C8051F35x Development Kit User s Guide

C8051F35x-DK
C8051F35 X -DK D EVELOPMENT K IT U SER ’ S G U I D E
1. Kit Contents
The C8051F35x-DK Development Kit contains the following items:
C8051F350
Target Board
C8051Fxxx Development Kit Quick-Start Guide
AC to DC Power Adapter
USB Debug Adapter (USB to Debug Interface)
USB Cable
CD-ROM
2. Hardware Setup using a USB Debug Adapter
The target board is connected to a PC running the Simplicity Studio via the USB Debug Adapter as shown in
Figure 1.
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. Connect the other end of the USB cable to a USB Port on the PC.
4. Connect the ac/dc power adapter to power jack P1 on the target board.
Notes:
Use
the Reset button in the IDE to reset the target when connected using a USB Debug Adapter.
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.
Remove
AC/DC
Adapter
PC
Target Board
USB Debug Adapter
PWR
SILICON LABORATORIES
RESET P3.7
Run
Stop
Silicon Laboratories
USB DEBUG ADAPTER
Power
USB
Cable
MCU
P1.6
Port 2
Port 0
Port 1
Port 3
Port 4
Figure 1. Hardware Setup using a USB Debug Adapter
Rev. 0.4
Copyright © 2014 by Silicon Laboratories
C8051F35x-DK
C8051F35x-DK
3. 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 2. Simplicity Studio
The following Simplicity Studio components are required for the C8051F350 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 C8051F35x family by checking the C8051F35x 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.
2
Rev. 0.4
C8051F35x-DK
3.1. 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 C8051F350 Development Kit, in the Part drop-down, select C8051F350, and
in the SDK drop-down, select the desired SDK. Click Next.
3. Under C8051F350 Development Kit, select F35x Blinky, click Next, and click Finish.
4. Click on the project in the Project Explorer and click Build, the hammer icon in the top bar. Alternatively,
go to ProjectBuild Project.
5. Click Debug to download the project to the hardware and start a debug session.
6. Press the Resume button to start the code running. The LED should blink.
7. Press the Suspend button to stop the code.
8. Press the Reset the device button to reset the target MCU.
9. Press the Disconnect button to return to the development perspective.
3.2. 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.
Rev. 0.4
3
C8051F35x-DK
4. Target Board
The C8051F35x Development Kit includes a target board with a C8051F350 device pre-installed for evaluation and
preliminary software development. Numerous input/output (I/O) connections are provided to facilitate prototyping
using the target board. Refer to Figure 3 for the locations of the various I/O connectors.
P1
J1
J3
J4
J5
J6
J7
J8
J9, J10
J11
J12
J13, J14
Power connector (accepts input from 7 to 15 VDC unregulated power adapter)
22-pin Expansion I/O connector
Port I/O Configuration Jumper Block
DEBUG connector for Debug Adapter interface
DB-9 connector for UART0 RS232 interface
Analog I/O terminal block
Connector for IDAC0 voltage circuit
USB Debug Adapter target board power connector
External crystal enable connectors
Connector for IDAC1 voltage circuit
Connector block for Thermistor circuitry
ADC external voltage reference connectors
P1.0
PWR
Reset
J5
Pin 1
Pin 2
Prototype Area
J1
J11 J7
P0.6
J3
Pin 1
J13
P0.7
Pin 2
J2
J9 J10
C8051
F35X
Pin 2
DEBUG
J14
J8
Pin 1
J4
P1
J12
Pin 1
J6
Pin 1
Prototyping Area & I/O Connection Points
Figure 3. C8051F350 Target Board
4
Rev. 0.4
Pin 1
C8051F35x-DK
4.1. System Clock Sources
The C8051F350 device installed on the target board features a calibrated programmable internal oscillator which is
enabled as the system clock source on reset. After reset, the internal oscillator operates at a frequency of
3.0625 MHz (±2%) by default but may be configured by software to operate at other frequencies. Therefore, in
many applications an external oscillator is not required. However, if you wish to operate the C8051F350 device at a
frequency not available with the internal oscillator, an external crystal may be used. Refer to the C8051F35x data
sheet for more information on configuring the system clock source.
