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Summary of Contents for AMS TSL2591 EVM
- Page 1 User guide TSL2591 EVM TSL2591 Light-To-Digital High Sensitivity Ambient Light Sensor...
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Page 2: Table Of Contents
Content Establishing basic functionality .................... 4 TSL2591 EVM graphical user interface (GUI) ..............5 Software overview ........................ 5 2.1.1 Input side, “Functional” tab ....................7 2.1.2 Input side, “Register” tab ...................... 8 2.1.3 Output side, “Register” tab ....................10 2.1.4 Output side, “Functional”... - Page 3 TSL2591 The TSL2591 is a very-high sensitivity light-to-digital converter that transforms light intensity into a digital signal output capable of direct I2C interface. The device combines one broadband photodiode (visible plus infrared) and on infrared-responding photodiode on a single CMOS integrated circuit.
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Page 4: Establishing Basic Functionality
Establishing basic functionality The software should be started using the desktop icon or by double clicking the DigitalLightSensor.exe file from the installation directory. The default installation directory, depending on the device and the operating system you are using, is: C:\Program Files\ \TSL2591EVM Windows 32 bit operating systems C:\Program Files (x86)\ \TSL2591EVM Windows 64 bit operating systems... -
Page 5: Tsl2591 Evm Graphical User Interface (Gui)
.com, there should be enough information to allow evaluation of the TSL2591 device. TSL2591 EVM graphical user interface (GUI) Software overview On initialization the software displays two windows – a smaller “Digital Light Sensor” window and a larger window containing controls pertinent to the device connected. - Page 6 This window has inputs organized on the left, and outputs organized on the right. Values for register variables may be set using multiple techniques. The Functional tab is commonly used to quickly evaluate the device with nominal settings. The Input Register tab allows the register settings to be changed, and the Output Register tab allows registers to be viewed.
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Page 7: Input Side, "Functional" Tab
field names will change in the output beginning at the time of the change. The default log file name will be based on the values in #2 and #3 at the time the log file is written. Clear –The Clear button will flush the previous optical sample readings and reset the elapsed time indicator (see #7). -
Page 8: Input Side, "Register" Tab
thus the full-scale output of the TSL2591 is 65,535 (16-bits). If the integration time is set less than 172ms, however, the dynamic range of the device will be limited to the following: Integration Time > 172ms Saturation = 65,535 Integration Time < 172ms Saturation = ((Integration Time / 2.7) x 1024) – 1 2.1.2 Input side, “Register”... - Page 9 • ATIME Register (0x01) controls the ALS integration time. The actual time is: (256-ATIME) * 2.72 mS Note: The column on the right is the computed value for ATIME and is always correct. Sometimes the value shown in the list box will be one of the preselected values but it has not been selected.
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Page 10: Output Side, "Register" Tab
• ALS Interrupt High Threshold (0x06, 0x07) – High light threshold for ALS interrupt. AIHTL (0x06) – The lower 8 bits of the 16 bit high threshold value. AIHTH (0x07) – The upper 8 bits of the 16 bit high threshold value. •... -
Page 11: Output Side, "Functional" Tab
• Status (0x13) – Internal status. Interrupts active (2 bits) and ALS valid bits are here. The contents of the register is decoded as follows: “ALS OK” or “ALS Not OK” will be displayed based on the AVALID bit. Interrupts “AINT True”... -
Page 12: Output Side, "Plot" Tab
Designer’s Notebooks For additional information regarding the TSL2591, please refer to the respective datasheet. For information regarding the installation of the TSL2591 EVM host application please refer to the Quick Start Guide. Designer’s Notebooks dealing with various aspects of optical measurement and optical measurement applications are available. - Page 13 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: TSL2591EVM...
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