Power consumption by peripheral such as GPIO, TWI, UART, SPI, RTC, SAADC

[Nahan_Trogn]

I want to calculate the power consumption used by many peripheral like GPIO, TWI, UART, SPI, RTC, SAADC. I can't find these information in nrf52840 PS v1.1

Because I don't disable these peripheral when in Power on Idle mode (sd_app_evt_wait()) and I can't measure the current which is lower than 1mA, So please let me know the power consumption value of these peripherals while in standby state and while doing data transmission.

Thanks in advance.

My development environment and config:

SDK 17.0.2

Nrf52840

BLE application

DCDC enable, TWI 400 Khz transceive max 16 byte, UART 115200, RTC 1 for app timer trigger every 1s, advertising interval = 2s, connection interval = 300ms, Tx Power = 8 dBm, SAADC with default config from sdk, GPIO input pull up, GPIO output

[Jared]

Hi,

Most of these peripherals are dependent on the EasyDMA structure which itself will consume about 1.3 mA. What you measure is therefore not unsurprising. I would just disable the peripherals after I'm done using them before going to sleep to save power.

regards

Jared