Datasheet

58
2549O–AVR–05/12
ATmega640/1280/1281/2560/2561
• Bit 2 - PRUSART3: Power Reduction USART3
W riting a logic one to this bit shuts down the USART3 by stopping the clock to the module.
W hen waking up the USART3 again, the USART3 should be re initialized to ensure proper
operation.
• Bit 1 - PRUSART2: Power Reduction USART2
W riting a logic one to this bit shuts down the USART2 by stopping the clock to the module.
W hen waking up the USART2 again, the USART2 should be re initialized to ensure proper
operation.
• Bit 0 - PRUSART1: Power Reduction USART1
W riting a logic one to this bit shuts down the USART1 by stopping the clock to the module.
W hen waking up the USART1 again, the USART1 should be re initialized to ensure proper
operation.