MC3216 Datasheet, PDF (18/47 Pages) List of Unclassifed Manufacturers – Axis Accelerometer

MC3216 3-Axis Accelerometer
Preliminary Datasheet
6 OPERATIONAL STATES
The device has two states of operation: STANDBY (the default state after power-up), and
WAKE.
The STANDBY state offers the lowest power consumption. In this state, the I2C interface is
active and all register reads and writes are allowed. There is no event detection, sampling, or
acceleration measurement in the STANDBY state. Internal clocking is halted. Complete access
to the register set is allowed in this state, but interrupts cannot be serviced. The device
defaults to the STANDBY state following power-up. The time to change states from STANDBY
to WAKE is less than 10uSec.
Registers can be written (and therefore resolution, range. thresholds and other settings
changed) only when the device is in STANDBY state.
The I2C interface allows write access to all registers only in the STANDBY state. In WAKE
state, the only I2C register write access permitted is to the MODE: Mode Control Register. Full
read access is allowed in all states.
State
I2C Bus
Description
STANDBY
Device responds to
I2C bus (R/W)
Device is powered; Registers can be accessed via I2C. Lowest
power state. No interrupt generation, internal clocking disabled.
Default power-on state.
WAKE
Device responds to Continuous sampling and reading of sense data. All registers except
I2C bus (Read)
the MODE: Mode Control Register are read-only.
Table 8. Operational States
mCube Proprietary.
APS-048-0030v1.3
© 2014 mCube Inc. All rights reserved.
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