QT60326-AS Atmel, QT60326-AS Datasheet
QT60326-AS
Specifications of QT60326-AS
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QT60326-AS Summary of contents
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... QM EY ATRIX MOSI 1 MISO 2 QT60166 SCK 3 QT60246 /RST 4 QT60326 Vdd 5 Vss 6 QT60486 XT2 7 XT1 8 TQFP- Automotive panels Machine tools Part Number QT60166-AS QT60246-AS QT60326-AS QT60486-AS Copyright © 2003 QRG Ltd QT60486-AS 0.07/1103 6 XX ™ Y3B 32 Y2B 31 Y1B 30 Y0B 29 Vdd 28 Vss 27 Vdd ...
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Overview QMatrix devices are digital burst mode charge-transfer (QT) sensors designed specifically for matrix geometry touch controls; they include all signal processing functions necessary to provide stable sensing under a wide variety of changing conditions. Only a few external ...
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The signal swing from the smallest finger touch should preferably exceed 10 counts, with 15 being a reasonable target. The signal threshold setting (NTHR) should be set to a value guaranteed to be less than the signal swing caused by ...
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Wiring Table 2.1 - Pin Listing Applies to all devices Pin Function 1 MOSI 2 MISO 3 SCK 4 /RST 5 Vdd 6 Vss 7 XT2 8 XT1 SMP 13 Y3A 14 ...
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Figure 2.1 Wiring Diagram SCOPE /SS MOSI MISO SCLK Rx Tx WAKE SYNC DRDY 4.7K 16 MHz 3-TERM RESONATOR 10K VDD 100 Note: Use either UART or SPI comm port but not both. Device autodetects communication type depending on which ...
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Serial Communications These devices can use either SPI or UART communications modes; it cannot use both at the same time. The mode selected depends on which mode is used first to communicate with the part. The host device always ...
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The MISO pin on the QT floats in 3-state mode between bytes when /SS is high. This facilitates multiple devices on one SPI bus. Null Bytes: When the QT responds to a command with one or more response bytes, the ...
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Control Commands Refer to Section 5.1, page 11 for further details. The devices feature a set of commands which are used for control and status reporting. The host device has to send the command to the QT60xx6 and await ...
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Report Detections for All Keys - 0x07 Returns six bytes which indicate all keys in detection if any bitfield. The first byte returned is the MSByte. Key 0 reports in LSByte bit 0. A CRC byte is ...
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Cal Key ‘k’ - 0xck This command must be repeated 2x within 100ms or the command will fail; the repeating command must be sequential without any intervening command. This command functions the same as 0x03 CAL command except this ...
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Summary table of commands Hex Name Description 0x00 Null command Used to get data back in SPI mode Enter Setups, stop sensing; followed by block load of binary Setups of length ‘nn’. Command must be repeated 2x consecutively without ...
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Hex Name Description 0x0a Deltas for all Sends back all key delta signals from ref 0x0b Error flags for all Error bit fields 0x0c FMEA status FMEA bitfield lines Returns Setups block area followed by CRC.. Scanning ...
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Setups The devices calibrate and process all signals using a number of algorithms specifically designed to provide for high survivability in the face of adverse environmental challenges. They provide a large number of processing options which can be user-selected ...
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In this latter case, the sensor should compensate for ...
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After the PRD interval has expired and the auto- recalibration has taken place, the affected key will once again function normally. PRD is set on a per-key basis. PRD Typical values (0.7s to 2.0s) PRD Default value: ...
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External fields can cause interference leading to false detections or sensitivity shifts. Most fields come from AC power sources. RFI noise sources are heavily suppressed by the low impedance nature of the QT circuitry itself. Noise such as from 50Hz ...
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Setu ps Block Table Block data is sent from the host to the block of hex data. The block can only be loaded in Setups mode following two sequential 0x01 commands. Refer also to Section 6.5, ...
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LED Function Control Byte Bits See also page 16. The LED pin can be used to indicate a variety of things in combination. The LED control byte controls which states make the LED pin active. The active state can ...
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Setups Block Summary Typical values: For most touch applications, use the values shown in the outlined cells. Bold text items indicate default settings. Index NTHR PTHR NDRIFT PDRIFT Number counts counts secs secs Scope Per key Per key Per ...
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Specifications 7.1 Absolute Maximum Electrical Specifications Operating temp ...
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... Min Max Notes 9.90 10.10 SQ 11.75 12.21 SQ 0.09 0.20 0.45 0.75 0.05 0.15 - 1.20 0.30 0.45 0.80 0.80 BSC 8.00 8.00 BSC 0 7 TQFP Part Number QT60166- QT60246- QT60326- QT60486- Inches Min Max Notes 0.386 0.394 SQ 0.458 0.478 SQ 0.003 0.008 0.018 ...
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Appendix - CRC Algorithms 8.1 8-Bit CRC Software C Algorithm // 8 bits crc calculation. Initial value polynomial = data bit number; int eight_bit_crc(int crc, int data) { ...
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Tel: +44 (0)23 8056 5600 Fax: +44 (0)23 8045 3939 The specifications set out in this document are subject to change without notice. All products sold and services supplied by QRG are subject to our Terms and Conditions of ...