ATA6613 ATMEL Corporation, ATA6613 Datasheet - Page 65
ATA6613
Manufacturer Part Number
ATA6613
Description
Ata6613
Manufacturer
ATMEL Corporation
Datasheet
1.ATA6613.pdf
(362 pages)
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6.7.6
6.7.7
9111C–AUTO–02/08
Standby Mode
Power Reduction Register
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.
Table 6-19.
Notes:
The Power Reduction Register, PRR, provides a method to stop the clock to individual peripher-
als to reduce power consumption. The current state of the peripheral is frozen and the I/O
registers can not be read or written. Resources used by the peripheral when stopping the clock
will remain occupied, hence the peripheral should in most cases be disabled before stopping the
clock. Waking up a module, which is done by clearing the bit in PRR, puts the module in the
same state as before shutdown.
Module shutdown can be used in Idle mode and Active mode to significantly reduce the overall
power consumption. See
sleep modes, the clock is already stopped.
Sleep Mode
Idle
ADC Noise
Reduction
Power-down
Power-save
Standby
1. Only recommended with external crystal or resonator selected as clock source.
2. If Timer/Counter2 is running in asynchronous mode.
3. For INT1 and INT0, only level interrupt.
(1)
Active Clock Domains and Wake-up Sources in the Different Sleep Modes
Active Clock Domains
“Power-down Supply Current” on page 330
X
X
X
X
X
X
Oscillators
X
X
X
X
X
X
(2)
(2)
X
X
X
X
X
(3)
(3)
(3)
(3)
ATA6612/ATA6613
X
X
X
X
X
Wake-up Sources
for examples. In all other
X
X
X
X
X
X
X
X
X
X
X
X
X
65
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