SAM3X8E Atmel Corporation, SAM3X8E Datasheet - Page 29
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SAM3X8E
Manufacturer Part Number
SAM3X8E
Description
Manufacturer
Atmel Corporation
- Current page: 29 of 1465
- Download datasheet (26Mb)
5.5.4
Table 5-1.
Notes:
11057A–ATARM–17-Feb-12
Backup
Mode
Sleep
Mode
Mode
Mode
Wait
Region
VDDBU
1. SUPC, 32 kHz Oscillator, RTC, RTT, Backup Registers, 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
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.
ON
ON
ON
Low Power Mode Summary Table
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.
()
Low Power Mode Configuration Summary
Regulator
SHDN =0
SHDN =1
SHDN =1
OFF
ON
ON
(Not powered)
Peripherals
(Not clocked)
(Not clocked)
Powered
The processor can be awakened from an interrupt if WFI instruction of the Cortex M3 is used, or
from an event if the WFE instruction is used to enter this mode.
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.
of the configurations of the low power modes..
Memory
Powered
Core
OFF
(7)
+SLEEPDEEP
+SLEEPDEEP
+SLEEPDEEP
+LPM bit = 1
+LPM bit = 0
Mode Entry
WFE or WFI
bit = 1
bit = 0
bit = 0
WFE
WFE
FWUP pin
WKUP0-15 pins
BOD alarm
RTC alarm
RTT alarm
Any Event from: Fast
startup through
WKUP0-15 pins
RTC alarm
RTT alarm
USB wake-up
Entry mode = WFI
Interrupt Only;
Entry mode = WFE
Any Enabled Interrupt
and/or Any Event from
Fast start-up through
WKUP0-15 pins
RTC alarm
RTT alarm
USB wake-up
Potential Wake-up
Sources
Reset
Clocked
back
Clocked
back
Wake-up
Core at
Previous
state saved
Previous
state saved
Previous
state saved
while in Low
Power Mode
PIO State
Table 5-1
PIOA &
PIOB &
PIOC &
PIOD &
PIOE &
PIOF
Inputs with
pull-ups
Unchanged 18.4 μA/26.6 μA
Unchanged
at Wake-up
PIO State
below shows a summary
2.5 μA typ
(7)
Consumption
SAM3X/A
(2) (3)
(5)
(6)
Wake-up
< 0.5 ms
< 10 μs
(7)
Time
(4)
29
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