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AM335x Power Measurement Archive

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AM335x Power Consumption for different use cases[edit]

The power measurements have been performed on the earlier version of software release. The ARM clock frequency and DDR clock frequency are different than the configurations shown in the datasheet.

Dynamic voltage and frequency scaling (DVFS) and SmartReflex Adaptive Voltage Scaling (AVS) are not enabled in the software. VDD_MPU and VDD_CORE active power can be reduced by utilizing these power management techniques.


No OS : DDR Access[edit]

Software : Bare metal code
Use Case : Continuous DMA read/write from/to DDR2 memory
OPP : OPP100 (ARM 550 MHz, DDR 200 MHz, L3 200 MHz, L4 100 MHz)

Power Supply Nominal Rating Jumper Shunt [Ohm] Voltage Drop [mV] Voltage [V] Current [mA] Power [mW]
VDD_CORE 1.1V +/-4% N/A 0.05 9.09 1.094 181.86 198.95
VDD_MPU* 1.1V – 1.3V +/-4% N/A 0.05 6.04 1.105 120.82 133.49
VDDS_RTC 1.8V +/-5% J35 2 0.63 1.801 0.31 0.56
VDDS_DDR 1.8V +/-5% / 1.5V +/-5% J20 0.24 10.95 1.793 45.63 81.81
VDDS 1.8V +/-5% J21 0.24 0.07 1.797 0.30 0.54
VDDS_SRAM_CORE_BG 1.8V +/-5% J23 2 2.43 1.811 1.21 2.20
VDDS_SRAM_MPU_BB 1.8V +/-5% J25 2 2.42 1.811 1.21 2.19
VDDS_PLL_DDR 1.8V +/-5% J33 2 2.05 1.812 1.02 1.85
VDDS_PLL_CORE_LCD 1.8V +/-5% J24 2 13.71 1.800 6.85 12.33
VDDS_PLL_MPU 1.8V +/-5% J22 2 3.37 1.810 1.68 3.05
VDDS_OSC 1.8V +/-5% J29 2 1.34 1.812 0.67 1.21
VDDA1P8V_USB0/1 1.8V +/-5% J28 1 3.30 1.819 3.30 6.00
VDDA3P3V_USB0/1 3.3V +/-5% J31 2 0.05 3.317 0.03 0.09
VDDA_ADC 1.8V +/-5% J27 1 0.45 1.816 0.45 0.82
VDDSHV1 1.8 / 3.3 V +/-5% J26 0.24 0.05 3.327 0.21 0.71
VDDSHV2 1.8 / 3.3 V +/-5% J38 0.24 0.02 3.295 0.08 0.25
VDDSHV3 1.8 / 3.3 V +/-5% J39 0.24 0.01 3.328 0.06 0.19
VDDSHV4 1.8 / 3.3 V +/-5% J30 0.24 0.01 3.295 0.04 0.12
VDDSHV5 1.8 / 3.3 V +/-5% J32 0.24 0.01 3.328 0.06 0.19
VDDSHV6 1.8 / 3.3 V +/-5% J34 0.24 0.63 3.327 2.63 8.75
            Total 455.31


No OS : Static Image Display[edit]

Software : Bare metal code
Use Case : Display a static image on the LCD panel
OPP : OPP100 (ARM 550 MHz, DDR 200 MHz, L3 200 MHz, L4 100 MHz)

