ATLab¡¯s
second
generation
touch
sensor
IC,
DPI7
(ATA2508)
provides
a
variety
of
applications
with
higher
flexibility
and
better
performance
by
new
features
including
advanced
AIC¢â,
APIS¢â,
touch
strength
output,
sound
generation
and
LED
controls
via
I
C
communication.
Its
internal
registers
feature
programmability
to
decrease
hardware
design
complexity.
Its
advanced
AIC¢â
(Automatic
Impedance
Calibration)
function
can
be
easily
configured
to
support
different
sensitivity
between
channels
or
to
change
calibration
|
|
interval
or
to
stop/resume
by
a
host.
It
also
provides
a
strong
new
feature
APIS¢â
(Adjacent
Pattern
Interference
Suppression)
to
eliminate
adjacent
key
or
pattern
interference.
In
addition,
capabilities
including
touch-strength
outputs,
sound
generation
and
twelve
general
purpose
DIOs
meet
customer¡¯s
specific
requirements
which
give
customers
more
flexibility
and
higher
values. |
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|
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Patented
fully
digital
architecture
|
Twelve
channels
(40QFN,30SSOP),
nine channels
(32QFN,24SSOP)
and six
channels(20SSOP)
available |
Programmable
registers
to characterize
applications |
I2C
for the
host interface |
Different
sensitivity
assignment
to each
channel
for design
flexibility |
Configurable
AIC¢â (Automatic
Impedance
Calibration) |
Eight
bit resolution
of touch
strength
data (256
step) |
APIS¢â:
Mode1, Mode2,
Mode3 (Adjacent
Pattern
Interference
Suppression) |
Configurable
twelve DIO
pins as
direct touch
outputs,
extended
GPIOs or
external
interrupt
inputs
|
Specifications |
Touch
Input
Count:
12 Channel
and 9
Channel
|
Number
of DIOs:
up to
12 |
Interface:
I2C |
Operating
Voltage:
2.5V ~
5.5V |
Current:
0.12mA
|
Response
time:
0.2mSec
~ 40mSec |
ESD
level:
higher
then 15KV(set),
8KV( Touch
input,
PKG) |
Calibration
Configurable
|