Data Sheet

948
Atmel | SMART SAM D21 [DATASHEET]
Atmel-42181G–SAM-D21_Datasheet–09/2015
z BOD33 disabled
In this default conditions, the power consumption I
default
is measured.
Measurements do not include consumption of clock source (ex: DFLL48M or FDPLL96M) and CPU. However no CPU
activity is required during all states (Suspend, IDLE, Data transfer).
Measurements have been done with an USB cable of 1.5m.
For USB Device mode, measurements include the maximum consumption (200 µA) through pull-up resistor on the D+
line for USB attach. This value depends on USB Host characteristic.
Operating modes:
z Run the USB Device/Host states in regards of the Universal Serial Bus (USB) v2.0 standard.
USB power consumption is provided in the following tables.
Table 36-12. Typical USB Device Full Speed mode Current Consumption
USB Device state Conditions Typ. Units
Suspend
GCLK_USB is off, using USB wakeup asynchronous interrupt.
USB bus in suspend mode.
201 μA
Suspend
GCLK_USB is on.
USB bus in suspend mode.
0.83 mA
IDLE
Start Of Frame is running.
No packet transferred.
1.17 mA
Active OUT
Start Of Frame is running.
Bulk OUT on 100% bandwidth.
2.17 mA
Active IN
Start Of Frame is running.
Bulk IN on 100% bandwidth.
10.3 mA
Table 36-13. Typical USB Host Full Speed mode Current Consumption
USB Device state Conditions Typ. Units
Wait connection
GCLK_USB is off, using USB wakeup asynchronous interrupt.
USB bus not connected.
0.10 µA
Wait connection
GCLK_USB is on.
USB bus not connected.
0.19 mA
Suspend
GCLK_USB is off, using USB wakeup asynchronous interrupt.
USB bus in suspend mode.
201 μA
Suspend
GCLK_USB is on.
USB bus in suspend mode.
0.83 mA