Power Supply Nominal Rating Jumper Shunt [Ohm] Voltage Drop [mV] Voltage [V] Current [mA] Power [mW]
VDD_CORE 1.1V +/-4% N/A 0.05 9.32 1.097 186.40 204.48
VDD_MPU 1.1V – 1.3V +/-4% N/A 0.05 5.99 1.104 119.89 132.36
VDDS_RTC 1.8V +/-5% J35 2 0.62 1.826 0.31 0.57
VDDS_DDR 1.8V +/-5% / 1.5V +/-5% J20 0.24 4.96 1.800 20.67 37.19
VDDS 1.8V +/-5% J21 0.24 0.10 1.796 0.41 0.73
VDDS_SRAM_CORE_BG 1.8V +/-5% J23 2 2.49 1.813 1.25 2.26
VDDS_SRAM_MPU_BB 1.8V +/-5% J25 2 2.48 1.813 1.24 2.25
VDDS_PLL_DDR 1.8V +/-5% J33 2 2.05 1.813 1.02 1.86
VDDS_PLL_CORE_LCD 1.8V +/-5% J24 2 13.71 1.799 6.85 12.33
VDDS_PLL_MPU 1.8V +/-5% J22 2 3.37 1.809 1.69 3.05
VDDS_OSC 1.8V +/-5% J29 2 1.34 1.812 0.67 1.22
VDDA1P8V_USB0/1 1.8V +/-5% J28 1 3.25 1.818 3.25 5.91
VDDA3P3V_USB0/1 3.3V +/-5% J31 2 0.06 3.316 0.03 0.09
VDDA_ADC 1.8V +/-5% J27 1 0.45 1.816 0.45 0.82
VDDSHV1 1.8 / 3.3 V +/-5% J26 0.24 0.01 3.326 0.02 0.07
VDDSHV2 1.8 / 3.3 V +/-5% J38 0.24 0.03 3.292 0.11 0.37
VDDSHV3 1.8 / 3.3 V +/-5% J39 0.24 0.01 3.327 0.05 0.18
VDDSHV4 1.8 / 3.3 V +/-5% J30 0.24 0.00 3.292 0.01 0.04
VDDSHV5 1.8 / 3.3 V +/-5% J32 0.24 0.01 3.326 0.04 0.12
VDDSHV6 1.8 / 3.3 V +/-5% J34 0.24 0.97 3.325 4.04 13.44
            Total 419.36


Linux PSP : No application running after boot[edit]

Software : Linux PSP
Use Case : Command prompt after login, No application running
OPP : OPP100 (ARM 550 MHz, DDR 200 MHz, L3 200 MHz, L4 100 MHz)

Power Supply Nominal Rating Jumper Shunt [Ohm] Voltage Drop [mV] Voltage [V] Current [mA] Power [mW]
VDD_CORE 1.1V +/-4% N/A 0.05 9.10 1.094 181.92 198.97
VDD_MPU 1.1V – 1.3V +/-4% N/A 0.05 5.56 1.104 111.20 122.73
VDDS_RTC 1.8V +/-5% J35 2 0.72 1.800 0.36 0.65
VDDS_DDR 1.8V +/-5% / 1.5V +/-5% J20 0.24 9.03 1.793 37.62 67.44
VDDS 1.8V +/-5% J21 0.24 0.13 1.796 0.55 1.00
VDDS_SRAM_CORE_BG 1.8V +/-5% J23 2 2.66 1.809 1.33 2.40
VDDS_SRAM_MPU_BB 1.8V +/-5% J25 2 2.70 1.809 1.35 2.44
VDDS_PLL_DDR 1.8V +/-5% J33 2 1.69 1.810 0.84 1.52
VDDS_PLL_CORE_LCD 1.8V +/-5% J24 2 15.98 1.797 7.99 14.36
VDDS_PLL_MPU 1.8V +/-5% J22 2 3.38 1.809 1.69 3.05
VDDS_OSC 1.8V +/-5% J29 2 1.33 1.811 0.67 1.21
VDDA1P8V_USB0/1 1.8V +/-5% J28 1 16.15 1.801 16.15 29.07
VDDA3P3V_USB0/1 3.3V +/-5% J31 2 5.21 3.309 2.61 8.62
VDDA_ADC 1.8V +/-5% J27 1 0.45 1.816 0.45 0.82
VDDSHV1 1.8 / 3.3 V +/-5% J26 0.24 0.02 3.324 0.08 0.28
VDDSHV2 1.8 / 3.3 V +/-5% J38 0.24 0.00 3.292 0.00 0.00
VDDSHV3 1.8 / 3.3 V +/-5% J39 0.24 0.01 3.325 0.06 0.19
VDDSHV4 1.8 / 3.3 V +/-5% J30 0.24 0.01 3.292 0.03 0.11
VDDSHV5 1.8 / 3.3 V +/-5% J32 0.24 0.93 3.323 3.89 12.92
VDDSHV6 1.8 / 3.3 V +/-5% J34 0.24 1.35 3.322 5.64 18.73
            Total 486.51


Linux PSP : Dhrystone[edit]

Software : Linux PSP
Use Case : Dhrystone
OPP : OPP100 (ARM 550 MHz, DDR 200 MHz, L3 200 MHz, L4 100 MHz)
Measured DMIPS/MHz : 1.8 ~ 1.9 DMIPS/MHz

