PRODUCTPREVIEW
MSP430F663x
SLAS566 – OCTOBER 2009
www.ti.com
Operating Modes
The MSP430 has one active mode and six 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 seven operating modes can be configured by software:
•
Active mode (AM)
–
All clocks are active
•
Low-power mode 0 (LPM0)
–
CPU is disabled
–
ACLK and SMCLK remain active, MCLK is disabled
–
FLL loop control remains active
•
Low-power mode 1 (LPM1)
–
CPU is disabled
–
FLL loop control is disabled
–
ACLK and SMCLK remain active, MCLK is disabled
•
Low-power mode 2 (LPM2)
–
CPU is disabled
–
MCLK, FLL loop control, and DCOCLK are disabled
–
DCO's dc generator remains enabled
–
ACLK remains active
•
Low-power mode 3 (LPM3)
–
CPU is disabled
–
MCLK, FLL loop control, and DCOCLK are disabled
–
DCO's dc generator is disabled
–
ACLK remains active
•
Low-power mode 4 (LPM4)
–
CPU is disabled
–
ACLK is disabled
–
MCLK, FLL loop control, and DCOCLK are disabled
–
DCO's dc generator is disabled
–
Crystal oscillator is stopped
–
Complete data retention
•
Low-power mode 5 (LPM5)
–
Internal regulator disabled
–
No data retention
–
optional RTC clocked by low-frequency oscillator
–
Wakeup from RST/NMI, RTC_B, P1, P2, P3, and P4
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