Datasheet

ECCN 5E002 TSPA - Technology / Software Publicly Available
MSP430F677x , MSP430F676x , MSP430F674x
www.ti.com SLAS768D –SEPTEMBER 2012–REVISED DECEMBER 2013
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 and 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 3.5 (LPM3.5)
– Internal regulator disabled
– No RAM retention, Backup RAM retained
– I/O pad state retention
– RTC clocked by low-frequency oscillator
– Wakeup from RST/NMI, RTC_C events, Ports P1 and P2
• Low-power mode 4.5 (LPM4.5)
– Internal regulator disabled
– No RAM retention, Backup RAM retained
– RTC is disabled
– I/O pad state retention
– Wakeup from RST/NMI, Ports P1 and P2
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