Silicon Laboratories C8051F12X Manual de usuario

C8051F12x-DK

C8051F12XDEVELOPMENT KIT USER’SGUIDE

1. Kit Contents

The C8051F12x Development Kit contains the following items:

• C8051F120 Target Board

• C8051Fxxx Development Kit Quick-Start Guide

• C8051F12x Development Kit User’s Guide (this document)

• Silicon Laboratories IDE and Product Information CD-ROM. CD content includes:

• Silicon Laboratories Integrated Development Environment (IDE)

• Keil 8051 Development Tools (macro assembler, linker, evaluation ‘C’ compiler)

• Source code examples and register definition files

• Documentation

• AC to DC Power Adapter

• Debug Adapter. Items include:

• EC2 Serial Adapter (RS232 to Debug Interface)

• RS232 Serial Cable

• 7” Ribbon Cable

• USB Debug Adapter (USB to Debug Interface)

• USB Cable

2. Hardware Setup using an EC2 Serial Adapter

Connect the target board to a PC running the Silicon Laboratories IDE via the Serial Adapter as shown in Figure 1.

1. Connect one end of the RS232 serial cable to a serial (COM) port on the PC.

2. Connect the other end of the RS232 serial cable to the DB-9 connector on the Serial Adapter.

3. Connect the Serial Adapter to the JTAG connector on the target board using the 10-pin ribbon cable.

4. Connect the AC/DC power adapter to power jack P1 on the target board.

Notes:

•UsetheReset button in the IDE to reset the target when connected using an EC2 Serial Adapter.

• Remove power from the target board and the EC2 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 EC2.

Figure 1. Hardware Setup using an EC2 Serial Adapter

Serial Port

Serial

Adapter

Ribbon

Cable Target

Board

AC/DC

Adapter

Serial

Cable

C8051F12x-DK

2 Rev. 0.6

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 JTAG 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 2. Hardware Setup using a USB Debug Adapter

4. Software Setup

The included CD-ROM contains the Silicon Laboratories Integrated Development Environment (IDE), Keil software

8051 tools and additional documentation. Insert the CD-ROM into your PC’s CD-ROM drive. An installer will auto-

matically launch, allowing you to install the IDE software or read documentation by clicking buttons on the Installa-

tion Panel. If the installer does not automatically start when you insert the CD-ROM, run autorun.exe found in the

root directory of the CD-ROM. Refer to the readme.txt file on the CD-ROM for the latest information regarding

known IDE problems and restrictions.

5. Silicon Laboratories Integrated Development Environment

The Silicon Laboratories IDE integrates a source-code editor, source-level debugger and in-system Flash program-

mer. The use of third-party compilers and assemblers is also supported. This development kit includes the Keil

Software A51 macro assembler, BL51 linker and evaluation version C51 ‘C’ compiler. These tools can be used

from within the Silicon Laboratories IDE.

5.1. System Requirements

The Silicon Laboratories IDE requirements:

• Pentium-class host PC running Microsoft Windows 98SE or later.

• One available COM or USB port.

• 64 MB RAM and 40 MB free HD space recommended.

USB Port

USB

Debug

Adapter

Ribbon Cable

Target Board

AC/DC

Adapter

USB

Cable

C8051F12x-DK

Rev. 0.6 3

5.2. Assembler and Linker

A full-version Keil A51 macro assembler and BL51 banking linker are included with the development kit and are

installed during IDE installation. The complete assembler and linker reference manual can be found under the Help

menu in the IDE or in the “SiLabs\MCU\hlp” directory (A51.pdf).

5.3. Evaluation C51 ‘C’ Compiler

An evaluation version of the Keil C51 ‘C’ compiler is included with the development kit and is installed during IDE

installation. The evaluation version of the C51 compiler is the same as the full professional version except code

size is limited to 4 kB and the floating point library is not included. The C51 compiler reference manual can be

found under the Help menu in the IDE or in the “SiLabs\MCU\hlp” directory (C51.pdf).

