12.11.5 Power Reduction Register 2

Name: PRR2
Offset: 0x63
Reset: 0x00
Property: -

Bit 76543210 
     PRPTCPRUSART2PRSPI1PRTWI1 
Access R/WR/WR/WR/W 
Reset 0000 

Bit 3 – PRPTC Power Reduction PTC

Writing a logic one to this bit shuts down the PTC module. When the PTC is enabled, operation will continue like before the shutdown.

Bit 2 – PRUSART2 Power Reduction USART2

Writing a logic one to this bit shuts down the USART2 by stopping the clock to the module. When waking up the USART2 again, the USART2 should be re initialized to ensure proper operation.

Bit 1 – PRSPI1 Power Reduction Serial Peripheral Interface

Writing a logic one to this bit shuts down the Serial Peripheral Interface by stopping the clock to the module. When waking up the SPI again, the SPI should be re initialized to ensure proper operation.

Bit 0 – PRTWI1 Power Reduction TWI1

Writing a logic one to this bit shuts down the TWI1 by stopping the clock to the module. When waking up the TWI1 again, the TWI1 should be re initialized to ensure proper operation.