MAX31730 Evaluation Kit
Evaluates: MAX31730
General Description
The MAX31730 evaluation kit (EV kit) provides
the hardware and software graphical user inter-
face (GUI) necessary to evaluate the MAX31730
3-channel remote temperature sensor in a
μMAXM
or TDFN package. The EV kit includes a MAX31730
installed, as well as three external diode-connected tran-
sistors and a USB-to-SMBus/I
2
C interface.
Features
●
Easy Evaluation of the MAX31730
●
Three External Diode-Connected Transistors
●
EV Kit Hardware is USB Powered (USB Cable
Included)
●
USB HID Interface
●
Windows XP
®
- and Windows
®
7-Compatible
Software
●
RoHS Compliant
●
Proven PCB Layout
●
Fully Assembled and Tested
µMAX is a registered trademark of Maxim Integrated
Products, Inc.
Windows and Windows XP are registered trademarks
and registered service marks of Microsoft Corporation.
EV Kit Contents
●
●
Mini USB cable
Assembled circuit board including MAX31730
Ordering Information
appears at end of data sheet.
MAX31730U EV Kit Photo
19-6768; Rev 1; 6/15
MAX31730 Evaluation Kit
Evaluates: MAX31730
EV Kit Files
FILE
MAX31730EVKitSetup.EXE
Note:
The .EXE is downloaded as a .ZIP file.
DESCRIPTION
Application Program
Quick Start
Required Equipment
●
●
●
●
MAX31730 EV Kit Hardware
Windows XP or Windows 7 PC
Spare USB port
Mini USB cable (included)
7)
8)
Follow the instructions on the installer and once
complete, click
Finish.
The default location of the GUI
is in the program files directory.
When the GUI appears, the text in the bottom
right-hand corner should display
EV Kit Hardware
Connected.
The com LED (D21) on the EV kit board
should turn green.
Note:
In the following sections, software-related items are
identified by bolding. Text in
bold
refers to items directly
from the install or EV kit software. Text in
bold and under
lined
refers to items from the Windows operating system.
Detailed Description of Software
Software Startup
If the MAX31730 EV kit is connected when the software
is opened, the software first initializes the hardware to
communicate. The software then searches for all slave
addresses on the I
2
C bus and connects to the first valid
slave address. The GUI displays
EV Kit Hardware
Connected
in the bottom right-hand corner. If the EV kit
is not connected on software startup, the GUI populates
with default EV kit values. Once the EV kit is connected,
the GUI executes the sequence above.
Procedure
1)
2)
3)
The EV kit is fully assembled and tested. Follow the steps
below to verify board operation:
Ensure that jumpers/shunts (J22, J1–J3) are installed.
Set the EV kit hardware on a nonconductive
surface to ensure that nothing on the PCB gets shorted
together.
Prior to starting the GUI, connect the EV kit
hardware to a PC using the supplied Mini-USB cable, or
equivalent. The power LED (D20) should be green
and the com LED (D21) should be red and slowly flash
orange.
Windows should automatically begin installing the
necessary device driver. The USB interface of the
EV kit hardware is configured as an HID device and
therefore does not require a unique/custom device
driver. Once the driver installation is complete, a
Windows message appears near the
System
Icon
menu indicating that the hardware is ready
to use. Do not attempt to run the GUI prior to this
message. If you do, you must close the application and
restart it once the driver installation is complete. On
some versions of Windows, administrator privileges
may be required to install the USB device.
Once the device driver installation is complete.
Visit
www.maximintegrated.com/evkitsoftware
to
download the latest version of the EV kit software,
MAX31730EVKitSetup.ZIP. Save the EV kit software
to a temporary folder.
Unzip the .ZIP file and double-click the .EXE file to run
the installer. A message box stating:
The publisher
could not be verified. Are you sure you want to run
this software?
may appear. If so, click
Yes.
Menu and Status Bar
4)
5)
6)
The
File
menu item contains save and load options. To
save the current GUI configuration, select
Save Config
or
Save Config As.
This saves all the configuration registers
to an XML file. If a device is connected, this reads and
saves data directly from the device; otherwise, it saves
the configuration that is currently displayed on the GUI.
Load Config
writes all the configuration data stored in the
XML file to the device and then performs a read to update
the GUI with the new values. If a device is not connected,
Load Config
writes to a virtual device and displays the
data on the GUI. The
Device
menu item allows the user
to connect to a desired device.
Find Slave Addresses
searches for all slave addresses connected to the I
2
C
bus. To select a device, click
Select Slave Address
and
all the slave addresses found are shown and are select-
able. The
Options
menu contains the
Polling Rate
option
and the
Log Polling Data to File
option. The
Polling
Rate
sets the delay between reads. To save the polling
data to a CSV file, check the
Log Polling Data to File
option and then click
Start Polling
to select a name for
the file and begin reading.
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MAX31730 Evaluation Kit
Evaluates: MAX31730
Status Log
The status log below the tabs displays all the actions the
GUI performs. Whenever an SMBus command is read or
written, the action is confirmed by the log. The log can be
cleared by pressing the
Clear
button.
Status Tab
The
Status
tab sheet (Figure
1)
displays all the
current temperatures and the fault status. All values in the
Temperature Status
group box are read when the tab is
selected. To read the values again, press the
Read Temp
Status
button.The
One Shot Read
button is only enabled
when the device is in standby mode by checking the
Stop
option on the
Config
tab (Figure
2).
The
Over Temp
and
Under Temp
status is read from Thermal Status, High
Temperature (32h) and Thermal Status, Low Temperature
(33h) registers. The
Diode Fault
status is read from
Diode Fault Status (36h) register. The
Temperature
column is read from the temperature registers (00h
to 07h) and the
Highest Temperature
is read from
registers 10h to 11h. To graph the temperatures, start
polling by clicking the
Start Polling
button in the menu
bar. To stop polling, press the
Stop Polling
button. Polling
automatically stops if items in the
File
or
Connection
menu are selected, or if the
POR
button is pressed. To
save the polling data to a CSV file, check
Log Polling
Data to File
in the
Options
menu before polling is started.
Figure 1. MAX31730 EV Kit Software GUI (Status Tab)
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MAX31730 Evaluation Kit
Evaluates: MAX31730
Configuation Tab
The
Config
tab sheet (Figure
2)
contains all the configura-
tion registers. All values are read when the tab is selected.
In the tables, hold the mouse over the column header to
see which register(s) the cells in the column read/write to.
The
Beta Value
column is the only column where all the
cells are read-only. If the
Extended Range
checkbox in
the
Configuration Register (13h)
group box is checked,
all the temperature values on the
Config
and
Status
tab
are updated to reflect the extended range format. The hex
values stored in these registers are not changed.
Registers Tab
The
Registers
tab sheet (Figure
3)
displays all the
registers and their current data. To read the registers,
press the
Read All
button. To write to a register, enter the
hex value in the cell and click another cell or press Enter
on the keyboard.
Figure 2. MAX31730 EV Kit Software GUI (Config Tab)
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