The target board is designed to facilitate the installation of an external crystal. Remove shorting blocks at headers
J9 and J10 and install the crystal at the pads marked Y1. Install a 10 M resistor at R9 and install capacitors at
C14 and C15 using values appropriate for the crystal you select. Refer to the C8051F35x data sheet for more
information on the use of external oscillators.
4.2. Switches and LEDs
Two switches are provided on the target board. Switch SW1 is connected to the RESET pin of the C8051F350.
Pressing SW1 puts the device into its hardware-reset state. Switch SW2 is connected to the C8051F350’s general
purpose I/O (GPIO) pin through headers. Pressing SW2 generates a logic low signal on the port pin. Remove the
shorting block from the jumper to disconnect SW2 from the port pins. The port pin signal is also routed to a pin on
the J1 I/O connector. See Table 1 for the port pins and headers corresponding to each switch.
Three LEDs are also provided on the target board. The red LED labeled PWR is used to indicate a power
connection to the target board. The green LEDs labeled with port pin names are connected to the C8051F350’s
GPIO pins through headers. Remove the shorting blocks from the headers to disconnect the LEDs from the port
pins. The port pin signals are also routed to pins on the J1 I/O connector. See Table 1 for the port pins and headers
corresponding to each LED.
Table 1. Target Board I/O Descriptions
Description
I/O
Jumper
SW1
SW2
Green LED D2
Green LED D1
Red LED
Reset
P1.0
P0.6
P0.7
PWR
none
J3[5–6]
J3[1–2]
J3[3–4]
none
Rev. 0.4
5
C8051F35x-DK
4.3. Expansion I/O Connector (J1)
The 34-pin Expansion I/O connector J1 provides access to all signal pins of the C8051F350 device. Pins for VDD
and GND as well as pins for VDDA and AGND are also available. A small through-hole prototyping area is also
provided. All I/O signals routed to connector J1 are also routed to through-hole connection points between J1 and
the prototyping area (see Figure 3 on page 4). Each connection point is labeled indicating the signal available at
the connection point. See Table 2 for a list of pin descriptions for J1.
Table 2. J1 Pin Descriptions
Pin #
Description
Pin #
Description
Pin #
Description
1
2
3
4
5
6
7
8
9
10
11
VDD
GND
P0.0
P0.1
P0.2
P0.3
P0.4
P0.5
P0.6
P0.7
P1.0
P1.1
13
14
15
16
17
18
19
20
21
22
23
24
P1.2
P1.3
P1.4
P1.5
P1.6/IDAC0
P1.7/IDAC1
P2.0
AGND
AGND
AIN0
AIN1
AIN2
25
26
27
28
29
30
31
32
33
34
-
AIN3
AIN4
AIN5
AIN6
AIN7
VREF+
/RST
VREF–
VDDA
AGND
-
4.4. Target Board DEBUG Interface (J4)
The DEBUG connector (J4) provides access to the DEBUG (C2) pins of the C8051F350. It is used to connect the
Serial Adapter or the USB Debug Adapter to the target board for in-circuit debugging and Flash programming.
Table 3 shows the DEBUG pin definitions.
Table 3. DEBUG Connector Pin Descriptions
Pin #
Description
1
2, 3, 9
4
5
6
7
8
10
+3 VD (+3.3 VDC)
GND (Ground)
C2D
/RST (Reset)
P3.0
C2CK
Not Connected
USB Power
4.5. Serial Interface (J5)
A RS232 transceiver circuit and DB-9 (J5) connector are provided on the target board to facilitate serial
connections to UART0 of the C8051F350. The TX, RX, RTS and CTS signals of UART0 may be connected to the
DB-9 connector and transceiver by installing shorting blocks on header J3.
J3[7–8] - Install shorting block to connect UART0 TX (P0.4) to transceiver.
J3[9–10] - Install shorting block to connect UART0 RX (P0.5) to transceiver.
J3[11–12] - Install shorting block to connect UART0 RTS (P1.4) to transceiver.
J3[13–14] - Install shorting block to connect UART0 CTS (P1.5) to transceiver.
6
Rev. 0.4
C8051F35x-DK
4.6. Analog I/O (J6)
Many of the C8051F350 target device’s port pins are connected to the J6 terminal block. Connections for VDDA,
AGND, ADC external voltage references, IDAC outputs and ADC inputs are available. Refer to Table 4 for the J6
terminal block connections.
