PIXART AMRI-5305

AMRI – 5305
Low Power 10 Touch
Controller
No. 5, Innovation Road I,
HsinChu Science Park,
HsinChu, Taiwan, R.O.C
Tel: 886-3-5795317
Copyright © PixArt Imaging Inc. All rights reserved.
AMRI-5305: Low Power 10 Touch Controller
Description
A touch-screen system consists of an LCD or
OLED display, a touch-sensitive panel, a
protective cover plate and a touch controller.
The AMRI-5305 is a low-power, 10-touch
controller designed specifically to provide a
touch screen system with high report rate, touch
accuracy, and responsive on-screen navigation,
with very low latency. The IC uses a mutualcapacitance measurement technique, where it
senses capacitance changes on the touch
panel, and detects multiple touch points
simultaneously.
register settings, customized configurations of
drive/sense mapping, buttons, sliders and
haptics. There is no overlap between the 30
kbytes and 2 kbytes spaces.
The controller IC operates from a single 1.7 –
2.0 V or 2.5 – 3.6 V supply voltage, with I/O
voltage from 1.6 to 3.6 V. The part is housed in
a 6 x 6 x 0.55 mm 48-pin TQFN package.
Features
The AMRI-5305 touch controller is designed
specifically for applications in a high-noise
environment. It is robust against common-mode,
display, and RF noise; thereby eliminating the
need for a Ground shield on the touch panel,
reducing
system
cost.
Its
high-density
drive/sense lines support touch screens up to 5”,
with 10 simultaneous touch points. A passive
stylus is also supported. Larger screens can
also be supported where fine-cell spacing is not
a priority.

Multi-touch navigation (up to 10 points)

Support for up to 5” screen (larger
depending on application)

Adjustable touch thresholds for up to 1.5
mm PMMA or PC curved lens

Cover lens: up to 2 mm glass or 1.5 mm
PMMA

Gesture support

Buttons and sliders support

Opens/shorts test support
The low-power design is ideal for extending
battery life. Programmable power modes
include:

Internal flash for saving user settings

1200 DPI resolution at full screen

Greater than 200 Hz configurable report rate

Fast response time: < 10 ms

SPI/I2C host interface

Operating temperature: -20 to +70 C

Haptics output, support for up to 10
waveforms, and a variety of triggers

Lead-free RoHS compliant
Run mode
[150 Hz report rate, 5 TPs]
Run mode
[80 Hz report rate, 1 TP]
Shutdown
60 mW
32 mW
145 μW
Additional programmable Idle/Rest modes are
also available.
There are 30 kbytes of Flash memory for Pixart
supplied based-line operational code storage. In
addition, there are 2 kbytes of Flash memory for
application-specific data storage, such as saved
Applications

Smart phones

Portable Media Players

Mobile Internet Devices (MID)

Personal Navigation Devices (PND)

Tablet PC’s
AMRI-5305: Low Power 10 Touch Controller
Figure 1: System Block Diagram
Figure 2: Functional Block Diagram