Datasheet

19
SAM4E [DATASHEET]
11157D–ATARM–12-Jun-14
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 separately and wake-up sources can be
individually configured. Table 5-1 below provides the configuration summary of the low-power modes.
Notes: 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 consumption is 1 μA typical (VDDIO = 1.8 V at 25°C).
5. Power consumption on VDDCORE. For total current consumption, please refer to the “Electrical Characteristics” section of this datasheet.
6. Depends on MCK frequency.
7. In this mode the core is supplied and not clocked but some peripherals can be clocked.
Table 5-1. Low-power Mode Configuration Summary
Mode
SUPC,32 kHzOscillator,
RTC, RTT Backup Registers,
POR (Backup Region) Regulator
Core
Memory
Peripherals Mode Entry
Potential
Wake-Up Sources
Core at
Wake-
Up
PIO State
while in Low-
Power Mode
PIO State
at
Wake Up
Consumption
(2) (3)
Wake-
up
Time
(1
)
Backup Mode ON OFF
OFF
(Not powered)
VROFF = 1
or
WFE + SLEEPDEEP = 1
WUP0-15 pins
SM alarm
RTC alarm
RTT alarm
Reset
Previous state
saved
PIOA & PIOB
& PIOC&
PIOD &
PIOE
Inputs with
pull-ups
1µA typ
(4)
< 1 ms
Wait Mode
w/Flash in
Standby
Mode
ON ON
Powered
(Not clocked)
WAITMODE = 1 +
FLPM = 0
or
WFE + SLEEPDEEP = 0
+ LPM = 1 + FLPM = 0
Any Event from:
Fast startup through
WUP0-15
RTC alarm
RTT alarm
USB wake-up
Clocked
back
Previous
state saved
Unchanged 56 µA
(5)
10 us
Wait Mode
w/Flash in
Deep Power-
down Mode
ON ON
Powered
(Not clocked)
WAITMODE = 1
+ FLPM = 1
or
WFE + SLEEPDEEP = 0
+ LPM = 1 + FLPM = 1
Any Event from:
Fast startup through
WUP0-15
RTC alarm
RTT alarm
USB wake-up
Clocked
back
Previous
state saved
Unchanged 46.6 µA
<
100 µs
Sleep Mode ON ON
Powered
(7)
(Not clocked)
WFE
or
WFI + SLEEPDEEP = 0
+ LPM = 0
Entry mode =WFI
Interrupt Only;
Entry mode =WFE Any
Enabled Interrupt
and/or Any Event from:
Fast start-up through
WUP0-15
RTC alarm
RTT alarm
USB wake-up
Clocked
back
Previous state
saved
Unchanged
(6) (6)