The maximum operating temperature range for the NRF52840-QIAA-R is -40°C to 85°C.
The NFC tag functionality on the NRF52840-QIAA-R can be configured using the Nordic UART (NUART) interface. You need to use the NRF52840's NFC peripheral and configure it as a passive NFC tag. You can refer to the Nordic Semiconductor's documentation and example code for more information.
The maximum current consumption of the NRF52840-QIAA-R is approximately 5.4mA in TX mode and 4.6mA in RX mode, when operating at 3.0V and 1Mbps data rate.
To implement secure boot on the NRF52840-QIAA-R, you need to use the Nordic Semiconductor's Secure Bootloader (SBL) and follow the guidelines provided in the Nordic Semiconductor's documentation. You need to generate a secure boot image, sign it with a private key, and then flash it to the device.
The maximum data transfer rate of the NRF52840-QIAA-R is 2Mbps.
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NRF52840-QIAA-R Overview
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