Power Supply Nominal Rating Jumper Shunt [Ohm] Voltage Drop [mV] Voltage [V] Current [mA] Power [mW]
VDD_CORE 1.1V +/-4% N/A 0.05 9.38 1.096 187.68 205.70
VDD_MPU 1.1V – 1.3V +/-4% N/A 0.05 13.50 1.091 270.00 294.57
VDDS_RTC 1.8V +/-5% J35 2 0.75 1.800 0.37 0.67
VDDS_DDR 1.8V +/-5% / 1.5V +/-5% J20 0.24 11.44 1.790 47.68 85.34
VDDS 1.8V +/-5% J21 0.24 0.15 1.795 0.64 1.15
VDDS_SRAM_CORE_BG 1.8V +/-5% J23 2 3.06 1.808 1.53 2.76
VDDS_SRAM_MPU_BB 1.8V +/-5% J25 2 7.93 1.803 3.97 7.15
VDDS_PLL_DDR 1.8V +/-5% J33 2 1.70 1.810 0.85 1.53
VDDS_PLL_CORE_LCD 1.8V +/-5% J24 2 16.00 1.796 8.00 14.36
VDDS_PLL_MPU 1.8V +/-5% J22 2 3.38 1.807 1.69 3.05
VDDS_OSC 1.8V +/-5% J29 2 1.33 1.810 0.67 1.20
VDDA1P8V_USB0/1 1.8V +/-5% J28 1 16.20 1.800 16.20 29.17
VDDA3P3V_USB0/1 3.3V +/-5% J31 2 5.20 3.308 2.60 8.60
VDDA_ADC 1.8V +/-5% J27 1 0.45 1.815 0.45 0.81
VDDSHV1 1.8 / 3.3 V +/-5% J26 0.24 0.02 3.323 0.07 0.22
VDDSHV2 1.8 / 3.3 V +/-5% J38 0.24 0.00 3.274 0.00 0.00
VDDSHV3 1.8 / 3.3 V +/-5% J39 0.24 0.01 3.324 0.05 0.15
VDDSHV4 1.8 / 3.3 V +/-5% J30 0.24 0.01 3.278 0.04 0.12
VDDSHV5 1.8 / 3.3 V +/-5% J32 0.24 0.94 3.324 3.90 12.96
VDDSHV6 1.8 / 3.3 V +/-5% J34 0.24 1.35 3.321 5.63 18.68
            Total 688.21


Android DevKit : H.264 AV playback[edit]

Software : TI AM335x Android DevKit
Use Case : H.264 video playback
OPP : OPP100 (ARM 550 MHz, DDR 200 MHz, L3 200 MHz, L4 100 MHz)

Power Supply Nominal Rating Jumper Shunt [Ohm] Voltage Drop [mV] Voltage [V] Current [mA] Power [mW]
VDD_CORE 1.1V +/-4%   0.05 10.66 1.092 213.20 232.81
VDD_MPU 1.1V – 1.3V +/-4%   0.05 10.89 1.098 217.80 239.14
VDDS_RTC 1.8V +/-5% J35 2 0.74 1.801 0.37 0.67
VDDS_DDR 1.8V +/-5% / 1.5V +/-5% J20 0.24 11.70 1.798 48.75 87.65
VDDS 1.8V +/-5% J21 0.24 0.33 1.794 1.39 2.49
VDDS_SRAM_CORE_BG 1.8V +/-5% J23 2 2.99 1.811 1.50 2.71
VDDS_SRAM_MPU_BB 1.8V +/-5% J25 2 5.32 1.806 2.66 4.80
VDDS_PLL_DDR 1.8V +/-5% J33 2 1.69 1.810 0.85 1.53
VDDS_PLL_CORE_LCD 1.8V +/-5% J24 2 16.00 1.796 8.00 14.36
VDDS_PLL_MPU 1.8V +/-5% J22 2 3.38 1.808 1.69 3.05
VDDS_OSC 1.8V +/-5% J29 2 1.34 1.812 0.67 1.22
VDDA1P8V_USB0/1 1.8V +/-5% J28 1 9.79 1.818 9.79 17.79
VDDA3P3V_USB0/1 3.3V +/-5% J31 2 2.64 3.311 1.32 4.37
VDDA_ADC 1.8V +/-5% J27 1 0.45 1.815 0.45 0.82
VDDSHV1 1.8 / 3.3 V +/-5% J26 0.24 0.02 3.321 0.07 0.22
VDDSHV2 1.8 / 3.3 V +/-5% J38 0.24 1.87 3.260 7.79 25.40
VDDSHV3 1.8 / 3.3 V +/-5% J39 0.24 0.01 3.322 0.06 0.19
VDDSHV4 1.8 / 3.3 V +/-5% J30 0.24 1.44 2.257 6.02 13.58
VDDSHV5 1.8 / 3.3 V +/-5% J32 0.24 1.34 3.322 5.60 18.59
VDDSHV6 1.8 / 3.3 V +/-5% J34 0.24 2.72 3.320 11.33 37.63
            Total 709.03


