A clarification has been made to Table 12-2 Sleep Mode Activity Overview, where
the single table has been split into three separate tables for clarity. Functional
changes are shown in bold.
Table 1. Sleep Mode Activity Overview for
Peripherals
Peripheral |
Active in Sleep Mode |
Idle |
Standby |
Power-Down |
CPU |
- |
- |
- |
RTC |
X |
X(1) |
X(2) |
WDT |
X |
X |
X |
BOD |
X |
X |
X |
EVSYS |
X |
X |
X |
CCL |
X |
X(1) |
- |
ACn |
ADCn/PTC |
TCBn |
All other peripherals |
X |
- |
- |
Notes:
- 1.The RUNSTBY bit of the
corresponding peripheral must be set to enter the active state.
- 2.PIT only.
Table 2. Sleep Mode Activity Overview for
Clock Sources
Clock Source |
Active in Sleep Mode |
Idle |
Standby |
Power-Down |
Main clock source |
X |
X(1) |
- |
RTC clock source |
X |
X(1) |
X(2) |
WDT oscillator |
X |
X |
X |
BOD oscillator(3) |
X |
X |
X |
CCL clock source |
X |
X(1) |
- |
Notes:
- 1.The RUNSTBY bit of the
corresponding peripheral must be set to enter the active state.
- 2.PIT only.
- 3.The BOD oscillator runs only
in Sampled mode.
Table 3. Sleep Mode Wake-Up Sources
Wake-Up Sources |
Active in Sleep Mode |
Idle |
Standby |
Power-Down |
PORT Pin Interrupt |
X |
X |
X(1) |
BOD VLM interrupt |
X |
X |
X |
RTC interrupts |
X |
X(2) |
X(3) |
TWIn Address Match interrupt |
X |
X |
X |
USARTn Start-of-Frame interrupt |
- |
X |
- |
TCBn interrupts |
X |
X(2) |
- |
ADCn/PTC interrupts |
X |
X(2) |
- |
ACn interrupts |
X |
X(4) |
- |
All other interrupts |
X |
- |
- |
Notes:
- 1.The I/O pin must be configured
according to Asynchronous Sensing Pin Properties in the PORT
section.
- 2.The RUNSTBY bit of the
corresponding peripheral must be set to enter the active state.
- 3.PIT only.
- 4.When the RUNSTDBY bit is set,
the AC will operate without updating its Status register or triggering
interrupts. If another peripheral has requested CLK_PER, the AC will use the
clock to update the Status register and trigger interrupts.