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ATSAM3N1BA-AU

ARM-based Flash MCU

Atmel Corporation 

SAM3N Summary

5.5.4

Low Power Mode Summary Table

The modes detailed above are the main low power modes. Each part can be set to on or off sep-

arately and wake up sources can be individually configured. Table 5-1 below shows a summary

of the configurations of the low power modes.

Table 5-1. Low Power Mode Configuration Summary

Mode

SUPC,

32 kHz

Oscillator

RTC RTT

Backup

Registers,

POR

(Backup

Region)

Core

Memory

Regulator Peripherals

Mode Entry

PIO State

Potential Wake Up Core at while in Low PIO State Consumption Wake Up

Sources

Wake Up Power Mode at Wake Up

(2) (3)

Time(1)

Backup

Mode

ON

OFF

OFF

WFE

WUP0-15 pins

BOD alarm

(Not powered)

+SLEEPDEEP

bit = 1

RTC alarm

RTT alarm

Reset

Previous

state saved

PIOA &

PIOB &

PIOC

Inputs with

pull ups

3 µA typ(4)

< 0.1 ms

Wait

Mode

ON

WFE

Any Event from: Fast

ON

Powered

(Not clocked)

+SLEEPDEEP

bit = 0

startup through

WUP0-15 pins

RTC alarm

Clocked

back

Previous

state saved

Unchanged 5 µA/15 µA (5) < 10 µs

+LPM bit = 1 RTT alarm

Sleep

Mode

Notes:

Entry mode = WFI

Interrupt Only; Entry

mode = WFE Any

WFE or WFI Enabled Interrupt

ON

ON

Powered(7) +SLEEPDEEP and/or Any Event

(Not clocked)

bit = 0

from: Fast start-up

Clocked

back

Previous

state saved

Unchanged (6)

(6)

+LPM bit = 0 through WUP0-15

pins

RTC alarm

RTT alarm

1. When considering wake-up time, the time required to start the PLL is not taken into account. Once started, the device works

with the 4/8/12 MHz Fast RC oscillator. The user has to add the PLL start-up time if it is needed in the system. The wake-up

time is defined as the time taken for wake up until the first instruction is fetched.

2. The external loads on PIOs are not taken into account in the calculation.

3. Supply Monitor current consumption is not included.

4. Total Current consumption.

5. 5 µA on VDDCORE, 15 µA for total current consumption (using internal voltage regulator), 8 µA for total current consumption

(without using internal voltage regulator).

6. Depends on MCK frequency.

7. In this mode the core is supplied and not clocked but some peripherals can be clocked.

21

11011BS–ATARM–22-Feb-12

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