ꢀ ꢁ ꢂꢃ ꢄ ꢅ ꢆꢇ ꢈꢆꢉ ꢀꢁ ꢂ ꢃꢄ ꢅ ꢆ ꢇ ꢊ ꢆꢉ ꢀꢁ ꢂ ꢃꢄ ꢅ ꢆ ꢇ ꢊꢇ ꢆ
ꢀ ꢋ ꢌ ꢍꢎ ꢁꢋ ꢏꢐ ꢑ ꢒ ꢀꢋ ꢓ ꢔꢕꢓ ꢕꢐ ꢖꢔ ꢕꢒ ꢒꢍ ꢔ
SLAS368D− OCTOBER 2002− REVISED MARCH 2005
operating modes
The MSP430 has one active mode and five software selectable low-power modes of operation. An interrupt
event can wake up the device from any of the five low-power modes, service the request and restore back to
the low-power mode on return from the interrupt program.
The following six operating modes can be configured by software:
D
D
Active mode AM;
All clocks are active
Low-power mode 0 (LPM0);
−
−
CPU is disabled
ACLK and SMCLK remain active. MCLK is disabled
D
D
Low-power mode 1 (LPM1);
−
CPU is disabled
ACLK and SMCLK remain active. MCLK is disabled
DCO’s dc-generator is disabled if DCO not used in active mode
Low-power mode 2 (LPM2);
−
CPU is disabled
MCLK and SMCLK are disabled
DCO’s dc-generator remains enabled
ACLK remains active
D
D
Low-power mode 3 (LPM3);
−
CPU is disabled
MCLK and SMCLK are disabled
DCO’s dc-generator is disabled
ACLK remains active
Low-power mode 4 (LPM4);
−
CPU is disabled
ACLK is disabled
MCLK and SMCLK are disabled
DCO’s dc-generator is disabled
Crystal oscillator is stopped
10
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