Android DevKit : MPEG-4 AV playback[edit]

Software : TI AM335x Android DevKit
Use Case : MPEG-4 AV playback
OPP : OPP100 (ARM 550 MHz, DDR 200 MHz, L3 200 MHz, L4 100 MHz)

Power Supply Nominal Rating Jumper Shunt [Ohm] Voltage Drop [mV] Voltage [V] Current [mA] Power [mW]
VDD_CORE 1.1V +/-4%   0.05 10.51 1.092 210.20 229.54
VDD_MPU 1.1V – 1.3V +/-4%   0.05 10.14 1.098 202.80 222.67
VDDS_RTC 1.8V +/-5% J35 2 0.74 1.800 0.37 0.67
VDDS_DDR 1.8V +/-5% / 1.5V +/-5% J20 0.24 12.05 1.786 50.21 89.67
VDDS 1.8V +/-5% J21 0.24 0.36 1.794 1.50 2.69
VDDS_SRAM_CORE_BG 1.8V +/-5% J23 2 3.14 1.807 1.57 2.84
VDDS_SRAM_MPU_BB 1.8V +/-5% J25 2 5.07 1.808 2.54 4.58
VDDS_PLL_DDR 1.8V +/-5% J33 2 1.70 1.809 0.85 1.54
VDDS_PLL_CORE_LCD 1.8V +/-5% J24 2 16.01 1.796 8.01 14.38
VDDS_PLL_MPU 1.8V +/-5% J22 2 3.38 1.807 1.69 3.05
VDDS_OSC 1.8V +/-5% J29 2 1.33 1.811 0.67 1.21
VDDA1P8V_USB0/1 1.8V +/-5% J28 1 9.74 1.808 9.74 17.62
VDDA3P3V_USB0/1 3.3V +/-5% J31 2 2.63 3.310 1.32 4.36
VDDA_ADC 1.8V +/-5% J27 1 0.45 1.815 0.45 0.81
VDDSHV1 1.8 / 3.3 V +/-5% J26 0.24 0.02 3.322 0.07 0.22
VDDSHV2 1.8 / 3.3 V +/-5% J38 0.24 2.45 3.261 10.21 33.29
VDDSHV3 1.8 / 3.3 V +/-5% J39 0.24 0.01 3.322 0.05 0.17
VDDSHV4 1.8 / 3.3 V +/-5% J30 0.24 1.44 3.260 6.00 19.56
VDDSHV5 1.8 / 3.3 V +/-5% J32 0.24 1.33 3.320 5.54 18.40
VDDSHV6 1.8 / 3.3 V +/-5% J34 0.24 3.36 3.316 14.00 46.42
            Total 713.67


Android DevKit : Image Display[edit]

Software : TI AM335x Android DevKit
Use Case : Image Display (Sunset)
OPP : OPP100 (ARM 550 MHz, DDR 200 MHz, L3 200 MHz, L4 100 MHz)

