A good PCB layout for the ST26C31BDR 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 implement a secure boot mechanism, use the ST26C31BDR's built-in secure boot feature, which allows you to store a secure boot key in the device's OTP memory. This ensures that only authorized firmware can be loaded onto the device.
The ST26C31BDR can operate at frequencies up to 13.56 MHz, but the maximum operating frequency may vary depending on the specific application and antenna design.
To optimize the antenna design, use a simulation tool like CST Studio Suite or ANSYS HFSS to simulate the antenna's performance. Consider factors like antenna size, shape, and material, as well as the device's operating frequency and surrounding environment.
The ST26C31BDR supports data transfer rates up to 424 kbps, depending on the specific mode of operation and the type of data being transferred.
ST26C31BDR datasheet
by STMicroelectronics
