E6645 Atmel, E6645 Datasheet

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E6645

Manufacturer Part Number
E6645
Description
BOARD EVALUATION FOR QT60645
Manufacturer
Atmel
Series
Quantumr
Datasheet
1.E6325.pdf (5 pages)

Specifications of E6645

Rohs Status
RoHS non-compliant
Other names
427-1048
E6325 / E6485 / E6645 USER'S GUIDE
These boards are designed for
Overview
evaluation and prototyping of the
QT60325, QT60485 and
QT60645 ‘glass touch’ matrix ICs.
They include all circuitry and
materials required to make a fully
functioning through-panel matrix
touch control. This board has an
RS-232 serial interface that allows
connection to a PC for function
setup and data viewing.
The board makes use of QmBtn
software, which is included.
The QT chip in these boards use
an SPI interface which can
communicate at high speed using
a synchronously clocked datastream. This is useful for embedded applications where the
device is a slave to a host microcontroller.
The board contains a SPI to UART converter processor which translates between the two
interface styles. It is possible to communicate with the QT chip using either the SPI or
UART interfaces (UART via RS-232 or via direct UART-to-UART communications).
A 16-pin ribbon cable header connector on the end of the board allows connection to a
matrix panel. A 64-key sample matrix and plastic panel are supplied with the E664 and
E648, and a 32-key panel and matrix are supplied with the E632.
Dwell time, which affects susceptibility to surface moisture, can be adjusted via an
on-board potentiometer.
LED status indicators show detection and error states.
PCB artwork for the board can be obtained free of charge by contacting Quantum.
For more detailed information about this product refer to the QT60645 datasheet.
Materials
1x E6xx Eval board
Provided
1x Matrix Flex circuit (64 keys for E664 and E648, 32 keys for E632)
1x Plastic panel
1x RS232 serial cable
10x Rubber feet
1x 9V battery snap
1x QmBtn user guide
1x CD Rom with QmBtn software (or download latest from the website)
You will also need: An 8 to 20V clean DC power supply, and a PC running any recent
version of Windows (98, 98SE, NT4, 2000, XP) upwards, with a free serial com port (Com
1 or Com 2).
E664/R1.0 03/02

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E6645 Summary of contents

Page 1

... CD Rom with QmBtn software (or download latest from the website) You will also need 20V clean DC power supply, and a PC running any recent version of Windows (98, 98SE, NT4, 2000, XP) upwards, with a free serial com port (Com 1 or Com 2). E6325 / E6485 / E6645 USER'S GUIDE E664/R1.0 03/02 ...

Page 2

Preparation You need to prepare the matrix and board before you can plug it in with the following steps: 1. Adhere the supplied flex circuit to a plastic panel (one of each supplied). Tip: Roll the flex circuit onto the ...

Page 3

Board Power Connector This screw terminal strip is used to power the board. The voltage should be between +8 Details and +20 volts DC. Power should be free from switching noise and short-term fluctuations for best performance. SPI Port This ...

Page 4

Sync pulses should be spaced no more than 49ms apart to prevent this from happening. The most common type of noise is power-line related. If there is a lot of random signal noise on the keys (consistently ...

Page 5

Trouble- Will not communicate Shooting with the PC Board will not calibrate Noisy or erratic signal Bad serial connections Check/replace serial cable Bad or conflicting Comm port on PC Shut down other tasks that may also be using the same ...

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