3.7 Temperature Sensor

The MCP9808 digital temperature sensor converts temperatures between -20°C and +100°C to a digital word with ±0.25°C/±0.5°C (typical/maximum) accuracy. For more details, refer to the MCP9808 ±0.5°C Maximum Accuracy Digital Temperature Sensor (DS20005095).

The following are the additional features of the MCP9808 digital temperature sensor:

• Accuracy
  • ±0.25°C (typical) from -40°C to +125°C
  • ±0.5°C (maximum) from -20°C to +100°C
• User-Selectable Measurement Resolution
  • 0.5°C
  • 0.25°C
  • 0.125°C
  • 0.0625°C
• User-Programmable Temperature Limits
  • Temperature Window Limit
  • Critical Temperature Limit
• User-Programmable Temperature Alert Output
• Operating Voltage Range – 2.7-5.5V
• Operating Current – 200 μA (typical)
• Shutdown Current – 0.1 μA (typical)

The MCP9808 temperature sensor is connected to the WFI32E01PC module through I²C and a GPIO for the user-configurable alert output.