conrrent consumptio active and idle mode

[pavan]

Hello,

We are working with the one potential customer . they are working on battery connected beacon project below are the some queries

1. customer using nrf51822 soc and he wants interface with gps module . customer will be sending around 80bytes of data via gps module to nrf51822 soc so is it possible to enable the UART in standby mode(sleep mode)? if not what will be the approximate current consumption nrf51822 in active mode for receiving 80byes of data?

2. customer will be advertising 30bytes of data at 4dbm transmission power with 20ms advertising interval so what will be the rf current consumption for advertising 30bytes of data?

3. what is the current consumption of nrf51822 in idle(sleep) mode?

thanks in advance

regards

pavan

[MartinBL]

Hi,

1. Yes, you can disable and re-enable the UART between every transfer and prevent it from drawing current. Note that it is the average current that is important. So the total consumption also depends on how often and how fast you transfer data via UART. These are the electrical specs from nRF51 Product specs:

2. About 1.4mA to 1.8mA dependent on whether or not you chose to use the internal DCDC regulator.

3. It depends on your RAM configuration:

Your RTC clock run current will be added to that.

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Electrical specifications for the nRF51 series can be found here.