參數(shù)資料
    型號(hào): PIC16C642T-20I/SO
    廠商: Microchip Technology
    文件頁(yè)數(shù): 32/125頁(yè)
    文件大?。?/td> 0K
    描述: IC MCU OTP 4KX14 COMP 28SOIC
    標(biāo)準(zhǔn)包裝: 1,600
    系列: PIC® 16C
    核心處理器: PIC
    芯體尺寸: 8-位
    速度: 20MHz
    外圍設(shè)備: 欠壓檢測(cè)/復(fù)位,LED,POR,WDT
    輸入/輸出數(shù): 22
    程序存儲(chǔ)器容量: 7KB(4K x 14)
    程序存儲(chǔ)器類型: OTP
    RAM 容量: 176 x 8
    電壓 - 電源 (Vcc/Vdd): 4 V ~ 6 V
    振蕩器型: 外部
    工作溫度: -40°C ~ 85°C
    封裝/外殼: 28-SOIC(0.295",7.50mm 寬)
    包裝: 帶卷 (TR)
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    Micrel, Inc.
    KSZ8862-16/32MQL
    April 2007
    14
    M9999-040407-3.0
    Pin
    Number
    Pin Name
    Type
    Pin Function
    Asynchronous write strobe, active Low.
    34
    DGND
    Gnd
    Digital IO ground
    35
    ADSN
    Ipd
    Address Strobe Not
    For systems that require address latching, the rising edge of ADSN indicates the
    latching moment of A15-A1 and AEN.
    36
    PWRDN
    Ipu
    Full-chip power-down. Low = Power down; High or floating = Normal operation.
    37
    AGND
    Gnd
    Analog ground
    38
    VDDA
    P
    1.2V analog VDD input power supply from VDDCO (pin24) through external Ferrite
    bead and capacitor.
    39
    AGND
    Gnd
    Analog ground
    40
    NC
    No connect
    41
    100FX/10FL
    Ipu
    Fiber mode select for port 1. 1K ohm pull-up to 3.3V for 100Base-FX, 100 ohm pull-
    down to GND for 100Base-SX or 10Base-FL.
    42
    AGND
    Gnd
    Analog ground
    43
    VDDA
    P
    1.2V analog VDD input power supply from VDDCO (pin24) through external Ferrite
    bead and capacitor.
    44
    FXSD1
    I
    Fiber signal detect input for port 1 in 100Base-FX fiber mode. 1K ohm pull-up to 3.3V
    for port 1 in 100Base-SX or 10Base-FL fiber modes.
    45
    RXP1
    I/O
    Port 1 physical receive (MDI) signal (+ differential) from external fiber module
    46
    RXM1
    I/O
    Port 1 physical receive (MDI) signal (– differential) from external fiber module
    47
    AGND
    Gnd
    Analog ground
    48
    TXP1
    I/O
    Port 1 physical transmit (MDI) signal (+ differential) to external fiber module
    49
    TXM1
    I/O
    Port 1 physical transmit (MDI) signal (– differential) to external fiber module
    50
    VDDATX
    P
    3.3V analog VDD input power supply with well decoupling capacitors.
    51
    VDDARX
    P
    3.3V analog VDD input power supply with well decoupling capacitors.
    52
    RXM2
    I/O
    Port 2 physical receive (MDI) or transmit (MDIX) signal (- differential)
    53
    RXP2
    I/O
    Port 2 physical receive (MDI) or transmit (MDIX) signal (+ differential)
    54
    AGND
    Gnd
    Analog ground
    55
    TXM2
    I/O
    Port 2 physical receive (MDI) or transmit (MDIX) signal (- differential)
    56
    TXP2
    I/O
    Port 2 physical receive (MDI) or transmit (MDIX) signal (+ differential)
    57
    VDDA
    P
    1.2 analog VDD input power supply from VDDCO (pin24) through external Ferrite
    bead and capacitor.
    58
    AGND
    Gnd
    Analog ground
    59
    NC
    Ipu
    No connect
    60
    NC
    Ipu
    No connect
    61
    ISET
    O
    Set physical transmits output current.
    Pull-down this pin with a 3.01K 1% resistor to ground.
    62
    AGND
    Gnd
    Analog ground
    63
    VDDAP
    P
    1.2V analog VDD for PLL input power supply from VDDCO (pin24) through external
    Ferrite bead and capacitor.
    64
    AGND
    Gnd
    Analog ground
    65
    X1
    I
    25MHz crystal or oscillator clock connection.
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