MC3610 Datasheet, PDF (20/67 Pages) List of Unclassifed Manufacturers – Axis Accelerometer

MC3610 3-Axis Accelerometer
Preliminary Datasheet
5 GENERAL OPERATION
The device supports the reading of samples and device status upon interrupt or via polling. It
contains a 12-bit 32 sample FIFO with programmable watermark. The device is internally
clocked but also includes a manual trigger mode. It can be put into several low power modes,
depending upon the desired sensing application. The device can run in full-featured mode from
its fast internal clock or from a slower heartbeat clock, with limited functionality and at lower
power. The device can connect as a slave to either a SPI (2 MHz) or I2C master (400 KHz).
5.1 SENSOR SAMPLING
X, Y and Z accelerometer data is stored in registers XOUT, YOUT, and ZOUT registers. The
data is represented as 2’s complement format.
The desired resolution and full scale acceleration range are set in the RANGE_C register.
5.2 OFFSET AND GAIN CALIBRATION
The default digital offset and gain calibration data can be read from the device, if necessary, in
order to reduce the effects of post-assembly influences and stresses which may cause the
sensor readings to be offset from their factory values.
5.3 RESET
The device can be completely reset via an I2C or SPI instruction. Writing register 0x24 with
0x40 (bit 6) causes a power-on reset operation to execute. No attempt should be made to
access registers within 1mSec after issuing this operation. The device must be placed in
STANDBY mode before executing the reset.
The pin DOUT_A1 is sampled for the purposes of setting the I2C device address after this
reset operation.
5.4 RELOAD
The device registers can be reloaded from OTP via an I2C or SPI instruction. Writing register
0x24 with 0x80 (bit 7) causes a reload operation to execute. The contents of OTP are reloaded
into the register set. However any non-loaded register locations will not be affected. No
attempt should be made to access registers within 1mSec after issuing this operation. The
device must be placed in STANDBY mode before executing the reset.
The pin DOUT_A1 is sampled for the purposes of setting the I2C device address after this
reload operation.
mCube Proprietary.
APS-048-0042v1.6
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