<noscript id="vzrif"><xmp id="vzrif">

    <source id="vzrif"><del id="vzrif"><ol id="vzrif"></ol></del></source><div id="vzrif"><video id="vzrif"></video></div>
  • 參數(shù)資料
    型號: PSD935F2-20MI
    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): 41/91頁
    文件大小: 488K
    代理商: PSD935F2-20MI
    PSD9XX Family
    PSD935G2
    40
    The
    PSD935G2
    Functional
    Blocks
    (cont.)
    Configuration
    80C251
    Read/Write
    Pins
    Connecting to
    PSD935G2
    Pins
    Page Mode
    WR
    RD
    PSEN
    CNTL0
    CNTL1
    CNTL2
    Non-Page Mode, 80C31 compatible
    A
    [
    7:0
    ]
    multiplex with D
    [
    7:0
    }
    1
    2
    WR
    PSEN only
    CNTL0
    CNTL1
    Non-Page Mode
    A
    [
    7:0
    ]
    multiplex with D
    [
    7:0
    }
    3
    WR
    PSEN only
    CNTL0
    CNTL1
    Page Mode
    A
    [
    15:8
    ]
    multiplex with D
    [
    7:0
    }
    4
    WR
    RD
    PSEN
    CNTL0
    CNTL1
    CNTL2
    Page Mode
    A
    [
    15:8
    ]
    multiplex with D
    [
    7:0
    }
    Table 15. 80C251 Configurations
    9.3.3.3 80C51XA
    The Philips 80C51XA microcontroller family supports an 8- or 16-bit multiplexed bus that
    can have burst cycles. Address bits A[3:0] are not multiplexed, while A[19:4] are
    multiplexed with data bits D[15:0] in 16-bit mode. In 8-bit mode, A[11:4] are multiplexed
    with data bits D[7:0].
    The 80C51XA can be configured to operate in eight-bit data mode. (shown in Figure 18).
    The 80C51XA improves bus throughput and performance by executing Burst cycles for
    code fetches. In Burst Mode, address A19-4 are latched internally by the PSD935G2, while
    the 80C51XA changes the A3-0 lines to fetch up to 16 bytes of code. The PSD access
    time is then measured from address A3-A0 valid to data in valid. The PSD bus timing
    requirement in Burst Mode is identical to the normal bus cycle, except the address setup
    and hold time with respect to ALE does not apply.
    9.3.3.4 68HC11
    Figure 19 shows an interface to a 68HC11 where the PSD935G2 is configured in 8-bit
    multiplexed mode with E and R/W settings. The DPLD can generate the READ and WR
    signals for external devices.
    相關(guān)PDF資料
    PDF描述
    PSD935F2-20U Configurable Memory System on a Chip for 8-Bit Microcontrollers
    PSD935F2-20UI Configurable Memory System on a Chip for 8-Bit Microcontrollers
    PSD935F2-70B81 Configurable Memory System on a Chip for 8-Bit Microcontrollers
    PSD935F2-70B81I Configurable Memory System on a Chip for 8-Bit Microcontrollers
    PSD935F2-70J Configurable Memory System on a Chip for 8-Bit Microcontrollers
    相關(guān)代理商/技術(shù)參數(shù)
    參數(shù)描述
    PSD935G2-90U 功能描述:SPLD - 簡單可編程邏輯器件 TQFP-80 5V 4M 90N RoHS:否 制造商:Texas Instruments 邏輯系列:TICPAL22V10Z 大電池數(shù)量:10 最大工作頻率:66 MHz 延遲時間:25 ns 工作電源電壓:4.75 V to 5.25 V 電源電流:100 uA 最大工作溫度:+ 75 C 最小工作溫度:0 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:DIP-24
    PSD935G2V-90U 功能描述:SPLD - 簡單可編程邏輯器件 U 511-PSD835G2V-90U RoHS:否 制造商:Texas Instruments 邏輯系列:TICPAL22V10Z 大電池數(shù)量:10 最大工作頻率:66 MHz 延遲時間:25 ns 工作電源電壓:4.75 V to 5.25 V 電源電流:100 uA 最大工作溫度:+ 75 C 最小工作溫度:0 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:DIP-24
    PSD954F2-90J 功能描述:SPLD - 簡單可編程邏輯器件 U 511-PSD854F2-90J RoHS:否 制造商:Texas Instruments 邏輯系列:TICPAL22V10Z 大電池數(shù)量:10 最大工作頻率:66 MHz 延遲時間:25 ns 工作電源電壓:4.75 V to 5.25 V 電源電流:100 uA 最大工作溫度:+ 75 C 最小工作溫度:0 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:DIP-24
    PSD954F2-90M 功能描述:SPLD - 簡單可編程邏輯器件 U 511-PSD854F2-90M RoHS:否 制造商:Texas Instruments 邏輯系列:TICPAL22V10Z 大電池數(shù)量:10 最大工作頻率:66 MHz 延遲時間:25 ns 工作電源電壓:4.75 V to 5.25 V 電源電流:100 uA 最大工作溫度:+ 75 C 最小工作溫度:0 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:DIP-24
    PSD954F2V-90J 功能描述:SPLD - 簡單可編程邏輯器件 5.0V 2M 90ns RoHS:否 制造商:Texas Instruments 邏輯系列:TICPAL22V10Z 大電池數(shù)量:10 最大工作頻率:66 MHz 延遲時間:25 ns 工作電源電壓:4.75 V to 5.25 V 電源電流:100 uA 最大工作溫度:+ 75 C 最小工作溫度:0 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:DIP-24