Silicon Laboratories C8051F31 Series User manual

C8051F31x

C8051F31XDEVELOPMENT KIT USER’SGUIDE

1. Kit Contents

The C8051F31x Development Kit contains the following items:

• C8051F310 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 Silicon Laboratories IDE 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.

• 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 1. Hardware Setup Using a USB Debug Adapter

USB

Cable

USB Debug Adapter

AC/DC

Adapter

Target Board

SILICON LABORATORIES

PWR

P1.6

P3.7RESET

Port 4Port 3Port 1

Port 2 Port 0

MCU

Silicon Laboratories

USB DEBUG ADAPTER

Run

StopPower

C8051F31x

2 Rev. 0.7

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 C8051F310 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 C8051F31x family by checking the C8051F31x 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.

C8051F31x

Rev. 0.7 3

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 Simplicity IDE tile from the Simplicity Studio home screen.

2. Click the Create new project link from the welcome screen or go to FileNewSilicon Labs MCU

Project.

3. In the Kit drop-down, select C8051F310 Development Kit, in the Part drop-down, select C8051F310, and

in the SDK drop-down, select the desired SDK. Click Next.

4. Select Example and click Next.

5. Under C8051F310 Development Kit in the Blinky folder, select F31x Blinky and click Finish.

6. Click on the project in the Project Explorer and click Build, the hammer icon in the top bar. Alternatively,

go to ProjectBuild Project.

7. Click Debug to download the project to the hardware and start a debug session.

8. Press the Resume button to start the code running. The LED should blink.

9. Press the Suspend button to stop the code.

10. Press the Reset the device button to reset the target MCU.

11. 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.

C8051F31x

4 Rev. 0.7

3.3. Legacy 8-bit IDE

Note: Using the Simplicity Studio tools with the C8051F310 Development Kit is recommended. See section 3. "Software

Setup‚" on page 2 for more information.

Download the 8-bit software from the website (www.silabs.com/8bit-software) or use the provided installer on the

CD-ROM to install the software tools for the C8051F31x devices. After installation, examples can be found in

...\Examples\C8051F31x in the installation directory. At a minimum, the C8051F310 DK requires:

Silicon Labs IDE—Software enabling initial evaluation, development, and debugging.

Configuration Wizard 2—Initialization code generation software for the C8051F31x devices.

Keil C51 Tools—Keil 8051 Compiler/Assembler/Linker toolchain.

Other software available includes:

Keil µVision Driver—Driver for the Keil µVision IDE that enables development and debugging on

C8051Fxxx MCUs.

Flash Programming Utilities and MCU Production Programmer—Programming utilities for the

production line. More information on the available programming options can be found on the website:

http://www.silabs.com/products/mcu/Pages/ProgrammingOptions.aspx.

ToolStick Development Tools—Software and examples for the ToolStick development platform. More

information on this platform can be found at www.silabs.com/toolstick.

The development kit includes the latest version of the C51 Keil 8051 toolset. This toolset is initially limited to a code

size of 2 kB and programs start at code address 0x0800. After registration, the code size limit is removed entirely

and programs will start at code address 0x0000.

To register the Keil toolset:

1. Find the Product Serial Number printed on the CD-ROM. If you no longer have this serial number,

2. Open the Keil µVision4 IDE from the installation directory with administrative privileges.

3. Select FileLicense Management to open the License Management window.

Figure 3. Keil µVision4 IDE License Management Window

4. Click on the Get LIC via Internet... button to open the Obtaining a License IDE Code (LIC) window.

5. Press OK to open a browser window to the Keil website. If the window doesn’t open, navigate to

www.keil.com/license/install.htm.

6. Enter the Silicon Labs Product Serial Number printed on the CD-ROM, along with any additional required

C8051F31x

Rev. 0.7 5

information.

7. Once the form is complete, click the Submit button. An email will be sent to the provided email address

with the license activation code.

8. Copy the License ID Code (LIC) from the email.

9. Paste the LIC into the New License ID Code (LIC) text box at the bottom of the License Management

window in µVision4.

10. Press the Add LIC button. The window should now list the PK51 Prof. Developers Kit for Silabs as a

licensed product.

11. Click the Close button.

C8051F31x

6 Rev. 0.7

4. Target Board

The

C8051F31x

Development Kit includes a target board with a

C8051F310

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 4 for the locations of the various I/O connectors.

