ST EVAL-L99DZ200 User manual

Introduction
This document describes the STSW-L99DZ200 Graphical User Interface (GUI) dedicated to run the EVAL-L99DZ200.
The EVAL-L99DZ200 evaluation board is designed for automotive door zone application and it consists in a motherboard and
a daughter board on which the L99DZ200G device is assembled. Both the boards provide electronic control modules with
enhanced power management functionalities including a standby mode. These evaluation boards are designed to drive multiple
DC motors. The STSW-L99DZ200 has been developed by using C++ and it works with a motherboard based on SPC582B60
microcontroller programmed with dedicated firmware that drives the L99DZ200G assembled in the daughter board.
STSW-L99DZ200 GUI
UM2888
User manual
UM2888 - Rev 1 - June 2021
For further information contact your local STMicroelectronics sales office.
www.st.com

1How to connect the EVAL-L99DZ200
The following figure shows how to connect the EVAL-L99DZ200 and the main HW settings. Refer to the datasheet
(see Section 11 Reference documents) for more information on the HW settings of the EVAL-L99DZ200.
Figure 1. Eval-L99DZ200 connection
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2STSW-L99DZ200 GUI installation
2.1 STSW-L99DZ200 GUI setup
1. Install FDTI drive from supplier website
2. Complete the connection (see the Figure 1. Eval-L99DZ200 connection), then power-on
3. Run Setup_GUI.exe
Figure 2. Graphic User Interface setup (1/2)
When GUI installation is finished, GUI icon link is added on your desktop and a main window is showed:
Figure 3. Graphic User Interface setup (2/2)
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STSW-L99DZ200 GUI installation
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3Main window overview
When the EVAL-L99DZ200 is connected and the USB driver is installed, the message “Board connected and
ready ….” will be displayed on the bottom left part of the main window.
Here below an overview of the main functions of the main window is reported.
Figure 4. Main window overview
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Main window overview
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Figure 5. Main window menu items
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Main window overview
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4Standard control panel
4.1 Timers section
Figure 6. Standard control window – timers section
In Figure 6. Standard control window – timers section the section of the GUI related to the configuration of the
two timers embedded in L99DZ200G is shown. For each of the two timers, the period (from 0.01 s to 2 s) and
the on time (from 0.1 ms to 20 ms) is programmable. The restart flag allows to restart the timer with the defined
settings when the SPI CSN goes from low to high (see Section 11 Reference documents). The DIR flag allows
to control the timer from DIR input (see the datasheet Section 11 Reference documents). Once the configuration
of the timers has been set, the update button allows the MCU to create and transfer to the L99DZ200G the
corresponding SPI command.
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Standard control panel
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4.2 Supply voltage monitoring section
Figure 7. Standard control window – supply voltage monitoring section
In Figure 7. Standard control window – supply voltage monitoring section the section of the GUI related to the
configuration of the supply voltage monitoring is shown.
For both Vs and Vsreg there are some flags to enable the lockout and the OV/UV shutdown. A flag to configure
the generator mode (see in the datasheet Section 11 Reference documents) is reported inside this section; the
Vsreg early warning threshold can be here configured too.
One more flag is dedicated to the enabling of the V1 CM (Icmp); see Figure 6. Standard control window – timers
section in its own datasheet (see Section 11 Reference documents).
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4.3 CAN and LIN transceivers section
Figure 8. Standard control window – CAN and LIN transceiver sections
In the figure above the section of the GUI related to the setting of CAN and LIN transceivers is shown.
•Go TRX Ready button allows to set the CAN transceiver in TRX READY mode;
•RX Enable button allows to enable the CAN receiver;
•TX Enable button allows to enable the CAN transmitter;
TOUT Int. Enable flag allows to enable interrupt signal in case of CAN timeout (see CR1, bit 11)
Loopback Enable flag enables the loopback modality of L99DZ200G CAN transceiver (see CR2, bit 5).
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4.4 Watchdog timing section
Figure 9. Standard control window – Watchdog timing sections
In the figure above the section of the GUI related to the setting of WatchDog timing is reported.
One of the following values can be here set, as defined by the WD_TIME_0/1 bits (CR2, bit 0 and bit 1):
• 10 ms
• 50 ms
• 100 ms
• 200 ms
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4.5 Voltage regulator control section
Figure 10. Standard control window – voltage regulator 2 control section
In the figure above the section of the GUI related to the control of the voltage regulator 2 is reported.
The Off button allows to switch OFF or switch ON the V2; in case the V2 is ON, one of the following cases can be
used by setting the related button (see the datasheet Section 11 Reference documents):
•Always ON
•ON in Active mode
•ON in Active & V1 Standby
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Voltage regulator control section
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