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    參數(shù)資料
    型號(hào)： HD404616
    廠商： Hitachi,Ltd.
    英文描述： 4-Bit Single-Chip Microcomputer
    中文描述： 4位單片機(jī)
    文件頁(yè)數(shù)： 64/89頁(yè)
    文件大?。?/td> 358K
    代理商： HD404616
    HD404618 Series
    64
    Table 31 Tone Generator Control Register
    TGC
    Bit 1
    DTMF Enable Bit
    0
    DTMF disabled
    1
    DTMF enabled
    TGC
    Bit 2
    TONER Output Control (row)
    0
    Stopped
    1
    TONER output (active)
    TGC
    Bit 3
    TONEC Output Control (column)
    0
    Stopped
    1
    TONEC output (active)
    Tone Generator Speed Flag (TGSP: $020,Bit 2):
    One-bit register which can be set and reset by the
    SEM/REM and SEMD/REMD instructions. The DTMF generation circuit generates output frequencies
    with a 400-kHz clock (table 30). With an 800-kHz clock, the DTMF generation circuit generates these
    same frequencies by pulling the TGSP flag high.
    DTMF Output:
    The sine waves of the row-group and column-group are individually converted from
    digital to analog in the D/A conversion circuit, which provides high-precision ladder resistance. The
    DTMF output pins, TONER and TONEC, transmit the sine waves of the row-group and column-group,
    respectively. Figure 41 shows thetone output equivalent circuit. Figure 42 shows the output waveform.
    One cycle of this wave consists of 32 time slots, making the output waveform stable with little distortion.
    Table 32 lists the frequency deviation of the MCU from standard DTMF signals.
    VT
    ref
    GND
    Switch control
    TONER
    TONEC
    Figure 41 Tone Output Equivalent Circuit
    相關(guān)PDF資料
    PDF描述
    HD404616FS 4-Bit Single-Chip Microcomputer
    HD404616H 4-Bit Single-Chip Microcomputer
    HD404616TF 4-Bit Single-Chip Microcomputer
    HD404618 4-Bit Single-Chip Microcomputer
    HD404618FS 4-Bit Single-Chip Microcomputer
    相關(guān)代理商/技術(shù)參數(shù)
    參數(shù)描述
    HD404616FS 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:4-Bit Single-Chip Microcomputer
    HD404616H 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:4-Bit Single-Chip Microcomputer
    HD404616TF 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:4-Bit Single-Chip Microcomputer
    HD404618 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:4-Bit Single-Chip Microcomputer
    HD404618FS 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:4-Bit Single-Chip Microcomputer
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