Three different sleep modes can be enabled to reduce the power consumption.
1 ’. The power consumption is dependent on the
enabled functionality. | |
1 ’. |
Refer to the Wake-up Time section for information on how the wake-up time is affected by the different sleep modes.
Peripheral | Active in Sleep Mode | |||
---|---|---|---|---|
Idle | Standby | Power-Down | ||
HTLLEN=0 | HTLLEN=1 | |||
CPU | - | - | - | - |
RTC | X | X(1,2) | X(2) | X(2) |
WDT | X | X | X | X |
BOD | X | X | X | X |
EVSYS | X | X | X | X |
CCL | X | X(1) | - | - |
ACn | ||||
ADCn | ||||
DACn | ||||
OPAMP | ||||
ZCDn | ||||
TCAn | ||||
TCBn | ||||
All other peripherals | X | - | - | - |
In Standby sleep mode, only the RTC functionality requires the RUNSTDBY bit to be set.
In Power-Down sleep mode, only the PIT functionality is available.
Clock Source | Active in Sleep Mode | |||
---|---|---|---|---|
Idle | Standby | Power-Down | ||
HTLLEN=0 | HTLLEN=1 | |||
Main clock source | X | X(1) | - | - |
RTC clock source | X | X(1,2) | X(2) | X(2) |
WDT oscillator | X | X | X | X |
BOD oscillator(3) | X | X | X | X |
CCL clock source | X | X(1) | - | - |
TCD clock source | X | - | - | - |
In Standby sleep mode, only the RTC functionality requires the RUNSTDBY bit to be set.
In Power-Down sleep mode, only the PIT functionality is available.
Wake-Up Sources | Active in Sleep Mode | |||
---|---|---|---|---|
Idle | Standby | Power-Down | ||
HTLLEN=0 | HTLLEN=1 | |||
PORT Pin interrupt | X | X | X(1) | X(1) |
BOD VLM interrupt | X | X | X | X |
MVIO interrupts | X | X | X | X |
RTC interrupts | X | X(2,3) | X(3) | X(3) |
TWI Address Match interrupt | X | X | X | - |
CCL interrupts | X | X | X(4) | - |
USART Start-Of-Frame interrupt | - | X | - | - |
TCAn interrupts | X | X(2) | - | - |
TCBn interrupts | ||||
ADCn interrupts | ||||
ACn interrupts | ||||
ZCD interrupts | ||||
All other interrupts | X | - | - | - |
In Standby sleep mode, only the RTC functionality requires the RUNSTDBY bit to be set.
In Power-Down sleep mode, only the PIT functionality is available.
0x0
and EDGEDET=0x0
in the
CCL.LUTnCTRLA register).