• <dl id="6k6hc"><dl id="6k6hc"></dl></dl>
  • 參數(shù)資料
    型號: MCF5213CAF66
    廠商: Freescale Semiconductor
    文件頁數(shù): 31/56頁
    文件大?。?/td> 0K
    描述: IC MCU 256K FLASH 66MHZ 100-LQFP
    標(biāo)準(zhǔn)包裝: 90
    系列: MCF521x
    核心處理器: Coldfire V2
    芯體尺寸: 32-位
    速度: 66MHz
    連通性: CAN,I²C,SPI,UART/USART
    外圍設(shè)備: DMA,LVD,POR,PWM,WDT
    輸入/輸出數(shù): 55
    程序存儲器容量: 256KB(256K x 8)
    程序存儲器類型: 閃存
    RAM 容量: 32K x 8
    電壓 - 電源 (Vcc/Vdd): 3 V ~ 3.6 V
    數(shù)據(jù)轉(zhuǎn)換器: A/D 8x12b
    振蕩器型: 內(nèi)部
    工作溫度: -40°C ~ 85°C
    封裝/外殼: 100-LQFP
    包裝: 托盤
    配用: M5213EVBE-ND - KIT EVAL FOR MCF5213
    M5211DEMO-ND - KIT DEMO FOR MCF5211
    Electrical Characteristics
    MCF5213 ColdFire Microcontroller, Rev. 3
    Freescale Semiconductor
    37
    2.12
    Equivalent Circuit for ADC Inputs
    Figure 10-17 shows the ADC input circuit during sample and hold. S1 and S2 are always open/closed at the same time that S3
    is closed/open. When S1/S2 are closed & S3 is open, one input of the sample and hold circuit moves to (VREFH-VREFL)/2, while
    the other charges to the analog input voltage. When the switches are flipped, the charge on C1 and C2 are averaged via S3, with
    the result that a single-ended analog input is switched to a differential voltage centered about (VREFH-VREFL)/2. The switches
    switch on every cycle of the ADC clock (open one-half ADC clock, closed one-half ADC clock). There are additional
    capacitances associated with the analog input pad, routing, etc., but these do not filter into the S/H output voltage, as S1 provides
    isolation during the charge-sharing phase. One aspect of this circuit is that there is an on-going input current, which is a function
    of the analog input voltage, VREF and the ADC clock frequency.
    1.
    Parasitic capacitance due to package, pin-to-pin and pin-to-package base coupling; 1.8pF
    2.
    Parasitic capacitance due to the chip bond pad, ESD protection devices and signal routing; 2.04pF
    3.
    Equivalent resistance for the channel select mux; 100
    Ωs
    4.
    Sampling capacitor at the sample and hold circuit. Capacitor C1 is normally disconnected from the input and is only
    connected to it at sampling time; 1.4pF
    5.
    Equivalent input impedance, when the input is selected =
    Figure 8. Equivalent Circuit for A/D Loading
    THD
    Total harmonic distortion
    75
    dB
    SFDR
    Spurious free dynamic range
    67 to 70.3
    dB
    SINAD
    Signal-to-noise plus distortion
    61 to 63.9
    dB
    ENOB
    Effective number of bits
    9.1
    10.6
    Bits
    1 All measurements are preliminary pending full characterization, and made at V
    DD = 3.3V, VREFH = 3.3V, and VREFL = ground
    2 INL measured from V
    IN = VREFL to VIN = VREFH
    3 LSB = Least Significant Bit
    4 INL measured from V
    IN = 0.1VREFH to VIN = 0.9VREFH
    5 Includes power-up of ADC and V
    REF
    6 ADC clock cycles
    7 Current that can be injected or sourced from an unselected ADC signal input without impacting the performance of the ADC
    Table 32. ADC Parameters1 (continued)
    Name
    Characteristic
    Min
    Typical
    Max
    Unit
    1
    2
    3
    Analog Input
    4
    S1
    S2
    S3
    C1
    C2
    S/H
    C1 = C2 = 1pF
    (VREFH- VREFL)/ 2
    125W ESD Resistor
    8pF noise damping capacitor
    1
    (ADC Clock Rate)
    × (1.4×10-12)
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