AT32UC3C2512C Automotive Atmel Corporation, AT32UC3C2512C Automotive Datasheet - Page 34
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AT32UC3C2512C Automotive
Manufacturer Part Number
AT32UC3C2512C Automotive
Description
Manufacturer
Atmel Corporation
Datasheets
1.AT90CAN128_AUTOMOTIVE.pdf
(225 pages)
2.AT32UC3C0512C_AUTOMOTIVE.pdf
(1312 pages)
3.AT32UC3C0512C_AUTOMOTIVE.pdf
(107 pages)
- AT90CAN128_AUTOMOTIVE PDF datasheet
- AT32UC3C0512C_AUTOMOTIVE PDF datasheet #2
- AT32UC3C0512C_AUTOMOTIVE PDF datasheet #3
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8. Power Management and Sleep Modes
8.1
8.2
34
Sleep Modes
Idle Mode
Atmel ATtiny24/44/84 [Preliminary]
Sleep modes enable the application to shut down unused modules in the MCU, thereby saving
power. The Atmel
consumption to the application’s requirements.
Figure 7-1 on page 25
their distribution. The figure is helpful in selecting an appropriate sleep mode.
the different sleep modes and their wake up sources
Table 8-1.
Note:
To enter any of the three sleep modes, the SE bit in MCUCR must be written to logic one and
a SLEEP instruction must be executed. The SM1..0 bits in the MCUCR Register select which
sleep mode (Idle, ADC Noise Reduction, Standby or Power-down) will be activated by the
SLEEP instruction. See
If an enabled interrupt occurs while the MCU is in a sleep mode, the MCU wakes up. The MCU
is then halted for four cycles in addition to the start-up time, executes the interrupt routine, and
resumes execution from the instruction following SLEEP. The contents of the Register File
and SRAM are unaltered when the device wakes up from sleep. If a reset occurs during sleep
mode, the MCU wakes up and executes from the Reset Vector.
When the SM1..0 bits are written to “00”, the SLEEP instruction makes the MCU enter idle
mode, stopping the CPU but allowing the analog comparator, ADC, timer/counter, watch-
dog, and interrupt system to continue operating. This sleep mode basically halts clk
clk
Sleep Mode
Idle
ADC Noise
Reduction
Power-down
Stand-by
FLASH
, while allowing the other clocks to run.
1. For INT0, only level interrupt.
2. Only recommended with external crystal or resonator selected as clock source
(2)
Active Clock Domains and Wake-up Sources in the Different Sleep Modes
®
Active Clock Domains
AVR
presents the different clock systems in the Atmel
Table 8-2 on page 38
®
provides various sleep modes allowing the user to tailor the power
X
X
X
for a summary.
Oscillators
X
X
X
X
X
X
X
(1)
(1)
Wake-up Sources
X
X
X
®
(1)
ATtiny24/44/84, and
Table 8-1
X
X
7701E–AVR–02/11
X
CPU
shows
X
X
X
and
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