The recommended operating temperature range for NRF52840-CKAA-R is -40°C to 85°C, but it can tolerate storage temperatures from -40°C to 125°C.
To configure the NFC tag functionality, you need to use the Nordic UART (NUART) interface to communicate with the NFC controller. You can use the nrf52840_nfc.c file in the Nordic SDK as a reference implementation.
Yes, the NRF52840-CKAA-R can operate as both a BLE peripheral and central device simultaneously, but it requires careful configuration and handling of the BLE stack to avoid conflicts.
To optimize power consumption, use the low-power modes (e.g., System ON, System OFF, and Hibernate) provided by the chip, and optimize your application's sleep modes, clock frequencies, and peripheral usage. You can also use the Nordic Power Profiler tool to analyze and optimize power consumption.
The maximum transmit power of the NRF52840-CKAA-R is +8 dBm, but it can be adjusted to lower values depending on the application requirements.
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