Datasheet

8024A–AVR–04/08

ATmega8HVA/16HVA

• Bit 3 - PRSPI: Power Reduction Serial Peripheral Interface

Writing 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 reinitialized to ensure proper

operation.

• Bit 2 - PRTIM1: Power Reduction Timer/Counter1

Writing a logic one to this bit shuts down the Timer/Counter1 module. When the Timer/Counter1

is enabled, operation will continue like before the shutdown.

• Bit 1 - PRTIM0: Power Reduction Timer/Counter0

Writing a logic one to this bit shuts down the Timer/Counter0 module. When the Timer/Counter0

is enabled, operation will continue like before the shutdown.

• Bit 0 - PRVADC: Power Reduction V-ADC

Writing a logic one to this bit shuts down the V-ADC. Before writing the PRVADC bit, make sure

that the VADEN bit is cleared to minimize the power consumption.

Note: V-ADC control registers can be updated even if the PRVADC bit is set.