ATTINY412 datasheet(72/479 Pages) MICROCHIP

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11.3.2

Operation

11.3.2.1 Sleep Modes

In addition to Active mode, there are three different sleep modes, with decreasing power consumption

and functionality.

Idle

The CPU stops executing code, no peripherals are disabled.

All interrupt sources can wake up the device.

Standby

The user can configure peripherals to be enabled or not, using the respective RUNSTBY bit.

This means that the power consumption is highly dependent on what functionality is enabled,

and thus may vary between the Idle and Power Down levels.

SleepWalking is available for the ADC module.

The wake-up sources are Pin interrupts, TWI address match, UART Start-of-Frame interrupt

(if USART is enabled to run in Standby), RTC interrupt (if RTC enabled to run in Standby),

and TCB interrupt.

Power

Down

Only the WDT and the PIT (component of the RTC) are active.

The only wake-up sources are the pin change interrupt and TWI address match.

Table 11-2. Sleep Mode Activity Overview

Group

Peripheral

Active in Sleep Mode

Clock

Idle

Standby

Power Down

Active Clock

Domain

CPU

CLK_CPU

Peripherals

CLK_PER

RTC

CLK_RTC

ADC

CLK_PER

PIT (RTC)

CLK_RTC

WDT

CLK_WDT

Oscillators

Main Clock

Source

RTC Clock

Source

WDT Oscillator

Wake-Up

Sources

INTn and pin change

TWI address match

Periodic Interrupt Timer

UART start of frame

ADC window

RTC interrupt

All other interrupts

Note:

ATtiny212/412

Datasheet Preliminary

DS40001911A-page 72

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