E1081 Atmel, E1081 Datasheet
E1081
Specifications of E1081
Related parts for E1081
E1081 Summary of contents
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This datasheet is applicable to all revision 1 chips The QT1081 is an improved, lower cost, simplified circuit version of the popular QT1080 sensor IC. The QT1081 is designed for low cost appliance, mobile, and consumer electronics applications. QTouch™ ...
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Contents 1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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Overview Differences With QT1080 1.1 The QT1081 is a general replacement device for the highly popular QT1080. It has all of the same features as the older device but differs in the following ways: Rs resistors on each channel ...
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The QT1081 has two different AKS groupings of keys, selectable via option resistors. These groupings are: AKS operates in two groups of four keys. AKS operates over all eight keys. These two modes allow the designer to provide AKS while ...
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Wiring 32-QFN Name Pin /RST 3 Vdd 4 OSC 5 n/c 6 SNS0 7 SNS0K 8 SNS1 9 SNS1K 10 SNS2 11 SNS2K 12 SNS3 13 SNS3K 14 SNS4 15 SNS4K 16 SNS5 17 SNS5K 18 ...
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Vunreg Voltage Reg *4.7uF Keep these parts close to the IC MOD_1 Vdd / Vss R KEY 3 POL Vdd / Vss R KEY 4 OUT_D Vdd / Vss KEY 5 SL_0 Vdd / Vss KEY 6 ...
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Vunreg Voltage Reg *4.7uF *4.7uF Keep these parts close to the IC R SNS3 C KEY 3 R SNS4 C KEY 4 10K R SNS5 C KEY 5 10K R SNS6 KEY 6 10K SMR R SNS7 ...
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Device Operation 2.1 Start-up Time After a reset or power-up event, the device requires 300ms to initialize, calibrate, and start operating normally. Keys will work properly once all keys have been calibrated after reset. 2.2 Option Resistors The option ...
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Operation in low power mode is governed by the state of the LP input and whether at least one key has a confirmed touch. If the LP input constant low level, then the QT1081 will remain in ...
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In many applications desirable to sense touch at high speed. Examples include scrolling ‘slider’ strips or ‘Off’ buttons possible to place the device into a ‘Fast Detect’ mode that usually requires under 10ms to respond. This ...
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Design Notes 3.1 Oscillator Frequency The QT1081’s internal oscillator runs from an external resistor network connected to the OSC and SS pins, as shown in Figures 1.1 and 1.2, to achieve spread-spectrum operation. If spread-spectrum mode is not required, ...
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Specifications 4.1 Absolute Maximum Specifications Operating temperature, Ta ...
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Signal Processing Vdd = 5. recommended 5pF 1nF Description Detection threshold Detection hysteresis Anti-detection threshold Anti-detection recalibration delay Detect Integrator filter, normal mode Detect Integrator filter, ‘fast’ mode Max On-Duration Normal drift compensation ...
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Average Idd Curves All Idd curves are average values, under the following conditions 5pF circuit. Refer to page 9 for more information about optimization of LP modes. Full speed operation QT1081, average Idd (full ...
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Low Power operation (non-optimized) QT1081, average Idd (100ms LP operation) 800.0 600.0 400.0 200.0 0 burst length (ms) QT1081, average Idd (340ms LP operation) 200.0 150.0 100.0 50.0 0 burst ...
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Mechanical - 32-QFN Package PIN 1 Dimensions In Millimeters Symbol Minimum Nominal Maximum A 0.70 A1 0. 0.20 REF D 4.90 D2 3.05 E 4. 0.30 y 0.00 L1 0.00 ...
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Part Marking QT1081 ©QRG 1 Pin 1 Identification 4.10 Moisture Sensitivity Level (MSL) MSL Rating MSL3 lQ QRG Part No. QRG Revision Code YYWWG run nr. ‘YY’ = Year of manufacture ‘WW’ = Week of manufacture ‘G’ = Green/RoHS ...
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Datasheet Control 5.1 Changes Changes this issue (datasheet rev 04) Changes throughout to remove 48-SSOP package. Section 5: new. 5.2 Numbering Convention Chip Revision (Where M = Major chip revision, A minor chip revision (N) is defined as a ...
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NOTES QT1081_1R0.04_0307 ...
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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 QRG’s Terms and Conditions of ...