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PixArt Imaging Inc.

PCT1339 Product Datasheet

Multi-Touch Capacitive Touch Controller

PixArt Imaging Inc. http://www.pixart.com

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Version 1.0 |11 Apr 2016

Introduction

Overview

flexible lines to connect to touch panel. The 4 flexible lines can be set to drive or sense function that means the cell

resolution can be 20x19~24x15 according to user’s preferred ID geometry. All drive and sense lines can be reordered to

provide panel routing flexibility, and each drive/sense line can be independently switched on/off to match the touch

screen active areas.

The controller applies a series of excitation signals to the drive electrodes. The signals are coupled to the sense lines via

mutual capacitance. Touching anywhere on the panel with a finger alters the capacitance at that specific location.

PCT1339 multi-touch controller can simultaneously resolve and track up to five touches. The high report rate allows the

host to track rapid touches and movements with less than 15ms latency. The embedded processor filters the data,

identifies the touch coordinates and gesture and then report to the host at > 120 Hz rate. However, PCT1339 FW does

noisy.

Block Diagram

Configuration

Registers

Firmware

Embed Flash

Nevigation

Accelator

Sense

Drive

Regulator

I/O

HOST

Reset

Interrupt

I2C/SPI

VDDIO

V_IN

MCU

50MHz

OSC

Figure 1. PCT1339 Functional Block Diagram

Up to 6inch panel

16:9~4:3 support

PCT1339

Touch Controller

Host Controller

20~24 drive lines

15~19 sense lines

I2C

Figure 2. System Block Diagram