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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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TMP320C2811PBKA датащи(PDF) 87 Page - Texas Instruments |
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TMP320C2811PBKA датащи(HTML) 87 Page - Texas Instruments |
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87 / 147 page  Electrical Specifications 87 June 2004 SPRS257 6.5 Current Consumption Graphs 0 5 15 30 45 60 75 90 105 120 135 150 SYSCLOCKOUT (MHz) 0 30 60 90 120 150 180 210 240 IDD IDDIO IDDA Total Figure 6−1. R2812/R2811 Typical Current Consumption (With Peripheral Clocks Enabled) 6.6 Reducing Current Consumption 28x DSPs incorporate a unique method to reduce the device current consumption. A reduction in current consumption can be achieved by turning off the clock to any peripheral module which is not used in a given application. Table 6−1 indicates the typical reduction in current consumption achieved by turning off the clocks to various peripherals. Table 6−1. Typical Current Consumption by Various Peripherals (at 150 MHz)† PERIPHERAL MODULE IDD CURRENT REDUCTION (mA) eCAN 12 EVA 6 EVB 6 ADC 8‡ SCI 4 SPI 5 McBSP 13 † All peripheral clocks are disabled upon reset. Writing to/reading from peripheral registers is possible only after the peripheral clocks are turned on. ‡ This number represents the current drawn by the digital portion of the ADC module. Turning off the clock to the ADC module results in the elimination of the current drawn by the analog portion of the ADC (ICCA) as well. 6.7 Power Sequencing Requirements Power sequencing is not required on the R281x devices. In other words, 3.3-V and 1.8-V (or 1.9-V) can ramp together. R281x can also be used on boards that have F281x power sequencing implemented; however, if the 1.8-V (or 1.9-V) rail lags the 3.3-V rail, the GPIO pins are undefined until the 1.8-V rail reaches at least 1 V. |
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