74.10.3.3 Power Consumption in Idle and Ultra Low-Power Modes

  • Figure 74-56 and Figure 74-57 provide the SAMA7G5 average power consumption in Idle, ULP0, ULP1 and ULP2 modes versus temperature measured on a few typical devices. They do not provide maximum power consumption specifications.
  • All power supply inputs are powered within their operating range and in particular VDDCORE = 1.15V, VDDCPU = 1.15V.
  • There is no consumption on the device I/Os. To reach the best possible power consumption figures, it is important to set each I/O of the device to an appropriate state (pull-up/pull-down, etc.) with respect to the external components connected to these I/Os.
  • USB transceivers are disabled.
  • All peripheral clocks are disabled.
  • Current measurement is as shown in the following figure.
Figure 74-55. Current Measurement in ULP0, ULP1, ULP2 and Idle Modes
Table 74-79. Typical Current Consumption in Idle, ULP0, ULP1, ULP2 Modes
Low-Power Mode IDDCPU/IDDCORE (mW)
TJ=-40°C TJ= 25°C TJ=50°C TJ=70°C TJ=85°C TJ=105°C TJ=125°C
Idle@200 MHz 30 115 42 123 56 130 75 140 95 151 132 172 180 220
ULP1 1 8 13 9 25 20 46 38 66 55 103 84 155 133
ULP1@1.05V 0.7 7 11 6 13 16 24 24 34 32 54 50 81 75
ULP2 0 8 0 9 0 20 0 38 0 55 0 84 0 133
ULP0@12 MHz 1 8 14 9 25 20 46 38 66 55 103 84 155 133
ULP0@32 kHz 1 8 13 9 25 20 46 38 66 55 103 84 155 133

Figure 74-56 and Figure 74-57 plot the power consumption of the device in ULP0, ULP1, ULP2 and Idle modes. They show the current consumption in VDDCPU, VDDCORE and VDDIN33:

Power (mW) = IDDCPU x 1.15V + IDDCORE x 1.15V + PIN33

with IDDCPU and IDDCORE as measured in the above table.

2.2 mW is shown for PIN33 (see Table 74-80 for ULP0, ULP1 and ULP2).

150 mW is shown for PIN33 in Idle mode (application-dependent).

Figure 74-56. Typical Power Consumption in Idle Mode vs Junction Temperature
Figure 74-57. Typical Power Consumption in ULP0, ULP1 and ULP2 Modes vs Junction Temperature

The following table provides the specifications for ULP1 mode current consumption on VDDCORE, VDDCPU and VDDIN33.

Table 74-80. Power Consumption in ULP1 Mode
Symbol Parameter Conditions Min Max Unit
PCORE_CPU Power consumption on VDDCORE and VDDCPU

VDDCORE = 1.15V

VDDCPU = 1.25V

Tj = 105°C

 – 300 mW

VDDCORE = 1.15V

VDDCPU = 1.15V

Tj = 105°C

 – 250 mW

VDDCORE = 1.05V

VDDCPU = 1.05V

Tj = 105°C

 – 175 mW

VDDCORE = 1.15V

VDDCPU = 1.15V

Tj = 125°C

 – 360 mW

VDDCORE = 1.05V

VDDCPU = 1.05V

Tj = 125°C

 – 250 mW
PIN33 Power consumption on VDDIN33 VDDIN33 = 3.3V – 2.2 mW