參數(shù)資料
    型號: T89C51RD2-RDFC-L
    廠商: Atmel Corp.
    英文描述: 0 to 40MHz Flash Programmable 8-bit Microcontroller
    中文描述: 0至40MHz可編程閃存8位微控制器
    文件頁數(shù): 95/170頁
    文件大小: 1927K
    代理商: T89C51RD2-RDFC-L
    95
    A/T89C51CC01
    4129L–CAN–08/05
    Time Trigger
    Communication (TTC)
    and Message Stamping
    The T89C51CC01 has a programmable 16-bit Timer (CANTIMH and CANTIML) for
    message stamp and TTC.
    This CAN Timer starts after the CAN controller is enabled by the ENA bit in the CANG-
    CON register.
    Two modes in the timer are implemented:
    Time Trigger Communication:
    Capture of this timer value in the CANTTCH and CANTTCL registers on
    Start Of Frame (SOF) or End Of Frame (EOF), depending on the SYNCTTC
    bit in the CANGCON register, when the network is configured in TTC by the
    TTC bit in the CANGCON register.
    Note:
    In this mode, CAN
    only sends the frame once, even if an error occurs
    .
    Message Stamping
    Capture of this timer value in the CANSTMPH and CANSTMPL registers of
    the message object which received or sent the frame.
    All messages can be stamps.
    The stamping of a received frame occurs when the RxOk flag is set.
    The stamping of a sent frame occurs when the TxOk flag is set.
    The CAN Timer works in a roll-over from FFFFh to 0000h which serves as a time base.
    When the timer roll-over from FFFFh to 0000h, an interrupt is generated if the ETIM bit
    in the interrupt enable register IEN1 is set.
    Figure 51.
    Block Diagram of CAN Timer
    EOF on CAN frame
    ENA
    CANGCON.1
    CANTCON
    RXOK i
    CANSTCH.5
    TXOK i
    CANSTCH.4
    ÷
    6
    Fcan
    CLOCK
    SOF on CAN frame
    TTC
    CANGCON.5
    SYNCTTC
    CANGCON.4
    CANTTCH and CANTTCL
    CANSTMPH and CANSTMPL
    CANTIMH and CANTIML
    OVRTIM
    CANGIT.5
    When 0xFFFF to 0x0000
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    相關(guān)代理商/技術(shù)參數(shù)
    參數(shù)描述
    T89C51RD2-RDFC-M 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:0 to 40MHz Flash Programmable 8-bit Microcontroller
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