Datasheet

27
SAM3X / SAM3A [DATASHEET]
Atmel-11057C-ATARM-SAM3X-SAM3A-Datasheet_23-Mar-15
Notes: 1. SUPC, 32 kHz Oscillator, RTC, RTT, GPBR, POR.
2. The external loads on PIOs are not taken into account in the calculation.
3. BOD current consumption is not included.
4. When considering the 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 startup 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.
5. Current consumption on VDDBU.
6. 18.4 µA on VDDCORE, 26.6 µA for total current consumption (using internal voltage regulator).
7. Depends on MCK frequency. 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
VDDBU
Region
(1)
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
(4)
Backup Mode ON
OFF
SHDN = 0
OFF
(not powered)
WFE
+ SLEEPDEEP = 1
FWUP pin
Pins WKUP0–15
BOD alarm
RTC alarm
RTT alarm
Reset Previous state saved
PIOA &
PIOB &
PIOC &
PIOD &
PIOE &
PIOF
Inputs with pull-ups
2.5 µA typ
(5)
< 0.5 ms
Wait Mode ON
ON
SHDN = 1
Powered
(not clocked)
WFE
+ SLEEPDEEP = 0
+ LPM = 1
Any event from Fast Startup:
- through pins WKUP0–15
- RTC alarm
- RTT alarm
- USB wake-up
Clocked back Previous state saved Unchanged 18.4 µA/26.6 µA
(6)
< 10 µs
Sleep Mode ON
ON
SHDN = 1
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 Startup:
- through pins WKUP0–15
- RTC alarm
- RTT alarm
- USB wake-up
Clocked back Previous state saved Unchanged
(7) (7)