Silicon Laboratories C8051F93 Series User manual

Rev 0.7 5/14 Copyright © 2014 by Silicon Laboratories C8051F93x/92x
C8051F93x/92x
C8051F930 DEVELOPMENT KIT USER’SGUIDE
1. Relevant Devices
The C8051F930 Development Kit is intended as a development platform for the microcontrollers in the
C8051F93x-C8051F92x MCU family.
Notes:
1. The target board included in this kit is provided with a pre-soldered C8051F930 MCU (LQFP32 package).
2. Code developed on the C8051F930 can be easily ported to the other members of this MCU family.
3. Refer to the C8051F93x-C8051F92x data sheet for the differences between the members of this MCU
family.
2. Kit Contents
The C8051F930 Development Kit contains the following items:
C8051F930 Target Board
C8051Fxxx Development Kit Quick-Start Guide
AC to DC Power Adapter
USB Debug Adapter (USB to Debug Interface)
2 USB Cables
2 AAA Batteries
CD-ROM
Figure 1. C8051F930 Target Board

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3. Hardware Setup Using a USB Debug Adapter
The target board is connected to a PC running the Silicon Laboratories IDE via the USB Debug Adapter as shown
in Figure 2.
1. Connect the USB Debug Adapter to the DEBUG connector on the target board with the 10-pin ribbon
cable.
2. Connect one end of the USB cable to the USB connector on the USB Debug Adapter.
3. Verify that a shorting block is installed on J17 and that SW5 is in the ON position.
4. Connect the other end of the USB cable to a USB Port on the PC.
5. Connect the ac/dc power adapter to power jack P1 on the target board (Optional).
Notes:
Use the Reset button in the IDE to reset the target when connected using a USB Debug Adapter.
Remove power from the target board and the USB Debug Adapter before connecting or disconnecting the
ribbon cable from the target board. Connecting or disconnecting the cable when the devices have power
can damage the device and/or the USB Debug Adapter.
Figure 2. Hardware Setup Using a USB Debug Adapter
PC
USB
Cable
AC/DC
Adapter
Target Board
P0.2 P0.3
J3
J4
J2
`
P3
CP
2103
U3
P2
DEBUG
J9
USB POWER
RESET
P1.6
P1.5
POWER OFF BEFORE
SW4
SWITCHING MODE
2 CELL 1 CELL
J17
IMEASURE
H2
SILICON LABS
www.silabs.com
H1
J6 VDD/DC+
J5
J7 J13
F930
U1
J14
J11
J10
VBAT
WALL_PWR
AAA_BAT
COIN_CELL
TOUCH SENSE SWITCH
P2.0 TOUCH SENSE SWITCH P2.1
J15
J16
R15
J12J8
+3VD
+1VD
VBAT
J1
SW5
ON
OFF
Silicon Laboratories
USB DEBUG ADAPTER
Run
Stop Power
USB Debug
Adapter

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4. Software Setup
Simplicity Studio greatly reduces development time and complexity with Silicon Labs EFM32 and 8051 MCU
products by providing a high-powered IDE, tools for hardware configuration, and links to helpful resources, all in
one place.
Once Simplicity Studio is installed, the application itself can be used to install additional software and
documentation components to aid in the development and evaluation process.
Figure 3. Simplicity Studio
The following Simplicity Studio components are required for the C8051F930 Development Kit:
8051 Products Part Support
Simplicity Developer Platform
Download and install Simplicity Studio from www.silabs.com/8bit-software or www.silabs.com/simplicity-studio.
Once installed, run Simplicity Studio by selecting StartSilicon LabsSimplicity StudioSimplicity Studio
from the start menu or clicking the Simplicity Studio shortcut on the desktop. Follow the instructions to install the
software and click Simplicity IDE to launch the IDE.
The first time the project creation wizard runs, the Setup Environment wizard will guide the user through the
process of configuring the build tools and SDK selection.
In the Part Selection step of the wizard, select from the list of installed parts only the parts to use during
development. Choosing parts and families in this step affects the displayed or filtered parts in the later device
selection menus. Choose the C8051F93x family by checking the C8051F93x/92x check box. Modify the part
selection at any time by accessing the Part Management dialog from the WindowPreferencesSimplicity
StudioPart Management menu item.
Simplicity Studio can detect if certain toolchains are not activated. If the Licensing Helper is displayed after
completing the Setup Environment wizard, follow the instructions to activate the toolchain.

