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Description
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DPS7
(ATA2501)
using
ATLab’s
proprietary
impedance
matching
technology
not
only
enables
an
easy
realization
of
navigation
and
access
to
contents
in
portable
devices
such
as
mobile
phones,
MP3
players
and
PDA’s,
but
also
is
able
to
replace
many
mechanical
buttons
on
electronic
products.
One
controller
detects
12
sensor
inputs
of
human
finger
contact
and
transmits
the
result
to
MCU
through
serial
interface
at
the
speed
of
up
to
500
times
per
second.
For
computer
mouse
scroll
application,
ATLab’s
patented
navigation
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engine
is
included
to
calculate
direction
and
magnitude
of
finger
gesture.
Since
impedance
matching
is
very
difficult
to
cope
with
user’s
various
applications,
ATA2501
provides
automatic
impedance
calibration
(AIC)
function
that
will
automatically
adjust
contact
sensitivity
for
maximum
design
flexibility.
Another
benefit
of
using
ATA2501
is
its
low
power
consumption
capability.
It
only
consumes
less
than
120uA
during
normal
operation.
It
can
also
be
suspended
when
device
is
in
the
idle
state
in
order
to
save
more
power.
There
are
2
package
types
available:
48
TQFP
and
40
QFN
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Patented
fully digital
architecture
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Up
to twelve
contact sensor
inputs used
for scroll,
navigation
and selection |
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Versatile
interfaces
available:
Serial Interface,
Direct I/O
Interface
and Quadrature
interface |
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Proprietary
navigation
engine included
for mouse
scroll application |
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Supports
user’s own
sensor layout
for maximum
design flexibility |
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Automatically
adjusts sensor
sensitivity
to cope with
various operating
environment |
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No
external clock
source is
required |
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Supports
Idle and sleep
mode for power
saving |
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High
reliable ESD
input pads |
Lead
free package
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Specifications |
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Touch
Input Count:
12 Channel
and 9 Channel
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DIO
Count: up
to 12 |
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Interface:
Serial interface |
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Operating
Voltage: 2.7V
~ 3.5V |
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Current: 0.12mA |
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Response
time: 2mSec |
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ESD
level :
higher then
15KV(set),
8KV( Touch
input, PKG) |
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Sensitivity
Adjustment
by Hardware
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