mma1605wr2 Freescale Semiconductor, Inc, mma1605wr2 Datasheet - Page 19

• Manufacturer Part Number: mma1605wr2
• Description: Dsi Inertial Sensor
• Manufacturer: Freescale Semiconductor, Inc

3.3.3
voltages fall below the specified thresholds in
t
3.3.4
becomes open. At a continuous rate specified in
short duration (t
the internal reset threshold, forcing a device reset.
3.4
Sensors
Freescale Semiconductor
VREGA_POR
The device includes a circuit to monitor the internally regulated voltages (V
A monitor circuit is incorporated to ensure predictable operation if the connection to the external C
The device includes a factory trimmed oscillator as specified in
V
V
PORVREG_f
PORREGA_f
CAP_Test
CAP_Test
V
V
Internal Oscillator
V
V
POR
REG
REG
REGA
POR
) specified in
REG
, and V
CAPTEST_TIME
and V
REGA
REGA
Section
). If either of the external capacitors are not present, the associated regulator voltage will fall below
Capacitance Monitor
Undervoltage Monitor
2.7.
t
t
CAPTEST_RATE
CAPTEST_RATE
t
Capacitor Present
t
Capacitor Present
CAPTEST_TIME
CAPTEST_TIME
Figure 11. V
Figure 10. V
Section
Section 2.7
2, the device will be reset within the reset delay time (t
REGA
REG
(t
CAPTEST_RATE
Capacitor Monitor
Capacitor Monitor
Time
Time
Section
2.8.
), both regulators are simultaneously disabled for a
REG
and V
REGA
Capacitor Open
Capacitor Open
). If either of the internal regulator
REG
or C
VREG_POR
REGA
MMA16xxWR
capacitor
,
19