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4.1. Running Blinky
Each project has its own source files, target configuration, SDK configuration, and build configurations such as the
Debug and Release build configurations. The IDE can be used to manage multiple projects in a collection called a
workspace. Workspace settings are applied globally to all projects within the workspace. This can include settings
such as key bindings, window preferences, and code style and formatting options. Project actions, such as build
and debug are context sensitive. For example, the user must select a project in the Project Explorer view in order
to build that project.
To create a project based on the Blinky example:
1. Click the Software Examples tile from the Simplicity Studio home screen.
2. In the Kit drop-down, select C8051F930 Development Kit, in the Part drop-down, select C8051F930, and
in the SDK drop-down, select the desired SDK. Click Next.
3. Select Example and click Next.
4. Under C8051F930 Development Kit in the Blinky folder, select F93x-92x Blinky and click Finish.
5. Click on the project in the Project Explorer and click Build, the hammer icon in the top bar. Alternatively,
go to ProjectBuild Project.
6. Click Debug to download the project to the hardware and start a debug session.
7. Press the Resume button to start the code running. The LED should blink.
8. Press the Suspend button to stop the code.
9. Press the Reset the device button to reset the target MCU.
10. Press the Disconnect button to return to the development perspective.
4.2. Simplicity Studio Help
Simplicity Studio includes detailed help information and device documentation within the tool. The help contains
descriptions for each dialog window. To view the documentation for a dialog, click the question mark icon in the
window:
This will open a pane specific to the dialog with additional details.
The documentation within the tool can also be viewed by going to HelpHelp Contents or HelpSearch.

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4.3. Simplicity Configurator
The Simplicity Configurator is a configuration and code generation tool. This utility helps accelerate development
by automatically generating initialization source code to configure and enable the on-chip resources needed by
most design projects. In just a few steps, the wizard creates complete startup code for a specific Silicon Labs MCU.
To create a new Simplicity Configurator project:
1. Click the Create new project link from the welcome screen or go to FileNewSilicon Labs MCU
Project.
2. In the Kit drop-down, select C8051F930 Development Kit or None, in the Part drop-down, select
C8051F930, and in the SDK drop-down, select the desired SDK. Click Next.
3. Select Simplicity Configurator Program and click Next.
4. Fill in the Project name and select the desired device. The C8051F930-G-GQ-LQFP device is on the
C8051F930 Target Board. Click Finish.
The Simplicity Configurator project displays properties for each peripheral. To configure a peripheral, click on the
DefaultMode Peripherals tab at the bottom and click on a peripheral. Checking the box for a peripheral will add it
to code generation. Once a peripheral is selected, configure the registers using the Properties view. Select a new
value for a property with either an input box or a drop-down menu and press Enter to set it.
Figure 4. Simplicity Configurator – Configuring Peripheral Properties

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To configure pins, click on the DefaultMode Port I/O tab at the bottom of main window. Clicking on a pin brings up
a property window for the pin. Clicking anywhere else in the main window opens a property window for the
crossbar. Select multiple pins with Ctrl + left click or mouse dragging over the desired set of pins. The package
diagram displays the configured peripherals on the pins, including non-crossbar signals (i.e. ADC inputs).
Code generation updates every time the configuration project saves. After configuring the device, add any non-
initialization code, build, and debug the same as with any other project.
More information on Simplicity Configurator can be found in AN0823: Simplicity Configurator User’s Guide and
AN0821: Simplicity Studio C8051F85x Walkthrough. Application notes can be found on
www.silabs.com/8bit-appnotes.
Figure 5. Simplicity Configurator – Configuring Port I/O

