Adesto recommends a 4-layer PCB with a solid ground plane, and thermal vias under the package to dissipate heat. A minimum of 2oz copper thickness is recommended for optimal thermal performance.
Adesto provides a Secure Boot SDK and guidelines for secure firmware updates. Implementing secure boot involves generating a secure boot image, using a secure boot loader, and configuring the device for secure boot mode. For secure firmware updates, use a secure communication protocol and encrypt the firmware image.
Adesto recommends a power-on sequence of VDDIO, then VDD, and finally VDDQ. Use a low-dropout regulator (LDO) for voltage regulation, and ensure a minimum of 1.8V for VDDIO and 1.2V for VDD. Decouple the power pins with 0.1uF and 10uF capacitors.
To optimize for low power, use the device's power-saving modes (e.g., sleep mode), reduce clock frequencies, and minimize I/O activity. Also, consider using a low-power oscillator and optimizing the system's power management scheme.
Adesto recommends following the IEC 61967 standard for EMC and EMI. Use a shielded enclosure, minimize trace lengths, and use a common-mode choke to reduce EMI. Ensure a minimum of 10mm clearance between the device and other components.
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14230R-450 Overview
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