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    參數(shù)資料
    型號: HD4043312FS
    廠商: Hitachi,Ltd.
    英文描述: 4-bit HMCS400-Series microcomputer with large-capacity memory
    中文描述: 4位HMCS400系列的大容量存儲器微機
    文件頁數(shù): 49/78頁
    文件大小: 337K
    代理商: HD4043312FS
    HD404339 Series
    49
    Alarm Output Function
    The MCU has an alarm output function built in. By setting port mode register C (PMRC: $025), one of
    four alarm frequencies supplied from the PSS can be selected.
    I
    Selector
    System
    clock
    PER
    Prescaler S (PSS)
    2
    Alarm output
    control signal
    BUZZ
    Alarm output
    controller
    Port mode
    register C
    (PMRC)
    Port mode
    register A
    (PMRA)
    ÷
    ÷
    ÷
    ÷
    2
    5
    1
    2
    Figure 37 Alarm Output Function Block Diagram
    Table 9
    Port Mode Register C
    PMRC
    Bit 3
    Bit 2
    System Clock Divisor
    0
    0
    ÷
    2048
    ÷
    1024
    ÷
    512
    ÷
    256
    1
    1
    0
    1
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