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參數(shù)資料
| 型號： | MB9AF312NPF |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 32-BIT, FLASH, 40 MHz, RISC MICROCONTROLLER, PQFP100 |
| 封裝： | 0.65 MM PITCH, PLASTIC, LQFP-100 |
| 文件頁數(shù)： | 50/114頁 |
| 文件大小： | 1357K |
| 代理商： | MB9AF312NPF |
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ATmega48PA/88PA/168PA [DATASHEET]
9223F–AVR–04/14
40
10.11.3 PRR – Power Reduction Register
Bit 7 – PRTWI: Power Reduction TWI
Writing a logic one to this bit shuts down the TWI by stopping the clock to the module. When waking up the TWI again, the
TWI should be re initialized to ensure proper operation.
Bit 6 – PRTIM2: Power Reduction Timer/Counter2
Writing a logic one to this bit shuts down the Timer/Counter2 module in synchronous mode (AS2 is 0). When the
Timer/Counter2 is enabled, operation will continue like before the shutdown.
Bit 5 – 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 4 – Reserved
This bit is reserved in Atmel ATmega48PA/88PA/168PA and will always read as zero.
Bit 3 – 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 2 – PRSPI: Power Reduction Serial Peripheral Interface
If using debugWIRE on-chip debug system, this bit should not be written to one.
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 1 – PRUSART0: Power Reduction USART0
Writing a logic one to this bit shuts down the USART by stopping the clock to the module. When waking up the USART
again, the USART should be re initialized to ensure proper operation.
Bit 0 – PRADC: Power Reduction ADC
Writing a logic one to this bit shuts down the ADC. The ADC must be disabled before shut down. The analog comparator
cannot use the ADC input MUX when the ADC is shut down.
Bit
7
6
543
2
1
0
PRTWI
PRTIM2
PRTIM0
–
PRTIM1
PRSPI
PRUSART0
PRADC
PRR
Read/Write
R/W
R
R/W
Initial Value
0
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