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    參數(shù)資料
    型號(hào): GMS90C54
    英文描述: 8-Bit CMOS Microcontroller(8位CMOS 微控制器)
    中文描述: 8位CMOS微控制器(8位的CMOS微控制器)
    文件頁數(shù): 33/59頁
    文件大?。?/td> 812K
    代理商: GMS90C54
    AC Characteristics for GMS90 series (12MHz version)
    Vcc = 5 V
    : V
    CC
    = 5 V + 10%, -15%;
    V
    SS
    = 0 V; TA = 0
    °
    C to 70
    °
    C
    (
    C
    L
    for port 0. ALE and PSEN outputs = 100pF; CL for all other outputs = 80 pF)
    Vcc = 3.3 V
    : V
    CC
    = 3.3 V + 0.3 V, -0.6 V;
    V
    SS
    = 0 V; TA = 0
    °
    C to 70
    °
    C
    (
    C
    L
    for port 0. ALE and PSEN outputs = 50pF;
    C
    L
    for all other outputs = 50 pF)
    Variable clock
    : Vcc = 5V : 1/
    t
    CLCL
    = 3.5 MHz to 12 MHz
    Vcc = 3.3V : 1/
    t
    CLCL
    = 1 MHz to 12 MHz
    Program Memory Characteristics
    Parameter
    Symbol
    Limit Values
    Unit
    12 MHz
    Clock
    Variable Clock
    min.
    max.
    min.
    max.
    ALE pulse width
    t
    LHLL
    127
    -
    2
    t
    CLCL
    - 40
    -
    ns
    Address setup to ALE
    t
    AVLL
    43
    -
    t
    CLCL
    - 40
    -
    ns
    Address hold after ALE
    t
    LLAX
    30
    -
    t
    CLCL
    -53
    -
    ns
    ALE low to valid instr in
    t
    LLIV
    -
    233
    -
    4
    t
    CLCL
    - 100
    ns
    ALE to PSEN
    t
    LLPL
    58
    -
    t
    CLCL
    - 25
    -
    ns
    PSEN pulse width
    t
    PLPH
    215
    -
    3
    t
    CLCL
    - 35
    -
    ns
    PSEN to valid instr in
    t
    PLIV
    -
    150
    -
    3
    t
    CLCL
    - 100
    ns
    Input instruction hold after PSEN
    t
    PXOX
    0
    -
    0
    -
    ns
    Input instruction float after PSEN
    t
    PXIZ*)
    -
    63
    -
    t
    CLCL
    - 20
    ns
    Address valid after PSEN
    t
    PXAV*)
    75
    -
    t
    CLCL
    - 8
    -
    ns
    Address to valid instruction in
    t
    AVIV
    -
    302
    -
    5
    t
    CLCL
    - 115
    ns
    Address float to PSEN
    t
    AZPL
    0
    -
    0
    -
    ns
    *) Interfacing the GMS90 series to devices with float times up to 75 ns is permissible. This limited bus
    contention will not cause any damage to port 0 Drivers.
    8-Bit CMOS Microcontroller
    GMS90 Series
    MAY. 1998
    33
    LG Semicon MCU
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