AMS TMD2636 EVM User manual

User Guide
UG001002
TMD2636
TMD2636 EVM
Miniature Proximity Sensor Module
v1-00 •2021-Jan-18

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TMD2636
Content Guide
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Content Guide
1Introduction ................................... 3
1.1 Kit Content....................................................3
1.2 Ordering Information ....................................3
2Getting Started .............................. 4
3Hardware Description ................... 5
4Software Description .................... 6
4.1 Connect Software to Hardware....................6
4.2System Menus..............................................7
4.3 System Level Controls .................................9
4.4 Auto Polling ..................................................9
4.5 Device ID Information...................................9
4.6 Log Status and Control Information............10
4.7 “Prox” Tab...................................................11
5Resources ....................................14
6Revision Information...................15
7Legal Information.........................16

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TMD2636
Introduction
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1 Introduction
The TMD2636 evaluation kit comes with everything needed to evaluate the TMD2636. The device
features advanced proximity measurement in a tiny and extremely thin optical land grid array module.
1.1 Kit Content
Figure 1:
Evaluation Kit Contents
No.
Item
Description
1
TMD2636 Daughter Card
PCB with TMD2636 sensor installed
2
EVM Controller Board
Used to communicate USB to I2C
3
USB Cable (A to Micro-B)
Connects EVM controller to PC
4
Flash Drive
Include application installer and documents
1.2 Ordering Information
Ordering Code
Description
TMD2636 EVM
Miniature Proximity Sensor Module

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Getting Started
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2 Getting Started
The software should be installed prior to connecting any hardware to the computer. Follow the
instructions found in the Quick Start Guide (QSG). This loads the required driver for the USB interface
and the device’s graphical user interface (GUI).
The balance of this document identifies and describes the controls available on the GUI. In
combination with the TMD2636 datasheet, the QSG and application notes available on the ams
website, www.ams.com, there should be enough information to allow evaluation of the TMD2636
device.

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Hardware Description
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3 Hardware Description
The hardware consists of the EVM Controller, the TMD2636 EVM daughter card, and a USB interface
cable. The EVM controller board provides power and I2C communication to the daughter card through
a seven-pin connector. When the EVM controller is connected to the PC through USB, a green LED
lights on to indicate the system is getting power.
For schematics, layout and BOM information please see the documents included with the install
located in the TMD2636 EVM folder (All Programs -> ams -> TMD2636 EVM -> Documents).
Figure 2:
Evaluation Kit Hardware

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Software Description
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4 Software Description
The main window (Figure 3) contains the system menus, system level controls, device information and
logging status. The main window contains only one tab “Prox” to configure the parameters to run
proximity. The prox data and its average data is also plotted in this tab. The application polls the prox
raw data continuously.
Figure 3:
GUI Main Window
4.1 Connect Software to Hardware
On startup, the software automatically connects to the hardware. On successful initialization, the
software displays a main window, containing controls pertinent to the connected device. If the software
detects an error, an error window appears. If “Device not found or is unsupported” appears, verify the
correct daughterboard is properly connected to the EVM controller board. If “Cannot connect to EVM
board” appears, verify the USB cable is connected. When the EVM controller board is connected to
the USB, a green LED lights on power up to indicate the USB cable is connected and providing power
to the system. The LED will remain lit until the any software application opens the controller. The light
will then be switched off so that it will not interfere with any light measurements.
If the EVM board disconnects from the USB bus while the program is running, it displays an error
message and then terminates. Reconnect the EVM board and restart the program.

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4.2 System Menus
At the top of the window there are pull-down menus labeled “File”, “Log”, and “Help”. The File menu
provides basic application-level control. The Log menu controls the logging function, and the Help
menu provides version and copyright information for the application.
4.2.1 File Menu
The File menu contains the following functions:
Figure 4:
File Menu
The Reread Registers function forces the program to re-read all of the control registers from the
device and display them on the screen. This does not read the output data, because the program
reads those registers continually while it is running.
Click on the Exit command to close the main window and terminate the application. Any unsaved log
data is cleared from memory. The application can also be close by clicking the red “X” in the upper
right hand corner.
4.2.2 Log Menu
The Log menu controls the logging function and saves the log data to a file. Log data accumulates in
memory until discarded or written to a data file.
Figure 5:
Log Menu
Click Start Logging to start the logging function. Each time the program polls the output information
from the device, it creates a new log entry showing the raw data values, the values of various control

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registers, and the values entered by the user into the text fields near the bottom right corner of the
window.
Click Stop Logging to stop the logging function. Once logging stops, the user may store the data in a
file, or continue collecting additional data by clicking Start Logging again.
The Log a Single Entry command causes logging to start, collect one single entry, and immediately
stop again. This function is not available when logging is already running.
Click Clear Log to discard any previously collected data. If there is data in memory, which has not
been saved to disk, this function displays a prompt asking to verify it is OK to discard the data. If the
log is active when this function executes, the log continues running after the existing data is discarded.
Click Save Log to save the collected log data to a csv file. This stops the logging function, if it is
active, and displays a file dialog box to specify where to store the logged data. The Log Status and
Control Information section below describes the default file name, but you may change the file name if
desired.
4.2.3 Help Menu
The Help menu contains a single function: About.
Figure 6:
Help Menu
The About function displays a dialog box (Figure 7) showing the version and copyright information for
the application and library. Click the OK button to close this window and continue.

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Figure 7:
About Window
4.3 System Level Controls
Immediately below the top menu bar there are checkboxes used to control the system level functions
of the TMD2636 device.
The Power On checkbox controls the PON function of the TMD2636. When this box is checked, the
power is on and the device is running measurements according the settings in the Prox tab. When this
box is unchecked, the power is off and the device does not operate.
The Prox Enable checkbox enable the proximity measurement when checked and disable proximity
measurement when unchecked.
4.4 Auto Polling
The application automatically polls the TMD2636 raw data of the Prox. The Poll Interval at the right
upper corner of the form displays the actually time between reads of the device.
4.5 Device ID Information
The lower left corner of the window displays the ID number of the EVM Controller board, identifies the
device being used.

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4.6 Log Status and Control Information
The lower right corner of the window contains status information and controls for the logging function:
Figure 8:
Logging Status
This section contains text boxes that are stored in the log file data and used to build the file name for
the log file. If the data in these fields are changed, the new values are stored with any new data
logged. The default file name is based on these values at the time the log file is written. If nothing is
entered in these boxes they default to a period (“.”).
Sample default file name:
TMD2636_1-2-3_Log_HH_MM_SS.csv
From Application
From User Input
The Count value displayed is a count of the number of samples currently in the log buffer.
The Elapsed Time value indicates the elapsed time since data logging started.
The numeric box in the bottom right-hand corner sets a limit to the size of the collected dataset. You
may select a value from the pull-down list, or enter a value manually. When the number of entries in
the log reaches this value, the program will automatically stop logging and display a file dialog box to
specify where to store the logged data. You may change the file name if desired. The maximum value
that may be entered in this field is 32000.