KAmodLSM303C

Description

KAmodLSM303C is a module with the MEMS LSM303C chip from STMicroelectronics. The chip has a digital signal output (I2C or SPI bus) and allows measurement of accelerations and magnetic field values in three axes. Thanks to the programmable interrupt generator outputs, it is possible to wake up the microcontroller after detecting free fall or object movement. The board is equipped with a Pmod I2C standard connector and a KAMAMI connector, allowing easy attachment of the module to development kits. Due to its small dimensions, the product can be used in many development projects, while the Pmod through connector allows the boards to be connected in series.

Basic features

• LSM303C system (accelerometer and MEMS magnetometer) from STMicroelectronics
  • Accelerometer measuring range: ± 2 / ± 4 / ± 6 / ± 8 g
  • Magnetometer measuring range: ± 16 Gauss
  • 16 bit data output
  • Sleep mode/low power mode
  • Embedded temperature sensor
  • Communication interface: SPI/I2C
  • Programmable interrupt generators (with free fall, motion or magnetic field detection)
• Through connector compatible with the Pmod standard, allows for serial connection of Pmod I2C modules
• Connector compatible with the KAMAMI standard
• Embedded jumpers enabling pull-up on I2C bus lines
• Embedded jumper connecting the INT line of the system to the INT line of the Pmod connectors
• Possibility of supply with voltage from 1.9 - 3.6 V through the Pmod connector and 1.9 - 5.5 V through the KAMAMI connector
• Mounting holes with a diameter of 2.5 mm
• Dimensions: 61.2 mm x 20.3 mm x 10 mm

Standard equipment

Code	Description
KAmodLSM303C	Assembled and launched module

Schematic

Output description - Pmod standard connector

	JP1 (male connector)	JP2 (female connector)	I2C	SPI 3-wire
	VDD	VDD	Power supply of module (max. 3.6 V)
	GND	GND
	SDA	SDA	Data line of I2C bus	Data line of SPI bus (SDI/SDO)
	SCL	SCL	Clock line of I2C bus	Clock line of SPI bus (SPC)
	RST	RST	-
	INT	INT	INT_MAG/INT_XL interrupt

Output description – KAMAMI standard connector

	Pin number	I2C	SPI 3-wire
	1 (VDD_5V)	Power supply of module (max. 5.5 V)
	2 (SCL)	Clock line of I2C bus	Clock line of SPI bus (SPC)
	3 (SDA)	Data line of I2C bus	Data line of SPI bus (SDI/SDO)
	4 (GND)	Ground

I2C bus lines

The KAmodLSM303C module is equipped with jumpers enabling the connection of pull-up resistors to the VCC power pole to the I2C bus line. The jumpers give the possibility of independent enabled of the pull-up for the SDA and SCL lines.

INT interrupt line

The KAmodLSM303C module is equipped with a jumper to connect the INT_XL or INT_MAG interrupt output line to the connector compatible with the Pmod standard. Thanks to the ability to disconnect the KAmodLSM303C interrupt line from the Pmod connectors, the user does not have to worry about the consequences of any conflicts arising from connecting modules compatible with Pmod with different logic states.

Selection of communication bus

The KAmodLSM303C module has the option of choosing a communication bus between I2C and SPI. The selection of the active bus is done by soldering the jumper in the right place in the form of a 0R resistor on the board. By default, the module is configured for communication via the I2C bus.

Dimensions

External links

• LSM303C datasheet