Datasheet

– XOSC (crystal oscillator) stopped
– XOSC32K (32 kHz crystal oscillator) running with external 32kHz crystal
– OSC8M at 8MHz
• Clocks
– OSC8M used as main clock source
– CPU, AHB and APBn clocks undivided
• The following AHB module clocks are running: NVMCTRL, HPB2 bridge, HPB1 bridge, HPB0
bridge
– All other AHB clocks stopped
• The following peripheral clocks running: PM, SYSCTRL
– All other peripheral clocks stopped
• I/Os are inactive with internal pull-up
• CPU in IDLE0 mode
• Cache enabled
• BOD33 disabled
In this default conditions, the power consumption I
default
is measured.
Operating mode for each peripheral in turn:
• Configure and enable the peripheral GCLK (When relevant, see conditions)
• Unmask the peripheral clock
• Enable the peripheral (when relevant)
• Set CPU in IDLE0 mode
• Measurement I
periph
• Wake-up CPU via EIC (async: level detection, filtering disabled)
• Disable the peripheral (when relevant)
• Mask the peripheral clock
• Disable the peripheral GCLK (when relevant, see conditions)
Each peripheral power consumption provided in table x.y is the value (I
periph
- I
default
), using the same
measurement method as for global power consumption measurement
Table 37-12. 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
ACx Both f
GCLK
=8MHz, Enable both COMP 31.3 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
SAM D21 Family
Electrical Characteristics
© 2018 Microchip Technology Inc.
Datasheet Complete
DS40001882D-page 993