Data Sheet

947
Atmel | SMART SAM D21 [DATASHEET]
Atmel-42181G–SAM-D21_Datasheet–09/2015
Notes: 1. AllAll TCs from 4 to 7 share the same power consumption values.
2. All SERCOMs from 0 to 5 share the same power consumption values.
3. The value includes the power consumption of the FDPLL.
4. The value includes the power consumption of the R/W access to the RAM.
36.7.2 USB Peripheral Power Consumption
Default conditions, except where noted:
z Operating conditions
z V
VDDIN
= 3.3V
z Oscillators
z XOSC32K (32kHz crystal oscillator) running with external 32kHz crystal in USB Host mode
z Clocks
z USB Device mode: DFLL48M in USB recovery mode (Crystal less)
z USB Host mode: DFLL48M in closed loop with XOSC32K (32kHz crystal oscillator) running with external
32kHz crystal
z CPU, AHB and APBn clocks undivided
z The following AHB module clocks are running: NVMCTRL, HPB2 bridge, HPB1 bridge, HPB0 bridge
z All other AHB clocks stopped
z I/Os are inactive with internal pull-up
z CPU in IDLE0 mode
z Cache enabled
Table 36-11. Typical Peripheral Current Consumption
Peripheral Conditions Typ. Units
RTC f
GCLK_RTC
= 32kHz, 32bit counter mode 7.4 µA
WDT f
GCLK_WDT
=32kHz, normal mode with EW 5.5 µA
AC Both f
GCLK
=8MHz, Enable both COMP 31.3 µA
TCx
(1)
f
GCLK
=8MHz, Enable + COUNTER in 8bit mode 50 µA
TCC2 f
GCLK
=8MHz, Enable + COUNTER 95.5 µA
TCC1 f
GCLK
=8MHz, Enable + COUNTER 167.5 µA
TCC0 f
GCLK
=8MHz, Enable + COUNTER 180.3 µA
SERCOMx.
I2CM
(2)
f
GCLK
=8MHz, Enable 69.7 µA
SERCOMx.
I2CS
f
GCLK
=8MHz, Enable 29.2 µA
SERCOMx.
SPI
f
GCLK
=8MHz, Enable 64.6 µA
SERCOMx.
USART
f
GCLK
=8MHz, Enable 65.5 µA
I2S
(3)
f
GCLK_I2S_0
=12.288MHz with source FDPLL with
f
FDPLL
=49,152MHz
26.4 µA
DMAC
(4)
RAM to RAM transfer 399.5 µA