ADBM-A350-200 Avago Technologies US Inc., ADBM-A350-200 Datasheet - Page 8

• Manufacturer Part Number: ADBM-A350-200
• Description: Vigor Colossus OFN Module
• Manufacturer: Avago Technologies US Inc.

Specifications of ADBM-A350-200

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Power on Reset (POR) During Power Cycling
t
for a valid power on reset to happen when the sensor is
powered up from 0V to VDD. At condition whereby the
VDD of the sensor is cycled from VDD to 0 V and then to
VDD again, the two parameters that govern a valid power
on reset are v
Figure 3. Power on Reset during power cycling
Power management modes
The ADBM-A350 has three power-saving modes. Each
mode has a diff erent motion detection period, aff ecting
response time to sensor motion (Response Time). The
sensor automatically changes to the appropriate mode,
depending on the time since the last reported motion
(Downshift Time). The parameters of each mode are
shown in the following table.
8
Mode
Rest 1
Rest 2
Rest 3
VRT
is the power supply (VDD) rise time specifi cation
v
OFF
0V
OFF
Response Time
(nominal)
19.5 ms
96 ms
482 ms
and t
t
VRT
t
0V
OFF
OFF.
t
Refer to timing diagram below.
VRT
VDD
Downshift Time
(nominal)
250 ms
9.5 s
582 s
VDD
EVENT_INT Pin
The Event_Int pin is a level-sensitive interrupt output that
is used to trigger the host micro-controller when one of
these events occurs:
 FPD – A change in fi nger state (fi nger on to fi nger off
 Soft Click – Soft Click is detected
 Button – Mechanical button is asserted or de-asserted
 Motion – Motion delta is present.
A read to event register is required to determine the
specifi c event that toggles the interrupt for user to act
upon.
The EVENT_INT will be reset after the user responds to it
by reading the respective event status register:
 FPD – reading FPD_STATUS register (0x7a)
 Soft Click – reading SC_STATUS register (0x7f )
 Button – reading BUTTON_STATUS register (0x12)
 Motion – reading DELTA_X and DELTA_Y registers until
GPIO Pin
The GPIO pin is a level-sensitive input/ output that can be
used as
 FPD output – to display FPD status
 Pulse Width Modulated (PWM) output – to control LED
 Dome/ Button click input – can be connected to a
Refer to A350 Firmware Design Guide for more details and
settings of registers for these features.
LED Mode
For power savings, the LED will not be continuously on.
ADBM-A350 will fl ash the LED only when needed.
and vice versa) is detected
motion are cleared.
driver to enable illumination feature in a product eg
mobile phone
dome switch that provides an input to the sensor and
when a click is detected, sensor can respond by trigger-
ing button interrupt and channel the interrupt status
through EVENT pin.