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    EM78P259NSO14J 参数 Datasheet PDF下载

    EM78P259NSO14J图片预览
    型号： EM78P259NSO14J
    PDF下载： 下载PDF文件 查看货源
    内容描述： [EM78Q153SN EM78P153SP EM78P153SN EM78156EH EM78156EP EM78156EM EM78156EKM EM78Q156ELP EM78Q156ELM EM78Q156ELKM EM78P156ELP EM78P156ELM EM78P156ELKM EM78P156NP EM78P156NM EM78447SH EM78447SAP EM78447SAM EM78447SAS EM78447SBP EM78447SBWM EM78Q447SH EM78Q447SAP EM78Q447SAM EM78Q447SBP EM78Q447SBWM EM78P447SAP EM78P447SAM EM78P447SAS EM78P447SBP EM78P447SBWM EM78Q257 EM78Q257AP EM78Q257AM EM78Q257BP EM78Q257BM EM78P257AP EM78P257AM EM78P257BP EM78P257BM EM78451H EM78451P EM78451AQ EM]
    分类和应用：
    文件页数/大小： 81 页 / 2574 K
    品牌： ELAN [ ELAN MICROELECTRONICS CORP ]
     浏览型号EM78P259NSO14J的Datasheet PDF文件第58页浏览型号EM78P259NSO14J的Datasheet PDF文件第59页浏览型号EM78P259NSO14J的Datasheet PDF文件第60页浏览型号EM78P259NSO14J的Datasheet PDF文件第61页浏览型号EM78P259NSO14J的Datasheet PDF文件第63页浏览型号EM78P259NSO14J的Datasheet PDF文件第64页浏览型号EM78P259NSO14J的Datasheet PDF文件第65页浏览型号EM78P259NSO14J的Datasheet PDF文件第66页  
    EM78P258N  
    8-Bit Microprocessor with OTP ROM  
    The Oscillator modes defined by OSC2, OCS1, and OSC0 are described below.  
    Oscillator Modes OSC2 OSC1 OSC0  
    ERC1 (External RC oscillator mode); P70/OSCO acts as P70  
    ERC1 (External RC oscillator mode); P70/OSCO acts as OSCO  
    IRC2 (Internal RC oscillator mode); P70/OSCO acts as P70  
    IRC2 (Internal RC oscillator mode); P70/OSCO acts as OSCO  
    LXT3 (Low XTAL oscillator mode)  
    0
    0
    0
    0
    1
    1
    0
    0
    1
    1
    1
    1
    0
    1
    0
    1
    0
    1
    HXT3 High XTAL oscillator mode) (default)  
    1 Under ERC mode, OSCI is used as oscillator pin. OSCO/P70 is defined by code  
    option WORD0 Bit6 ~ Bit4.  
    2 Under IRC mode, P55 is normal I/O pin. OSCO/P70 is defined by code  
    option WORD0 Bit6 ~ Bit4.  
    3 Under LXT and HXT modes; OSCI and OSCO are used as oscillator pins. These  
    pins and cannot and should not be defined as normal I/O pins.  
    NOTE  
    The transient point of system frequency between HXT and LXY is around 400 KHz.  
    The maximum operating frequency limit of crystal/resonator at different VDDs, are as  
    follows:  
    Conditions  
    VDD  
    2.3  
    Max. Freq. (MHz)  
    4
    8
    Two clocks  
    3.0  
    5.0  
    20  
    6.10.2 Crystal Oscillator/Ceramic Resonators (XTAL)  
    EM78P258N can be driven by an external clock signal through the OSCI pin as  
    illustrated below.  
    OSCI  
    EM78P258N  
    OSCO  
    Fig. 6-13 External Clock Input Circuit  
    56 •  
    Product Specification (V1.0) 06.16.2005  
    (This specification is subject to change without further notice)  

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