MSP430FR2310: 1KHz pulse stream

Nicholas Carley

Part Number: MSP430FR2310

Hello,

Can you confirm that we can run up to a 1kHz pulse stream from one of the GPIO pins to Timer_B3 in LPM3 (Standby power mode, Low Power Mode 3) for the MSP430FR2310?
It seems from the datasheet that if this is possible, the current consumpion will be in the single-digit micro-amps while in this mode - is that correct?

Do you have a good power consumption calculator that we could use to check that we could meet our power budget with an MSP part? Most of the time, it would be in LPM3, assuming we can effectively count pulses in that mode. It will also be an I2C slave, and sample two ADC inputs periodically.

Thanks,

Nick

over 5 years ago

0 Wei.Jetim Zhao over 5 years ago

TI__Genius 13215 points

Hi Nicholas,

You can output 1kHz PWM with Timer_B in LPM3 mode. Please find the Peripherals Example here:

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0 Ben Renneberg60 over 5 years ago in reply to Wei.Jetim Zhao

Prodigy 20 points

Wei,

I meant to ask about the opposite - receiving a 1kHz pulse stream into TimerB, accumulating, and having the processor wake at standard intervals to record the accumulated value. You led me to the peripherals examples, which also has an example similar to what I'm looking for: http://dev.ti.com/tirex/#/Device/MSP430FR2310/?link=Software%2FMSP430Ware%2FDevices%2FMSP430FR2310%2FPeripheral%20Examples%2FRegister%20Level%2Fmsp430fr231x_tb0_22.c

Do you know the bandwidth that can be supported from an external pulse input when used in this mode with no internal clock?

Thanks!

Ben

0 Wei.Jetim Zhao over 5 years ago in reply to Ben Renneberg60

TI__Genius 13215 points

Hi Ben,

The Timer_B input clock frequency is required 16MHz for Max. You can find the parameter in device datasheet.

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MSP430FR2310: 1KHz pulse stream