SLAAEO9 October   2024 MSPM0C1103 , MSPM0C1103-Q1 , MSPM0C1104 , MSPM0C1104-Q1 , MSPM0C1105 , MSPM0C1106 , MSPM0C1106-Q1 , MSPM0G1105 , MSPM0G1106 , MSPM0G1107 , MSPM0G1505 , MSPM0G1506 , MSPM0G1507 , MSPM0G1518 , MSPM0G1519 , MSPM0G3105 , MSPM0G3105-Q1 , MSPM0G3106 , MSPM0G3106-Q1 , MSPM0G3107 , MSPM0G3107-Q1 , MSPM0G3505 , MSPM0G3505-Q1 , MSPM0G3506 , MSPM0G3506-Q1 , MSPM0G3507 , MSPM0G3507-Q1 , MSPM0G3518 , MSPM0G3518-Q1 , MSPM0G3519 , MSPM0G3519-Q1 , MSPM0H3216 , MSPM0H3216-Q1 , MSPM0L1105

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1MSPM0 Low Power Mode Introduction
    1. 1.1 MSPM0 Power Domain Introduction
    2. 1.2 MSPM0 Low-Power Mode Introduction
    3. 1.3 Power Consumption Measurement Based on EnergyTrace
      1. 1.3.1 EnergyTrace Introduction
      2. 1.3.2 EnergyTrace Configuration With CCS
  5. 2MSPM0 System Power Consumption Measurement
  6. 3MSPM0 Peripheral Power Consumption Measurement
    1. 3.1  GPIO
    2. 3.2  RTC
    3. 3.3  WWDT
    4. 3.4  TIMER
      1. 3.4.1 TIMG0
      2. 3.4.2 TIMA0
    5. 3.5  UART
    6. 3.6  I2C
    7. 3.7  SPI
    8. 3.8  MCAN
    9. 3.9  SYSPLL
    10. 3.10 VREF
    11. 3.11 ADC
  7. 4Low-Power Mode Guidance

3.7 SPI

Table 3-9 SPI Power Consumption Test Table
SPI Configuration Current
Software
  • SPI works as controller and sourced from MCLK, and working frequency is 500kHz;
Test condition Enable SPI power and initial, WFI (STANDBY1) 4.1uA
SPI continuously transfer data(500kHz) 3.02mA
RUN0 mode, while (1) {} 2.13mA
Close SPI power and reset, while (1) {} 1.96mA
Enter low-power mode, WFI (STANDBY1) 1.9uA

SPI Power Consumption Test Under STANDBY1 Mode

Figure 3-8 SPI Power Consumption Test Under STANDBY1 Mode
According the test result above, there are several conclusions and tips about SPI in low-power mode:
  • SPI module enable power in RUN0 mode is about 170uA
  • As SPI module is located in PD1, an entry into STOP or STANDBY low-power mode forces the SPI module to be temporarily disabled. Reset SPI or disable power can also close SPI power.

If SPI are not reset before entering STOP or STANDBY mode, the configuration restores after exit of low-power mode. And SPI can work normally by enable power after exit of low-power mode.