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ZHCSJA6B January 2019 – December 2021 MSP430FR5041 , MSP430FR5043 , MSP430FR50431 , MSP430FR6041 , MSP430FR6043 , MSP430FR60431

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机械数据 (封装 | 引脚)

PM|64
- MTQF008B
RGC|64
- MPQF125F

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9.5 Operating Modes

The MCU has one active mode and seven software selectable low-power modes of operation. An interrupt event can wake up the device from low-power modes LPM0 through LPM4, service the request, and restore back to the low-power mode on return from the interrupt program. Low-power modes LPM3.5 and LPM4.5 disable the core supply to minimize power consumption.

Note:

XT1CLK and VLOCLK can be active during LPM4 if requested by low-frequency peripherals such as RTC or WDT.

Table 9-1 Operating Modes

MODE	AM		LPM0		LPM1	LPM2	LPM3	LPM4	LPM3.5	LPM4.5
MODE	ACTIVE	ACTIVE, FRAM OFF⁽¹⁾	CPU OFF⁽²⁾		CPU OFF	STANDBY	STANDBY	OFF	RTC ONLY	SHUTDOWN WITH SVS	SHUTDOWN WITHOUT SVS
Maximum system clock	16 MHz		16 MHz		16 MHz	50 kHz	50 kHz	0⁽³⁾	50 kHz	0⁽³⁾
Typical current consumption, T_A = 25°C	103 µA/MHz	65 µA/MHz	70 µA at 1 MHz		35 µA at 1 MHz	0.7 µA	0.4 µA	0.3 µA	0.25 µA	0.2 µA	0.02 µA
Typical wake-up time	N/A		instant		6 µs	6 µs	7 µs	7 µs	250 µs	250 µs	1000 µs
Wake-up events	N/A		all		all	LF, RTC, I/O, Comp	LF, RTC, I/O, Comp	I/O, Comp	RTC, I/O	I/O
CPU	on		off		off	off	off	off	reset	reset
USS_A	on		on		off	off	off	off	reset	reset
LEA	on		on⁽¹⁰⁾	off	off	off	off	off	reset	reset
FRAM	on	off⁽¹⁾	standby (or off⁽¹⁾)		off	off	off	off	off	off
High-frequency peripherals	available		available		available	off	off	off	reset	reset
Low-frequency peripherals	available		available		available	available	available⁽⁴⁾	off	RTC MTIF	reset
Unclocked peripherals⁽⁵⁾	available		available		available	available	available⁽⁴⁾	available⁽⁴⁾	reset	reset
MCLK	on		on⁽¹⁰⁾	off	off	off	off	off	off	off
SMCLK	optional⁽⁶⁾		optional⁽⁶⁾		optional⁽⁶⁾	off	off	off	off	off
ACLK	on		on		on	on	on	off	off	off
Full retention	yes		yes		yes	yes	yes	yes	no	no
SVS	always		always		always	optional⁽⁷⁾	optional⁽⁷⁾	optional⁽⁷⁾	optional⁽⁷⁾	on⁽⁸⁾	off⁽⁹⁾
Brownout	always		always		always	always	always	always	always	always

(1) FRAM is disabled in the FRAM controller A (FRCTL_A).

(2) Disabling the FRAM through the FRAM controller A (FRCTL_A) allows the application to lower the LPM current consumption but the wake-up time increases as soon as FRAM is accessed (for example, to fetch an interrupt vector). For a non-FRAM wake-up (for example, DMA transfer to RAM) the wake-up is not delayed.

(3) All clocks are disabled.

(4) See Section 9.5.2, which describes the use of peripherals in LPM3 and LPM4.

(5) "Unclocked peripherals" are peripherals that do not require a clock source to operate; for example, the comparator and REF, or the eUSCI when operated as an SPI slave.

(6) Controlled by SMCLKOFF.

(7) Activated SVS (SVSHE = 1) results in higher current consumption. SVS is not included in typical current consumption.

(8) SVSHE = 1

(9) SVSHE = 0

(10) Only while LEA is performing the task enabled by CPU during AM. LEA cannot be enabled in LPM0.