PIC12F1822 current draw at different frequencies
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Measuring the current draw of the PIC 12F1822 at different internal oscillator frequencies
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For full discussion see: http://electromotiveforces.blogspot.com/2011/03/pic-12f1822-current-draw-at-different.html
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MCU programmed and powered by PICkit2
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No resistors, capacitors or other components connected
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C Compiler:mikroC Pro v.4.60
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Test Equipment:Fluke 87V DMM set to DC microampere, with Min-Max enabled
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Ambient Temp:27 to 29 Celsius
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Legend:
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LFLow-Frequency Internal Oscillator
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MFMedium-Frequency Internal Oscillator
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HFHigh-Frequency Internal Oscillator
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PORTA = 0; TRISA = 0; ANSELA = 0; WPUA =0xFF; WPUEN = 0. MCLR, WDT and PLL offTRISA = 0xFF; ANSELA = 0xFF; WPUA =0xFF; WPUEN = 0. MCLR, WDT and PLL offTRISA = 0xFF; ANSELA = 0xFF; WPUA = 0; WPUEN = 1. MCLR, WDT and PLL off
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Current Draw (microamps) with Vdd @5.0V Current Draw (microamps) with Vdd @3.0V Current Draw (microamps) with Vdd @5.0V Current Draw (microamps) with Vdd @3.0V Current Draw (microamps) with Vdd @5.0V Current Draw (microamps) with Vdd @3.0V
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Oscillator TypeFrequency (kHz)OSCCON valueMaximumMinimumAverageMaximumMinimumAverageMaximumMinimumAverageMaximumMinimumAverageMaximumMinimumAverageMaximumMinimumAverageFrequency (kHz)Oscillator Type
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sleep0any21.121.021.120.019.920.022.422.322.421.421.221.374.371.972.630.229.629.90sleep
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LF310x0025.625.525.624.524.324.427.126.927.025.925.625.781.479.880.335.134.734.831LF
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MF31.250x10157.2156.9157.1123.2122.9123.0164.7164.3164.5128.8128.5128.6219.2215.8217.1138.1137.3137.731.25MF
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MF62.50x20158.7158.4158.5124.5124.3124.3166.0165.6165.8130.3129.9130.0219.9217.7218.7139.7138.9139.162.5MF
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MF1250x28161.3161.0161.1127.2126.8127.0168.7168.4168.5133.0132.6132.7222.8220.4221.6142.9142.0142.4125MF
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MF2500x30166.2165.9166.1132.4132.0132.1173.7173.3173.5138.0137.7137.8229.6226.8228.2149.5148.4148.9250MF
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MF5000x38174.2174.0174.1141.0140.5140.6182.5182.1182.3147.2146.8146.9238.8236.4237.4159.9159.1159.5500HF
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HF31.250x18344.2343.7344.1302.5301.1301.4359.7359.3359.5315.4314.4314.6413.3410.7411.9324.7322.9323.331.25HF
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HF1250x40348.6348.2348.4306.7305.4305.5364.0363.5363.7319.9318.3318.7418.8415.2416.8329.7327.8328.6125HF
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HF2500x48353.9353.5353.7311.8310.5311.0369.8369.2369.6325.3324.2324.4423.8421.5422.2335.5334.3334.7250HF
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HF5000x50364.0363.7363.9321.9320.6320.8379.3378.9379.1335.3333.8334.1436.9433.9435.5348.5346.7347.0500HF
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HF10000x58389.9389.6389.8347.7346.1346.3407.2406.7406.9362.1360.5360.8467.3464.4465.7378.9376.4377.01000HF
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HF20000x60434.5434.1434.3391.5389.1389.6450.5449.9450.2404.6403.0403.4519.1515.9517.5428.4426.8427.12000HF
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HF40000x68519.0518.4518.7472.2469.8470.6540.4539.9540.2491.0488.9489.4618.4615.7616.6525.5521.9522.54000HF
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HF80000x707417407416856826837537527526936916928768748757737687708000HF
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HF160000x781,0051,0041,0059379319321,0381,0361,0379659609611,2091,2071,2081,0841,0801,08116000HF
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HF320000xF01,9441,9421,9431,7901,7841,7841,9681,9661,9671,8181,8041,8062,2982,2952,2962,0722,0582,06232000HF
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average uA @5.0V
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kHzlog base 2MFHF
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31.2514.93156857157.1344.1
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62.515.93156857158.5
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12516.93156857161.1348.4
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25017.93156857166.1353.7
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50018.93156857174.1363.9
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100019.93156857389.8
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200020.93156857434.3
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400021.93156857518.7
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800022.93156857741
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1600023.931568571005
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3200024.931568571943
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