIV2 = 1 if 16 MHz is chosen
相關(guān)PDF資料
PDF描述
MC56F8322MFAE 0-BIT, 120 MHz, OTHER DSP, PQFP48
MC56F8322VFAE 0-BIT, 120 MHz, OTHER DSP, PQFP48
MC56F8347VPY60 16-BIT, 120 MHz, OTHER DSP, PQFP160
MC56F8347MPY60 16-BIT, 120 MHz, OTHER DSP, PQFP160
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC56F8245VLD 功能描述:數(shù)字信號(hào)處理器和控制器 - DSP, DSC DSC 44 LQFP 48K FL RoHS:否 制造商:Microchip Technology 核心:dsPIC 數(shù)據(jù)總線寬度:16 bit 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:2 KB 最大時(shí)鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時(shí)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
MC56F8246 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Digital Signal Controller Battery chargers and management
MC56F8246MLF 功能描述:數(shù)字信號(hào)處理器和控制器 - DSP, DSC DSC 48 LQFP 48K FL RoHS:否 制造商:Microchip Technology 核心:dsPIC 數(shù)據(jù)總線寬度:16 bit 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:2 KB 最大時(shí)鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時(shí)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
MC56F8246VLF 功能描述:數(shù)字信號(hào)處理器和控制器 - DSP, DSC DSC 48 LQFP 48K FL RoHS:否 制造商:Microchip Technology 核心:dsPIC 數(shù)據(jù)總線寬度:16 bit 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:2 KB 最大時(shí)鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時(shí)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
MC56F8247 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Digital Signal Controller Battery chargers and management
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