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4.4. CP210x USB to UART VCP Driver Installation
The MCU Card includes a Silicon Labs CP210x USB-to-UART Bridge Controller. Device drivers for the CP210x
need to be installed before the PC software can communicate with the MCU through the UART interface. Use the
drivers included CD-ROM or download the latest drivers from the website (www.silabs.com/interface-software).
1. If using the CD-ROM, the CP210x Drivers option will launch the appropriate driver installer. If downloading
the driver package from the website, unzip the files to a location and run the appropriate installer for the
system (x86 or x64).
2. Accept the license agreement and follow the steps to install the driver on the system. The installer will let
you know when your system is up to date. The driver files included in this installation have been certified by
Microsoft.
3. To complete the installation process, connect the included USB cable between the host computer and the
COM PORT USB connector (J5) on the MCU Card. Windows will automatically finish the driver installation.
Information windows will pop up from the taskbar to show the installation progress.
4. If needed, the driver files can be uninstalled by selecting the Windows Driver Package—Silicon
Laboratories... option in the Programs and Features window.

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4.5. Silicon Labs Battery Life Estimator
The Battery Life Estimator is a system design tool for battery operated devices. It allows the user to select the type
of battery they are using in the system and enter the supply current profile of their application. Using this
information, it performs a simulation and provides an estimated system operating time. The Battery Life Estimator
is shown in Figure 6.
Figure 6. Battery Life Estimator Utility
From Figure 6, the two inputs to the Battery Life Estimator are battery type and discharge profile. The utility
includes battery profiles for common battery types such as AAA, AA, A76 Button Cell, and CR2032 coin cell. The
discharge profile is application-specific and describes the supply current requirements of the system under various
supply voltages and battery configurations. The discharge profile is independent of the selected power source.
Several read-only discharge profiles for common applications are included in the pulldown menu. The user may
also create a new profile for their own applications.
To create a new profile:
1. Select the profile that most closely matches the target application or choose the "Custom Profile".
2. Click Manage.
3. Click Duplicate.
4. Click Edit.
Profiles may be edited with the easy-to-use GUI (shown in Figure 7).

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Figure 7. Battery Life Estimator Discharge Profile Editor
The Discharge Profile Editor allows the user to modify the profile name and description. The four text entry boxes
on the left hand side of the form allow the user to specify the amount of time the system spends in each power
mode. On the right hand side, the user may specify the supply current of the system in each power mode.
Since supply current is typically dependent on supply voltage, the discharge profile editor provides two columns for
supply current. The V2 and V1 voltages at the top of the two columns specify the voltages at which the current
measurements were taken. The Battery Life Estimator creates a linear approximation based on the input data and
is able to feed the simulation engine with an approximate supply current demand for every input voltage.
The minimum system operating voltage input field allows the system operating time to stop increasing when the
simulated battery voltage drops below a certain threshold. This is primarily to allow operating time estimates for
systems that cannot operate down to 1.8 V, which is the voltage of two fully drained single-cell batteries placed in
series.

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The wakeup frequency box calculates the period of a single iteration through the four power modes and displays
the system wake up frequency. This is typically the "sample rate" in low power analog sensors.
Once the battery type and discharge profile is specified, the user can click the "Simulate" button to start a new
simulation. The simulation engine calculates the estimated battery life when using one single-cell battery, two
single-cell batteries in series, and two single-cell batteries in parallel. Figure 8 shows the simulation output window.
Figure 8. Battery Life Estimator Utility Simulation Results Form
The primary outputs of the Battery Life Estimator are an estimated system operating time and a simulated graph of
battery voltage vs. time. Additional outputs include estimated battery capacity, average current, self-discharge
current, and the ability to export graph data to a comma delimited text file for plotting in an external graphing
application.