MSP430FR50431: MSP low-power Requirements

guravaiah muvvala

Prodigy 30 points

Part Number: MSP430FR50431
Other Parts Discussed in Thread: MSP430FR5043

We Have taken FR6043 Template Project and some of the Modifications as to make GPIO Pins output low.

P1OUT = 0;
P1DIR = 0xFF;

P2OUT = 0;
P2DIR = 0xFF;

P3OUT = 0;
P3DIR = 0xFF;

P4OUT = 0;
P4DIR = 0xFF;

P5OUT = 0;
P5DIR = 0xFF;

P6OUT = 0;
P6DIR = 0xFF;

P7OUT = 0;
P7DIR = 0xFF;

PJOUT = 0;
PJSEL0 = BIT4 | BIT5; // For XT1
PJDIR = 0xFFFF;

//To make UART Disable

#define APPLICATION_ENABLE_UART_DEBUG 0

We Have Run the Customized Hardware in SINGLE_TONE Configuration, after We have Measured the Power Consumption in 3.3v

We want to Achieve the Low Power Consumption as 3uA to 4uA, But it is observed as Consuming Average 1mA for 14ms Measurement period in NO FLOW Condition and Consuming Average 1uA for 986ms LPM3.

Please provide the some inputs as to Achieve Low Power Consumption as 3uA to 4uA.

over 3 years ago

0 Johnson He over 3 years ago

TI__Mastermind 30406 points

Hi,

Please use this example code to do low power test:

https://dev.ti.com/tirex/explore/node?node=A__ABRgUBoMRbiQHpcDSRvAew__msp430ware__IOGqZri__LATEST

And you have to remove unuse connector to decrease current consumption.

Thanks!

Best Regards

Johnson

0 guravaiah muvvala over 3 years ago in reply to Johnson He

Prodigy 30 points

Thanks Johnson for Prompt Response

We have Customized Hardware to run USS Library over MSP430FR5043. The MSP430FR5043 Has to run USS Algorithm to detect WATER FLOW through the Pipe, We are able to run the USS Algorithm at 1Hz/Sec. MCU Runs in Active Mode of USS Algorithm for approximately <50ms and Remaining Period Approximately >950ms is LPM3. while running Active Mode it is Consuming 1mA and LPM3 Consumption is 1uA. we are looking for solution to follow to get reduced power consumption.

0 Johnson He over 3 years ago in reply to guravaiah muvvala

TI__Mastermind 30406 points

Hi,

LPM3 consumption is 1uA, I think this data is normal and match with spec:

If you would like to reduce power current, you can try decrease the number of pulse and ADC Capture Duration, but you have to ensure the accuracy can meet your requirement.

Thanks!

Best Regards

Johnson

0 guravaiah muvvala over 3 years ago in reply to Johnson He

Prodigy 30 points

Hi,

Active Measurement Mode it is Consuming Average 1mA. So We want to Achieve Active Measurement Power Consumption as Per the Datasheet Approximately 3-μA overall current consumption with 1 set of results per second.

0 Johnson He over 3 years ago in reply to guravaiah muvvala

TI__Mastermind 30406 points

Hi,

Can you share your average current consumption now?

Thanks!

Best Regards

Johnson

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MSP430FR50431: MSP low-power Requirements