MSP430FR5994_17 Datasheet, PDF (65/168 Pages) Texas Instruments – Mixed-Signal Microcontrollers

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MSP430FR5994, MSP430FR59941, MSP430FR5992, MSP430FR5964, MSP430FR5962
SLASE54A – MARCH 2016 – REVISED OCTOBER 2016
6.4 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.
Table 6-1. Operating Modes
MODE
Maximum system clock
Typical current consumption,
T_A = 25°C
Typical wake-up time
AM
ACTIVE
ACTIVE,
FRAM
OFF ⁽¹⁾
16 MHz
120 µA/MHz 65 µA/MHz
N/A
LPM0
CPU OFF⁽²⁾
16 MHz
92 µA at 1 MHz
Instant
LPM1
CPU OFF
16 MHz
40 µA at 1 MHz
6 µs
Wake-up events
N/A
All
All
CPU
LEA (MSP430FR599x only)
FRAM
High-frequency
peripherals ⁽⁵⁾
Low-frequency peripherals⁽⁵⁾
Unclocked peripherals⁽⁵⁾
MCLK
SMCLK
ACLK
Full retention
SVS
Brownout
On
On
On
Off ⁽¹⁾
Available
Available
Available
On
Optional ⁽⁷⁾
On
Yes
Always
Always
Off
On ⁽⁴⁾
Off
Standby
(or off⁽¹⁾)
Available
Available
Available
On ⁽⁴⁾
Off
Optional ⁽⁷⁾
On
Yes
Always
Always
Off
Off
Off
Available
Available
Available
Off
Optional ⁽⁷⁾
On
Yes
Always
Always
LPM2
STANDBY
50 kHz
1.0 µA
6 µs
LF
RTC
I/O
Comp
Off
Off
Off
Off
Available
Available
Off
Off
On
Yes
Optional ⁽⁸⁾
Always
LPM3
STANDBY
50 kHz
0.7 µA
7 µs
LF
RTC
I/O
Comp
Off
Off
Off
Off
Available ⁽⁶⁾
Available ⁽⁶⁾
Off
Off
On
Yes
Optional ⁽⁸⁾
Always
LPM4
OFF
0 ⁽³⁾
0.5 µA
7 µs
I/O
Comp
Off
Off
Off
Off
Off
Available ⁽⁶⁾
Off
Off
Off
Yes
optional ⁽⁸⁾
Always
LPM3.5
RTC ONLY
50 kHz
0.45 µA
250 µs
RTC
I/O
Reset
Reset
Off
Reset
RTC
Reset
Off
Off
Off
No
Optional ⁽⁸⁾
Always
LPM4.5
SHUTDOWN SHUTDOWN
WITH SVS WITHOUT SVS
0 ⁽³⁾
0.3 µA
0.07 µA
250 µs
400 µs
I/O
Reset
Reset
Off
Reset
Reset
Reset
Off
Off
Off
No
On ⁽⁹⁾
Off ⁽¹⁰⁾
Always
(1) FRAM disabled in FRAM controller A
(2) Disabling the FRAM through the FRAM controller A allows the application to lower the LPM current consumption but the wake-up time increases when FRAM is accessed (for example, to
fetch an interrupt vector). For a wake up that does not access FRAM (for example, a DMA transfer to RAM) the wake-up time is not increased.
(3) All clocks disabled
(4) Only while the LEA module is performing the task enabled by CPU during AM. The LEA module cannot be enabled in LPM0.
(5) See Section 6.4.1 for a detailed description of high-frequency, low-frequency, and unclocked peripherals.
(6) See Section 6.4.2, which describes the use of peripherals in LPM3 and LPM4.
(7) Controlled by SMCLKOFF
(8) Activate SVS (SVSHE = 1) results in higher current consumption. SVS is not included in typical current consumption.
(9) SVSHE = 1
(10) SVSHE = 0
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