參數(shù)資料
    型號: MC68HC11F1CFN2
    廠商: Freescale Semiconductor
    文件頁數(shù): 12/158頁
    文件大?。?/td> 0K
    描述: IC MCU 512 EEPROM 2MHZ 68-PLCC
    標(biāo)準(zhǔn)包裝: 18
    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(shè)備: POR,WDT
    輸入/輸出數(shù): 30
    程序存儲器類型: ROMless
    EEPROM 大小: 512 x 8
    RAM 容量: 1K x 8
    電壓 - 電源 (Vcc/Vdd): 4.75 V ~ 5.25 V
    數(shù)據(jù)轉(zhuǎn)換器: A/D 8x8b
    振蕩器型: 內(nèi)部
    工作溫度: -40°C ~ 85°C
    封裝/外殼: 68-LCC(J 形引線)
    包裝: 管件
    TIMING SYSTEM
    TECHNICAL DATA
    9-3
    9.1 Timer Structure
    Figure 9-2 shows the capture/compare system block diagram. The port A pin control
    block includes logic for timer functions and for general-purpose I/O. For pins PA3,
    PA2, PA1, and PA0, this block contains both the edge-detection logic and the control
    logic that enables the selection of which edge triggers an input capture. The digital lev-
    el on PA[3:0] can be read at any time (read PORTA register), even if the pin is being
    used for the input capture function. Pins PA[6:3] are used for either general-purpose
    I/O, or as output compare pins. When one of these pins is being used for an output
    compare function, it cannot be written directly as if it were a general-purpose output.
    Each of the output compare functions (OC[5:2]) is related to one of the port A output
    pins. Output compare one (OC1) has extra control logic, allowing it optional control of
    any combination of the PA[7:3] pins. The PA7 pin can be used as a general-purpose
    I/O pin, as an input to the pulse accumulator, or as an OC1 output pin.
    Table 9-1 Timer Summary
    XTAL Frequencies
    4.0 MHz
    8.0 MHz
    12.0 MHz
    16.0 MHz
    Other Rates
    1.0 MHz
    2.0 MHz
    3.0 MHz
    4.0 MHz
    (E)
    Control Bits
    1000 ns
    500 ns
    333 ns
    250 ns
    (1/E)
    PR1, PR0
    Main Timer Count Rates
    0 0
    1 count —
    overflow —
    1.0
    s
    65.536 ms
    500 ns
    32.768 ms
    333 ns
    21.845 ms
    250 ns
    16.384 ms
    (1/E)
    (216/E)
    0 1
    1 count —
    overflow —
    4.0
    s
    262.14 ms
    2.0
    s
    131.07 ms
    1.333
    s
    87.381 ms
    1.0
    s
    65.536 ms
    (4/E)
    (218/E)
    1 0
    1 count —
    overflow —
    8.0
    s
    524.29 ms
    4.0
    s
    262.14 ms
    2.667
    s
    174.76 ms
    2.0
    s
    131.07 ms
    (8/E)
    (219/E)
    1 1
    1 count —
    overflow —
    16.0
    s
    1.049 s
    8.0
    s
    524.29 ms
    5.333
    s
    349.52 ms
    4.0
    s
    262.14 ms
    (16/E)
    (220/E)
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    Freescale Semiconductor, Inc.
    For More Information On This Product,
    Go to: www.freescale.com
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