Table 4. J6 Terminal Block Pin Descriptions
Pin #
Description
Pin #
Description
1
2
3
4
5
6
7
IDAC0
IDAC1
VREF+
VREF–
AIN0
AIN1
AIN2
8
9
10
11
12
13
14
AIN3
AIN4
AIN5
AIN6
AIN7
AGND
VDDA
4.7. IDAC Connectors (J7, J11)
The C8051F350 target board also features two Current-to-Voltage 1 K load resistors that may be connected to
the 10-bit current-mode Digital-to-Analog Converters (IDACs) on port pins P1.6 and P1.7. Install a shorting block
on J7 to connect the IDAC0/P1.6 pin of the target device to a load resistor. Install a second shorting block on J11 to
connect the IDAC1/P1.7 pin of the target device to a load resistor. The IDAC signals are then routed to the J1 and
J6 connectors.
4.8. USB Debug Adapter Target Board Power Connector (J8)
The USB Debug Adapter includes a connection to provide power to the target board. This connection is routed
from J4[10] to J8[1]. Place a shorting block at header J8[2-3] to power the board directly from an ac/dc power
adapter. Place a shorting block at header J8[1-2] to power the board from the USB Debug Adapter. Please note
that the second option is not supported with either the EC1 or EC2 Serial Adapters.
4.9. Thermistor Connector Block (J12)
A thermistor circuit is included on the board which allows for a ratiometric measurement of the included thermistor.
To use the circuit, remove the shorting blocks on the IDAC headers (J7, J11) and the External Voltage Reference
headers (J13, J14). Next, connect all of the signals on the thermistor connector block (J12). Software on the chip
can be written to use IDAC0 as a reference current source for the circuit. The current creates a voltage across R27
which is used as an external Voltage Reference input, while the voltage across the thermistor (R26) can be
measured by connecting AIN0.0 to the AIN+ ADC input, and AIN0.1 to the AIN- ADC input.
4.10. External Voltage Reference (J13, J14)
A precision 2.5V voltage reference source is also included on the C8051F350 target board. To use this circuit as a
reference source for the ADC, place shorting block on headers J13 and J14. Note that software on the device
should be configured to use an external reference when using this configuration. When using the internal (on-chip)
reference source, headers J13 and J14 should be left open.
Rev. 0.4
7
Figure 4. C8051F350 Target Board Schematic - Page 1
C8051F35x-DK
5. Schematics
8
Rev. 0.4
Figure 5. C8051F350 Target Board Schematic - Page 2
C8051F35x-DK
Rev. 0.4
9
C8051F35x-DK
DOCUMENT CHANGE LIST
Revision 0.1 to Revision 0.2
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
Section 1, added USB Debug Adapter and USB
Cable.
Section 2, changed name from "Hardware Setup" to
"Hardware Setup using an EC2 Serial Adapter".
Section 2, added 2 Notes bullets.
Section 2, removed Note from bottom of page.
Added Section 3, "Hardware Setup using a USB
Debug Adapter".
Section 5.4.2, changed step 2 to include new
instructions.
Section 7, J4, changed "Serial Adapter" to "Debug
Adapter".
Target Board DEBUG Interface Section, added USB
Debug Adapter.
DEBUG Connector Pin Descriptions Table, changed
pin 4 to C2D.
Changed "jumper" to "header".
EC2 Serial Adapter section, added EC2 to the
section title, table title and figure title.
EC2 Serial Adapter section, changed "JTAG" to
"DEBUG".
Added "USB Debug Adapter" section.
Section 7, J8, changed "Serial Adapter" to "USB
Debug Adapter"
DEBUG Connector Pin Descriptions Table, changed
pin 10 to USB Power
USB Debug Adapter Target Board Power Connector
(J8) Section, changed "Serial" to "USB Debug"
Revision 0.2 to Revision 0.3

Removed EC2 Serial Adapter from Kit Contents.
 Removed Section 2. Hardware Setup using an EC2
Serial Adapter. See RS232 Serial Adapter (EC2)
User's Guide.
 Removed Section 8. EC2 Serial Adapter. See
RS232 Serial Adapter (EC2) User's Guide.
 Removed Section 9. USB Debug Adapter. See USB
Debug Adapter User's Guide.
Revision 0.3 to Revision 0.4

10
Updated "Software Setup‚" on page 2.
Rev. 0.4
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