MC3630 Datasheet, PDF (26/83 Pages) –

MC3630 3-Axis Accelerometer
Preliminary Datasheet
Mode State Machine Flow
Figure 11. Mode Operational Flow shows the operational mode flow for the device. The device
defaults to SLEEP mode following power-on. Mode transitions occur at an approximate rate of
~500Hz. Depending on the operation, the MODE State Machine may trigger events that auto-
clear or set the MCTRL[2:0] bits in register 0x10[2:0] after a particular command is chosen.
TRIG_CMD 0x10[7] or
TRIG
External Signal
Loop until
Count = TrigCount or
Mode Changed
ODR from Standby Clock
0x12[7:5]
ODR taken
from 0x12[3:0]
TRIG
Sniff
STANDBY
(delay<3mSec)
or
SLEEP
(delay<10mSec)
SWake
Standby
ODR taken
from 0x11[3:0]
CWake
CWAKE
ODR taken
from R11
Standby
Standby
SNIFF
N
Y
Activity?
SWAKE
N
Y
When enabled do:
Activity?
 Send out Interrupt
 Freeze FIFO
Figure 11. Mode Operational Flow
mCube Proprietary
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APS-048-0047v1.2
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