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KAmodMMA8451Q

Description

KAmodMMA8451Q is a module with the NXP MMA8451Q triaxial accelerometer. The board is equipped with a Pmod I2C standard connector and a KAMAMI connector, that allows easy connection of the module to the evaluation kits. Due to its small dimensions, the product can be used in many development projects, while the Pmod loop connector allows to connect the boards in the series.

KAmodMMA8451Q modul.png
Basic features and parameters
  • MMA8451Q chip from NXP
    • Acceleration measurement in the range of ±2g/±4g/±8g
    • Frequency of measurement: from 1.56Hz to 800Hz
    • Noise level: 99μg/√ Hz
    • Orientation detection with programmable hysteresis
    • Embedded self-test function
    • I2C bus
    • Programmable interrupt output
    • Possibility to choose the chip address (0x1C or 0x1D)
  • Connector compatible with the Pmod standard, allows serial connection of Pmod I2C modules
  • The connector complies with the KAMAMI standard
  • Embedded jumpers activating pull-up on I2C bus lines
  • Embedded jumper connecting the INT line of the chip to the INT line of Pmod connectors
  • Embedded I2C address selector
  • Possibility to supply voltage from 2.1...3.6V through Pmod connector and 2.1V...5.5V through KAMAMI connector
  • Mounting holes with a diameter of 2.5mm
  • Dimensions: 61.2mm x 20.3mm x 10mm
Standard equipment
Code Description
KAmodMMA8451Q
  • Assembled and launched module
Electrical schematics
KAmodMMA8451Q schemat.png
Output description - Pmod standard connector
KAmodMMA8451Q obrys zlacze.png
JP1 male connector) JP2 (female connector) Function
VDD VDD Power supply of module (max. 3,6 V)
GND GND
SDA SDA Data line of I2C bus
SCL SCL Clock line of I2C bus
RST RST -
INT INT Interrupt line INT2
Output description – KAMAMI standard connector
KAmodMMA8451Q obrys zlacza kamami.png
Pin number Function
1 (VDD_5V) Power supply of module (max. 5,5 V)
2 (SCL) Clock line of I2C bus
3 (SDA) Data line of I2C bus
4 (GND) Ground
I2C bus lines

The KAmodMMA8451Q module is equipped with jumpers allowing to connect pull-up resistors to the positive 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.

KAmodMMA8451Q obrys i2c.png
Interrupt line INT2

The KAmodMMA8451Q module has been equipped with a jumper enabling connection of the INT2 interrupt output line to the Pmod compatible connector. Thanks to the possibility of disconnecting the MMA8451Q interrupt line from Pmod connectors, the user does not have to worry about the consequences of possible conflicts resulting from the connection of Pmod-compatible module modules with different logic states.

KAmodMMA8451Q obrys int.png
I2C address

The KAmodMMA8451Q module has been equipped with the function of selecting one of the two I2C bus addresses for the MMA8451Q chip. The jumper "Addr. 0x" in position "1D" causes that the integrated circuit will be represented by bus address 0x1D (HEX), and in position "1C" - 0x1C (HEX).

KAmodMMA8451Q obrys address.png
Dimensions
KAmodMMA8451Q wymiary PCB.png
External links