SLAAE72 December   2022 MSPM0L1105 , MSPM0L1106 , MSPM0L1303 , MSPM0L1304 , MSPM0L1304-Q1 , MSPM0L1305 , MSPM0L1305-Q1 , MSPM0L1306 , MSPM0L1306-Q1 , MSPM0L1343 , MSPM0L1344 , MSPM0L1345 , MSPM0L1346

 

  1.   Abstract
  2.   Trademarks
  3. 1Overview
  4. 2Low-Power Features in PMCU
    1. 2.1 Overview
      1. 2.1.1 Power Domains and Power Modes
    2. 2.2 Power Management (PMU)
      1. 2.2.1 Supply Supervisors
      2. 2.2.2 Peripheral Power Control
      3. 2.2.3 VBOOST for Analog Muxes
    3. 2.3 Clock Module (CKM)
      1. 2.3.1 Oscillators
      2. 2.3.2 Clocks
      3. 2.3.3 Asynchronous Fast Clock Requests
      4. 2.3.4 Shutdown Mode Handling
  5. 3Low-Power Optimization
    1. 3.1 Low-Power Basics
    2. 3.2 MSPM0 Low-Power Feature Use
      1. 3.2.1 Low-Power Modes
      2. 3.2.2 System Clock and Peripheral Operation Frequency
      3. 3.2.3 I/O Configuration
      4. 3.2.4 Event Manager
      5. 3.2.5 Analog Peripheral Low-Power Features
      6. 3.2.6 Run Code From RAM
    3. 3.3 Software Coding Strategies
    4. 3.4 Hardware Design Strategies
  6. 4Power Consumption Measurement and Evaluation
    1. 4.1 Current Evaluation
    2. 4.2 Current Measurement
      1. 4.2.1 Current Measurement

3.2.5 Analog Peripheral Low-Power Features

MSPM0 devices have peripherals with particular power features that allow to design and develop low-power applications while maintaining a high flexibility. For the detailed parameters, refer to the data sheet.

ADC

The ADC has 12-, 10-, and 8-bit analog-to-digital conversion mode. Choose the low conversion mode can use fewer conversion cycles and save the power.

The ADC has two power down modes, configured by PWRDN. The first is that the ADC automatically power down at the end of a conversion and when the next sample signal is not required to be asserted immediately. The second mode is that the ADC stays powered on when the peripheral is enabled. Using the default mode uses less current.

COMP

The comparator on MSPM0 has two power modes. Fast mode can get highest reaction to signal change. Lower-power mode can get a balance between functionality and power consumption. Please pay attention that the default configuration of comparator is in the fast mode.

OPA

The OPA is a zero-drift chopper-stabilized operational amplifier with a programmable gain stage. In addition to output current, there are two configurations for high performance that also affect current consumption as shown in Table 3-2. With the default low-performance setting, the OPA consumes less power.

Table 3-2 OPA Operation Modes
Parameter Configuration Options
Rail-to-rail input (RRI) Enabled / disabled
Gain bandwidth product (GBW) 6 MHz (STD mode) / 1 MHz (LP mode)

GPAMP

The GPAMP is a chopper-stabilized general-purpose operational amplifier with rail-to-rail input and output. The rail-to-rail input range influences the current consumption. With the default low-performance setting, the GPAMP consumes less power.