The iCog™ Pressure sensor uses the Freescale MPL3115A2 Precision Altimeter to measure pressure. Users should consult the relevant Freescale datasheet for more information about the sensor.

CognIoT™ iCog™ sensor boards come fitted with an ‘ID-IoT’ system chip. This is an EEPROM with 1kbytes of user storage (for calibration data etc.). The ID-IoT chip contains a unique 32-bit number to identify the sensor board.

The Sensor – MPL3115A2

• 20KPA to 110KPA
• Fully Compensated
• 24-bit equivalent ADC resulting in 0.1 metre of effective resolution
• Direct Reading
• o Pressure: 20-bit in Pascals
• o Altitude: 20-bit in metres
• o Temperature: 12-bit in °C
• Programmable Interrupts
• Embedded FIFO allows data logging

ID-IoT chip – eeprom

• Prewired for base I2C address
• Configurable for different addresses
• o A0,A1 address selection may be changed
• o Allows up to 4 iCogs™ on same bus
• o See application note for details
• 1KB user data space
• 32-bit Unique ID No. (UID)
• Option to fit pull up resistors on SDA/SCL lines if required
• NOTE: The iCog Sensors are shipped with a 6-way 0.1” header that should be soldered into the sensor board.