ATMEGA329P_1 datasheet(38/385 Pages) ATMEL

Nome de Peças	ATMEGA329P

Descrição Electrónicos	8-bit Microcontroller with 32K Bytes In-System Programmable Flash

PDF	385 Pages

Scroll/Zoom	100%

Fabricante Electrônico	ATMEL [ATMEL Corporation]

Página de início	http://www.atmel.com

Logo

38 / 385 page

38

8021E–AVR–07/09

ATmega329P/3290P

USI start condition detection, and the Watchdog continue operating (if enabled). Only an Exter-

nal Reset, a Watchdog Reset, a Brown-out Reset, USI start condition interrupt, an external level

interrupt on INT0, or a pin change interrupt can wake up the MCU. This sleep mode basically

halts all generated clocks, allowing operation of asynchronous modules only.

Note that if a level triggered interrupt is used for wake-up from Power-down mode, the changed

level must be held for some time to wake up the MCU. Refer to ”External Interrupts” on page 57

for details.

When waking up from Power-down mode, there is a delay from the wake-up condition occurs

until the wake-up becomes effective. This allows the clock to restart and become stable after

having been stopped. The wake-up period is defined by the same CKSEL Fuses that define the

Reset Time-out period, as described in ”Clock Sources” on page 28.

9.6

Power-save Mode

When the SM2..0 bits are written to 011, the SLEEP instruction makes the MCU enter Power-

save mode. This mode is identical to Power-down, with one exception:

If Timer/Counter2 and/or the LCD controller are enabled, they will keep running during sleep.

The device can wake up from either Timer Overflow or Output Compare event from

Timer/Counter2 if the corresponding Timer/Counter2 interrupt enable bits are set in TIMSK2,

and the Global Interrupt Enable bit in SREG is set. It can also wake up from an LCD controller

interrupt.

If neither Timer/Counter2 nor the LCD controller is running, Power-down mode is recommended

instead of Power-save mode.

The LCD controller and Timer/Counter2 can be clocked both synchronously and asynchronously

in Power-save mode. The clock source for the two modules can be selected independent of

each other. If neither the LCD controller nor the Timer/Counter2 is using the asynchronous

clock, the Timer/Counter Oscillator is stopped during sleep. If neither the LCD controller nor the

Timer/Counter2 is using the synchronous clock, the clock source is stopped during sleep. Note

that even if the synchronous clock is running in Power-save, this clock is only available for the

LCD controller and Timer/Counter2.

9.7

Standby Mode

When the SM2..0 bits are 110 and an external crystal/resonator clock option is selected, the

SLEEP instruction makes the MCU enter Standby mode. This mode is identical to Power-down

with the exception that the Oscillator is kept running. From Standby mode, the device wakes up

in six clock cycles.

9.8

Power Reduction Register

The Power Reduction Register (PRR), see ”PRR – Power Reduction Register” on page 42, pro-

vides a method to stop the clock to individual peripherals to reduce power consumption. The

current state of the peripheral is frozen and the I/O registers inaccessible. Resources used by

the peripheral when stopping the clock will remain occupied so the peripheral should be disabled

before stopping the clock. Waking up a module, which is done by clearing the bit in PRR, puts

the module in the same state as before shutdown.

Module shutdown can be used in IDLE mode and active mode to reduce the overall power con-

sumption. In all other sleep modes, the clock is already stopped.

Nº de peça semelhante - ATMEGA329P_1

Fabricante Electrônico	Nome de Peças	Folha de dados	Descrição Electrónicos
ATMEL Corporation	ATMEGA329P	734Kb / 427P	High Performance, Low Power Atmel

More results

Descrição semelhante - ATMEGA329P_1

Fabricante Electrônico	Nome de Peças	Folha de dados	Descrição Electrónicos
ATMEL Corporation	ATMEGA325P	346Kb / 25P	8-bit Microcontroller with 32K Bytes In-System Programmable Flash
	ATMEGA325P	3Mb / 336P	8-bit Microcontroller with 32K Bytes In-System Programmable Flash
	ATMEGA329P	471Kb / 25P	8-bit Microcontroller with 32K Bytes In-System Programmable Flash
	ATMEGA325P	332Kb / 22P	8-bit Microcontroller with 32K Bytes In-System Programmable Flash
	ATMEGA324PA	546Kb / 24P	8-bit Microcontroller with 32K Bytes In-System Programmable Flash
	ATMEGA32A	427Kb / 18P	8-bit Microcontroller with 32K Bytes In-System Programmable Flash
	ATMEGA32	5Mb / 346P	8-bit Microcontroller with 32K Bytes In-System Programmable Flash
	ATMEGA32A	518Kb / 18P	8-bit Microcontroller with 32K Bytes In-System Programmable Flash
	ATMEGA328P	5Mb / 345P	8-bit Microcontroller with 32K Bytes In-System Programmable Flash
	ATMEGA32A	6Mb / 352P	8-bit Microcontroller with 32K Bytes In-System Programmable Flash

More results

ATMEGA329P Folha de dados(PDF) 38 Page - ATMEL Corporation

ATMEGA329P Folha de dados(HTML) 38 Page - ATMEL Corporation

Nº de peça semelhante - ATMEGA329P_1

Descrição semelhante - ATMEGA329P_1

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Folha de dados Download

Ligação URL