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    參數(shù)資料
    型號: MC68HC711D3CFN2
    廠商: Freescale Semiconductor
    文件頁數(shù): 38/124頁
    文件大?。?/td> 0K
    描述: IC MCU 2MHZ 4K OTP 44-PLCC
    標準包裝: 26
    系列: HC11
    核心處理器: HC11
    芯體尺寸: 8-位
    速度: 2MHz
    連通性: SCI,SPI
    外圍設備: POR,WDT
    輸入/輸出數(shù): 26
    程序存儲器容量: 4KB(4K x 8)
    程序存儲器類型: OTP
    RAM 容量: 192 x 8
    電壓 - 電源 (Vcc/Vdd): 4.5 V ~ 5.5 V
    振蕩器型: 內(nèi)部
    工作溫度: -40°C ~ 85°C
    封裝/外殼: 44-LCC(J 形引線)
    包裝: 管件
    PIN DESCRIPTIONS
    2-8
    TECHNICAL DATA
    output port suitable for wired-OR operation. In wired-OR mode (a port C bit is at logic
    level zero), it is actively driven low by the N-channel driver. When a port C bit is at logic
    level one, the associated pin has high impedance, as neither the N- nor the P-channel
    devices are active. It is customary to have an external pullup resistor on lines that are
    driven by open-drain devices. Port C can only be configured for wired-OR operation
    when the MCU is in single-chip mode. Refer to SECTION 6 PARALLEL I/O for addi-
    tional information about port C functions.
    2.10.4 Port D
    Port D, an 8-bit, general-purpose I/O port has a data register (PORTD) and a data di-
    rection register (DDRD). The eight port D bits (D[7:0]) can be used for general-purpose
    I/O, for the serial communications interface (SCI) and serial peripheral interface (SPI)
    subsystems, or for bus data direction control.
    Port D can be read at any time and inputs return the sensed levels at the pin; whereas,
    the outputs return the input level of the port D pin drivers. If PORTD is written, the data
    is stored in an internal latch, and can be driven only if port D is configured for general-
    purpose output. This port shares functions with the on-chip SCI and SPI subsystems,
    while bits 6 and 7 control the direction of data flow on the bus in expanded and special
    test modes.
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    Freescale Semiconductor, Inc.
    For More Information On This Product,
    Go to: www.freescale.com
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