A good PCB layout for the ST26C31BTR involves keeping the antenna away from noisy components, using a solid ground plane, and minimizing the length of the NFC antenna connections. A 4-layer PCB with a dedicated ground plane is recommended.
To ensure reliable communication, ensure that the ST26C31BTR is properly powered, the NFC antenna is properly tuned, and the reader is configured to communicate at the correct frequency and data rate. Also, ensure that the ST26C31BTR is properly initialized and configured before attempting communication.
The ST26C31BTR has an operating temperature range of -40°C to 85°C. However, it's recommended to operate the device within a temperature range of 0°C to 70°C for optimal performance and reliability.
The ST26C31BTR has a built-in secure element that supports AES encryption and secure data storage. Implementing secure data storage and encryption involves using the STMicroelectronics-provided libraries and APIs to configure and use the secure element.
The ST26C31BTR has a typical active mode current consumption of 10mA and a sleep mode current consumption of 1µA. The device also has a low-power mode that can be used to reduce power consumption when not in use.
ST26C31BTR datasheet
by STMicroelectronics
