VN808-E datasheet by STMicroelectronics

VN808-E Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal thermal performance?
  STMicroelectronics recommends a 2-layer or 4-layer PCB with a solid ground plane and a thermal relief pattern under the IC to ensure optimal thermal performance.
• How do I ensure reliable communication between the VN808-E and the microcontroller?
  Use a dedicated SPI bus with a separate CS (Chip Select) line for the VN808-E, and ensure proper signal termination and shielding to minimize noise and interference.
• What is the maximum operating temperature range for the VN808-E?
  The VN808-E is rated for operation from -40°C to 125°C, but it's recommended to operate within -20°C to 85°C for optimal performance and reliability.
• How do I handle the VN808-E's power-on reset (POR) and brown-out reset (BOR)?
  Use an external reset circuit or a dedicated reset IC to ensure a clean power-on reset and brown-out reset, and consider adding a capacitor to the VCC pin to filter out noise.
• What is the recommended decoupling capacitor value for the VN808-E?
  Use a 100nF to 1uF decoupling capacitor between the VCC and GND pins, placed as close to the IC as possible, to filter out noise and ensure stable operation.