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ATMEGA16-16PC Datasheet(PDF) 32 Page - ATMEL Corporation |
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ATMEGA16-16PC Datasheet(HTML) 32 Page - ATMEL Corporation |
32 / 315 page 32 ATmega16(L) 2466E–AVR–10/02 Asynchronous Timer should be considered undefined after wake-up in Power-save mode if AS2 is 0. This sleep mode basically halts all clocks except clk ASY, allowing operation only of asyn- chronous modules, including Timer/Counter2 if clocked asynchronously. 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. Extended Standby Mode When the SM2..0 bits are 111 and an external crystal/resonator clock option is selected, the SLEEP instruction makes the MCU enter Extended Standby mode. This mode is identical to Power-save mode with the exception that the Oscillator is kept running. From Extended Standby mode, the device wakes up in six clock cycles.. Notes: 1. External Crystal or resonator selected as clock source. 2. If AS 2 bit in ASSR is set. 3. Only INT2 or level interrupt INT1 and INT0. Table 14. Active Clock Domains and Wake Up Sources in the Different Sleep Modes Active Clock domains Oscillators Wake-up Sources Sleep Mode clkCPU clkFLASH clkIO clkADC clkASY Main Clock Source Enabled Timer Osc. Enabled INT2 INT1 INT0 TWI Address Match Timer 2 SPM / EEPROM Ready ADC Other I/O Idle X X X X X (2) XX X X X X ADC Noise Redu- ction XX X X (2) X (3) XX X X Power Down X (3) X Power Save X (2) X (2) X (3) XX (2) Standby (1) XX (3) X Exten- ded Standby (1) X (2) XX (2) X (3) XX (2) |
Similar Part No. - ATMEGA16-16PC |
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