P1 Power connector (accepts input from 7 to 15 VDC unregulated power adapter)

J1 34-pin Expansion I/O connector

J3 Port I/O Configuration connector

J4 DEBUG connector for Debug Adapter interface

J5 DB-9 connector for UART0 RS232 interface

J6 Analog I/O terminal block

J7 Low pass filter connector

J8 USB Debug Adapter target board power connector

J9, J10 External crystal enable connectors

Figure 4. C8051F310 Target Board

PWR

Pin 1

Pin 2

DEBUG

Pin 1

Prototype Area

Pin 1

C8051

F31X

Pin 2

Pin 1

Prototyping Area I/O Connection Points

RESET P0.7

P3.3

J10

C8051F31x

Rev. 0.7 7

4.1. System Clock Sources

The

C8051F310

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 C8051F310 device at a fre-

quency not available with the internal oscillator, an external crystal may be used. Refer to the

C8051F31x

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 C8051F31x data sheet for more infor-

mation 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 C8051F310.

Pressing SW1 puts the device into its hardware-reset state. Switch SW2 is connected to the C8051F310’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 header 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.

Two 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 LED labeled with a port pin name is connected to the C8051F310’s GPIO pin

through headers. Remove the shorting block from the header to disconnect the LED from the port pin. 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 LED.

Table 1. Target Board I/O Descriptions

Description I/O Header

SW1 Reset none

SW2 P0.7 J3[3-4]

Green LED P3.3 J3[1-2]

Red LED PWR none

C8051F31x

8 Rev. 0.7

4.3. Expansion I/O Connector (J1)

The

-pin Expansion I/O connector J1 provides access to all signal pins of the C8051F

0 device. Pins for +3 V,

digital ground and the output of an on-board low-pass filter 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 4 on page 6

). Each connection point is labeled indicating the signal available at

the connection point. See Table 2 for a list of pin descriptions for J1.

4.4. Target Board DEBUG Interface (J4)

The

DEBUG

connector (J4) provides access to the

DEBUG

(C2) pins of the C8051F310. 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 2. J1 Pin Descriptions

Pin # Description Pin # Description Pin # Description

1 +3VD(+3.3VDC) 13 P1.2 25 P2.6

2 PWM Output 14 P1.3 26 P2.7

3 P0.0 15 P1.4 27 P3.0

4 P0.1 16 P1.5 28 P3.1

5 P0.2 17 P1.6 29 P3.2

6 P0.3 18 P1.7 30 P3.3

7 P0.4 19 P2.0 31 P3.4

8 P0.5 20 P2.1 32 /RST (Reset)

9 P0.6 21 P2.2 33 GND (Ground)

10 P0.7 22 P2.3 34 GND (Ground)

11 P1.0 23 P2.4

12 P1.1 24 P2.5

Table 3. DEBUG Connector Pin Descriptions

Pin # Description

1 +3VD(+3.3VDC)

2, 3, 9 GND (Ground)

4C2D

5/RST(Reset)

6P3.0

7C2CK

8 Not Connected

10 USB Power

C8051F31x

Rev. 0.7 9

4.5. Serial Interface (J5)

A RS232 transceiver circuit and DB-9 (J5) connector are provided on the target board to facilitate serial connec-

tions to UART0 of the C8051F310. 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[5–6]- Install shorting block to connect UART0 TX (P0.4) to transceiver.

J3[7–8]- Install shorting block to connect UART0 RX (P0.5) to transceiver.

J3[9–10]- Install shorting block to connect UART0 RTS (P3.1) to transceiver.

J3[11–12]- Install shorting block to connect UART0 CTS (P3.2) to transceiver.

4.6. Analog I/O (J6)

Several of the C8051F310 target device’s port pins are connected to the J6 terminal block. Refer to Table 4 for the

J6 terminal block connections. Install a shorting block on J7[2-3] to connect the AIN2.4 input to the P2.4 pin of the

target device.

4.7. 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.

4.8. Low-Pass Filter (J7)

The C8051F310 target board features a low-pass filter that may be connected to port pin P2.4. Install a shorting

block on J7[1–2] to connect the P2.4 pin of the target device to the low-pass filter input. The output of the low-pass

filter is routed to the PWM signal at J1[2]. The C8051F310 may be programmed to generate a PWM (Pulse-Width

Modulated) waveform which is then input to the low-pass filter to implement a user-controlled PWM digital-to-ana-

log converter. Refer to Applications Note “AN107: Implementing 16-Bit PWM Using the PCA” in the “documenta-

tion” directory on the CD-ROM for a discussion on generating a programmable dc voltage level with a PWM

waveform and low-pass filter.

Table 4. J6 Terminal Block Pin Descriptions

Pin # Description

1 P2.5 / AIN2.5

2AIN2.4

3 GND (Ground)

4 P0.0 / Vref (Voltage Reference)

C8051F31x

10 Rev. 0.7

5. Schematic

Figure 5. C8051F310 Target Board Schematic

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