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    參數(shù)資料
    型號: PSD9132V20MIT
    廠商: 意法半導(dǎo)體
    英文描述: Flash In-System Programmable ISP Peripherals For 8-bit MCUs
    中文描述: Flash在系統(tǒng)可編程ISP的外設(shè)的8位微控制器
    文件頁數(shù): 74/110頁
    文件大小: 1737K
    代理商: PSD9132V20MIT
    PSD813F2, PSD833F2, PSD834F2, PSD853F2, PSD854F2
    74/110
    Table 37. Example of PSD Typical Power Calculation at V
    CC
    = 5.0V (Turbo Mode Off)
    Conditions
    Highest Composite PLD input frequency
    (Freq PLD)
    = 8 MHz
    MCU ALE frequency (Freq ALE)
    = 4 MHz
    % Flash memory Access
    = 80%
    % SRAM access
    = 15%
    % I/O access
    = 5% (no additional power above base)
    Operational Modes
    % Normal
    = 10%
    % Power-down Mode
    = 90%
    Number of product terms used
    (from fitter report)
    = 45 PT
    % of total product terms
    = 45/182 = 24.7%
    Turbo Mode
    = Off
    Calculation (using typical values)
    I
    CC
    total
    = Ipwrdown x %pwrdown + %normal x (I
    CC
    (ac) + I
    CC
    (dc))
    = Ipwrdown x %pwrdown + % normal x (%flash x 2.5mA/MHz x Freq ALE
    + %SRAM x 1.5mA/MHz x Freq ALE
    + % PLD x (from graph using Freq PLD))
    = 50μA x 0.90 + 0.1 x (0.8 x 2.5mA/MHz x 4 MHz
    + 0.15 x 1.5mA/MHz x 4 MHz
    + 24mA)
    = 45μA + 0.1 x (8 + 0.9 + 24)
    = 45μA + 0.1 x 32.9
    = 45μA + 3.29mA
    = 3.34mA
    This is the operating power with no EEPROM WRITE or Flash memory Erase cycles in progress. Calculation is based
    on I
    OUT
    = 0mA.
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