• 參數(shù)資料
    型號: PSD835F3V-A-15B81I
    廠商: 意法半導(dǎo)體
    英文描述: Configurable Memory System on a Chip for 8-Bit Microcontrollers
    中文描述: 在8片位微控制器可配置存儲系統(tǒng)
    文件頁數(shù): 59/110頁
    文件大?。?/td> 570K
    代理商: PSD835F3V-A-15B81I
    PSD8XX Family
    PSD835G2
    58
    The
    PSD835G2
    Functional
    Blocks
    (cont.)
    9.4.3.1 Control Register
    Any bit set to ‘0’ in the Control Register sets the corresponding Port pin to MCU I/O Mode,
    and a ‘1’ sets it to Address Out Mode. The default mode is MCU I/O. Only Ports E, F and
    G have an associated Control Register.
    9.4.3.2 Direction Register
    The Direction Register controls the direction of data flow in the I/O Ports. Any bit set to ‘1’
    in the Direction Register will cause the corresponding pin to be an output, and any bit set
    to ‘0’ will cause it to be an input. The default mode for all port pins is input.
    Figures 26 and 28 show the Port Architecture diagrams for Ports A/B/C and E/F/G
    respectively. The direction of data flow for Ports A, B, C and F are controlled not only by
    the direction register, but also by the output enable product term from the PLD AND array.
    If the output enable product term is not active, the Direction Register has sole control of a
    given pin’s direction.
    An example of a configuration for a port with the three least significant bits set to output
    and the remainder set to input is shown in Table 22. Since Port D only contains four pins,
    the Direction Register for Port D has only the four least significant bits active.
    Direction Register Bit
    0
    1
    Port Pin Mode
    Input
    Output
    Table 20. Port Pin Direction Control,
    Output Enable P.T. Not Defined
    Direction Register Bit
    0
    0
    1
    1
    Output Enable P.T.
    0
    1
    0
    1
    Port Pin Mode
    Input
    Output
    Output
    Output
    Table 21. Port Pin Direction Control, Output Enable P.T. Defined
    Bit 7
    Bit 6
    Bit 5
    Bit 4
    Bit 3
    Bit 2
    Bit 1
    Bit 0
    0
    0
    0
    0
    0
    1
    1
    1
    Table 22. Port Direction Assignment Example
    相關(guān)PDF資料
    PDF描述
    PSD835F3V-A-15J Configurable Memory System on a Chip for 8-Bit Microcontrollers
    PSD835F3V-A-15JI Configurable Memory System on a Chip for 8-Bit Microcontrollers
    PSD835F3V-A-15M Configurable Memory System on a Chip for 8-Bit Microcontrollers
    PSD835F3V-A-15MI Configurable Memory System on a Chip for 8-Bit Microcontrollers
    PSD835F3V-A-15U Configurable Memory System on a Chip for 8-Bit Microcontrollers
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