TUNAG003 Microchip Technology, TUNAG003 Datasheet - Page 6

• Manufacturer Part Number: TUNAG003
• Description: Position Sensor Development Tools UNAGI CM1020 ELEC COMPASS MOD
• Manufacturer: Microchip Technology

Specifications of TUNAG003

• Interface Type: I2C

UNAGI NET
www.unagi.net •
CM1020 COMPASS MODULE
Applications Information
Power On
The CM1020 only requires power to begin operation. The module has a built-in reset and watchdog function,
therefore all that is required is proper VDD to begin operation.
The maximum power ramp-up is 200uS. If power is applied at a slower ramp-up than 200uS, proper module
initialization is not guaranteed and operations may be erratic.
Serial Communication
The CM1020 communicates over a serial port with various control signals. Please refer to the Serial
Communication section for additional information on the exact timing signals required.
Direction North
The module facing direction is from the top edge of the module.
Automatic Calibration
The CM1020 has an automatic self-calibration function that operates once the power is applied, and continuously
thereafter on a regular basis. The magnetic axis self-calibration is performed when the module is rotated through
positions during normal use. No other action is necessary for the module to calibrate to the terrestrial magnetism
of the surrounding environment.
LLC
• MOUNTAIN VIEW, CALIFORNIA
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Version 0.92 - Jul 5, 2011
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