Power Supply Nominal Rating Jumper Shunt [Ohm] Voltage Drop [mV] Voltage [V] Current [mA] Power [mW]
VDD_CORE 1.1V +/-4%   0.05 9.28 1.094 185.60 203.05
VDD_MPU 1.1V – 1.3V +/-4%   0.05 5.58 1.105 111.60 123.32
VDDS_RTC 1.8V +/-5% J35 2 0.73 1.800 0.37 0.66
VDDS_DDR 1.8V +/-5% / 1.5V +/-5% J20 0.24 10.42 1.789 43.42 77.67
VDDS 1.8V +/-5% J21 0.24 0.28 1.795 1.16 2.09
VDDS_SRAM_CORE_BG 1.8V +/-5% J23 2 2.75 1.811 1.38 2.49
VDDS_SRAM_MPU_BB 1.8V +/-5% J25 2 2.77 1.811 1.39 2.51
VDDS_PLL_DDR 1.8V +/-5% J33 2 1.70 1.812 0.85 1.54
VDDS_PLL_CORE_LCD 1.8V +/-5% J24 2 16.00 1.796 8.00 14.37
VDDS_PLL_MPU 1.8V +/-5% J22 2 3.38 1.808 1.69 3.05
VDDS_OSC 1.8V +/-5% J29 2 1.33 1.810 0.67 1.21
VDDA1P8V_USB0/1 1.8V +/-5% J28 1 9.76 1.808 9.76 17.65
VDDA3P3V_USB0/1 3.3V +/-5% J31 2 2.64 3.311 1.32 4.38
VDDA_ADC 1.8V +/-5% J27 1 0.45 1.815 0.45 0.81
VDDSHV1 1.8 / 3.3 V +/-5% J26 0.24 0.01 3.322 0.05 0.17
VDDSHV2 1.8 / 3.3 V +/-5% J38 0.24 0.25 3.266 1.03 3.36
VDDSHV3 1.8 / 3.3 V +/-5% J39 0.24 0.02 3.323 0.06 0.21
VDDSHV4 1.8 / 3.3 V +/-5% J30 0.24 1.45 3.266 6.04 19.73
VDDSHV5 1.8 / 3.3 V +/-5% J32 0.24 1.09 3.322 4.54 15.09
VDDSHV6 1.8 / 3.3 V +/-5% J34 0.24 2.45 3.319 10.21 33.88
            Total 527.22


Android DevKit : 3D Graphics (Vase)[edit]

Software : TI AM335x Android DevKit
Use Case : 3D Graphics (Vase)
OPP : OPP100 (ARM 550 MHz, DDR 200 MHz, L3 200 MHz, L4 100 MHz)

Power Supply Nominal Rating Jumper Shunt [Ohm] Voltage Drop [mV] Voltage [V] Current [mA] Power [mW]
VDD_CORE 1.1V +/-4%   0.05 11.32 1.091 226.40 247.00
VDD_MPU 1.1V – 1.3V +/-4%   0.05 6.36 1.104 127.20 140.43
VDDS_RTC 1.8V +/-5% J35 2 0.73 1.801 0.36 0.65
VDDS_DDR 1.8V +/-5% / 1.5V +/-5% J20 0.24 12.80 1.787 53.33 95.31
VDDS 1.8V +/-5% J21 0.24 0.34 1.794 1.40 2.50
VDDS_SRAM_CORE_BG 1.8V +/-5% J23 2 3.09 1.808 1.55 2.80
VDDS_SRAM_MPU_BB 1.8V +/-5% J25 2 3.45 1.808 1.73 3.12
VDDS_PLL_DDR 1.8V +/-5% J33 2 1.70 1.810 0.85 1.54
VDDS_PLL_CORE_LCD 1.8V +/-5% J24 2 16.01 1.797 8.00 14.38
VDDS_PLL_MPU 1.8V +/-5% J22 2 3.37 1.807 1.69 3.05
VDDS_OSC 1.8V +/-5% J29 2 1.33 1.811 0.67 1.21
VDDA1P8V_USB0/1 1.8V +/-5% J28 1 9.77 1.808 9.77 17.66
VDDA3P3V_USB0/1 3.3V +/-5% J31 2 2.64 3.310 1.32 4.36
VDDA_ADC 1.8V +/-5% J27 1 0.45 1.816 0.45 0.81
VDDSHV1 1.8 / 3.3 V +/-5% J26 0.24 0.02 3.319 0.08 0.25
VDDSHV2 1.8 / 3.3 V +/-5% J38 0.24 0.67 3.264 2.79 9.11
VDDSHV3 1.8 / 3.3 V +/-5% J39 0.24 0.01 3.322 0.05 0.15
VDDSHV4 1.8 / 3.3 V +/-5% J30 0.24 1.44 3.263 6.00 19.58
VDDSHV5 1.8 / 3.3 V +/-5% J32 0.24 1.09 3.320 4.55 15.12
VDDSHV6 1.8 / 3.3 V +/-5% J34 0.24 4.50 3.318 18.75 62.21
            Total 641.25


OPP Power Comparison[edit]

Software : LINUXEZSDK-AM335X
Use Case : Dhrystone Benckmark, Linux Matrix GUI
CORE OPP : DDR 200 MHz, L3 200 MHz, L4 100 MHz

MPU OPP Dhrystone [mW] Linux Matrix GUI [mW]
All Power Rails VDD_MPU only All Power Rails VDD_MPU only
OPP50 275 MHz 522 104 462 44
OPP100 500 MHz 670 249 527 106
OPP120 600 MHz 777 355 575 153
TURBO 720 MHz 889 465 625 202


References[edit]

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