參數(shù)資料
型號: MC56F8347MPY60
廠商: MOTOROLA INC
元件分類: 數(shù)字信號處理
英文描述: 16-BIT, 120 MHz, OTHER DSP, PQFP160
封裝: LQFP-160
文件頁數(shù): 88/160頁
文件大小: 2217K
代理商: MC56F8347MPY60
External Clock Operation
568347 Technical Data
33
Preliminary
Figure 3-2 Connecting to a Crystal Oscillator
Note:
The OCCS_COHL bit must be set to 1 when a crystal oscillator is used. The reset condition on
the OCCS_COHL bit is 0. Please see the COHL bit in the Oscillator Control (OSCTL)
register, discussed in the 56F8300 Peripheral User’s Manual.
3.2.2
Ceramic Resonator (Default)
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 3-3. Refer to the supplier’s recommendations when selecting a ceramic resonator and
associated components. The resonator and components should be mounted as near as possible to
the EXTAL and XTAL pins.
Figure 3-3 Connecting a Ceramic Resonator
Note:
The OCCS_COHL bit must be set to 0 when a ceramic resonator is used. The reset condition
on the OCCS_COHL bit is 0. Please see the COHL bit in the Oscillator Control (OSCTL)
register, discussed in the 56F8300 Peripheral User’s Manual.
Sample External Crystal Parameters:
Rz = 750 K
Note: If the operating temperature range is limited to
below 85oC (105oC junction), then Rz = 10 Meg
CLKMODE = 0
EXTAL XTAL
Rz
CL1
CL2
Crystal Frequency = 4 - 8MHz (optimized for 8MHz)
EXTAL XTAL
Rz
EXTAL
XTAL
Rz
Sample External Ceramic Resonator Parameters:
Rz = 750 K
EXTAL
XTAL
Rz
C1
CL1
CL2
C2
Resonator Frequency = 4 - 8MHz (optimized for 8MHz)
3 Terminal
2 Terminal
CLKMODE = 0
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相關(guān)代理商/技術(shù)參數(shù)
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MC56F8347VPY 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:16-BIT HYBRID CONTROLLERS
MC56F8347VPY60 制造商:Freescale Semiconductor 功能描述:
MC56F8347VPYE 功能描述:數(shù)字信號處理器和控制器 - DSP, DSC 16 BIT HYBRID CNTRLR 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(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
MC56F8347VVF 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:16-bit Digital Signal Controllers