5.4. Using the Keil Software 8051 Tools with the Silicon Laboratories IDE

To perform source-level debugging with the IDE, you must configure the Keil 8051 tools to generate an absolute

object file in the OMF-51 format with object extensions and debug records enabled. You may build the OMF-51

absolute object file by calling the Keil 8051 tools at the command line (e.g. batch file or make file) or by using the

project manager built into the IDE. The default configuration when using the Silicon Laboratories IDE project

manager enables object extension and debug record generation.

Refer to Applications Note

AN104 -

Integrating

Keil 8051 Tools Into the Silicon Laboratories IDE

in the “SiLabs\MCU\Documentation\Appnotes” directory on the

CD-ROM for additional information on using the Keil 8051 tools with the Silicon Laboratories IDE.

To build an absolute object file using the Silicon Laboratories IDE project manager, you must first create a project. A

project consists of a set of files, IDE configuration, debug views, and a target build configuration (list of files and tool

configurations used as input to the assembler, compiler, and linker when building an output object file).

The following sections illustrate the steps necessary to manually create a project with one or more source files, build

a program and download the program to the target in preparation for debugging. (The IDE will automatically create a

single-file project using the currently open and active source file if you select

Build/Make Project

before a project is

defined.)

5.4.1. Creating a New Project

1. Select Project->New Project to open a new project and reset all configuration settings to default.

2. Select File->New File to open an editor window. Create your source file(s) and save the file(s) with a rec-

ognized extension, such as .c, .h, or .asm, to enable color syntax highlighting.

3. Right-click on “New Project” in the Project Window. Select Add files to project. Select files in the file

browser and click Open. Continue adding files until all project files have been added.

4. For each of the files in the

Project

Window

that you want assembled, compiled and linked into the target

build, right-click on the file name and select

Add file to build

. Each file will be assembled or compiled as

appropriate (based on file extension) and linked into the build of the absolute object file.

Note:

If a project contains a large number of files, the “Group” feature of the IDE can be used to organize.

Right-click on “New Project” in the

Project Window

. Select

Add Groups to project

. Add pre-defined

groups or add customized groups. Right-click on the group name and choose

Add file to group

. Select files

to be added. Continue adding files until all project files have been added.

C8051F12x-DK

4 Rev. 0.6

5.4.2. Building and Downloading the Program for Debugging

1. Once all source files have been added to the target build, build the project by clicking on the Build/Make

Project button in the toolbar or selecting Project->Build/Make Project from the menu.

Note: After the project has been built the first time, the Build/Make Project command will only build the

files that have been changed since the previous build. To rebuild all files and project dependencies, click

on the Rebuild All button in the toolbar or select Project->Rebuild All from the menu.

Before connecting to the target device, several connection options may need to be set.

Open the

Connection Options

window by selecting

Options->Connection Options...

in the IDE menu. First, select

the adapter that was included with the kit in the “Serial Adapter” section. Next, the correct “Debug Interface”

must be selected.

C8051F12x

family devices use the JTAG debug interface. Once all the selections are

made, click the OK button to close the window.

3. Click the

Connect

button in the toolbar or select

Debug->Connect

from the menu to connect to the device.

4. Download the project to the target by clicking the Download Code button in the toolbar.

Note: To enable automatic downloading if the program build is successful select Enable automatic con-

nect/download after build in the Project->Target Build Configuration dialog. If errors occur during the

build process, the IDE will not attempt the download.

5. Save the project when finished with the debug session to preserve the current target build configuration,

editor settings and the location of all open debug views. To save the project, select Project->Save Project

As... from the menu. Create a new name for the project and click on Save.

6. Example Source Code

Example source code and register definition files are provided in the “SiLabs\MCU\Examples\

C8051F12x

” directory

during IDE installation. These files may be used as a template for code development. Example applications include

a blinking LED example which configures the green LED on the target board to blink at a fixed rate.

6.1. Register Definition Files

status bits. They are installed into the “SiLabs\MCU\Examples\C8051F12x” directory during IDE installation. The

also installed in the default search path used by the Keil Software 8051 tools. Therefore, when using the Keil 8051

tools included with the development kit (A51, C51), it is not necessary to copy a register definition file to each

project’s file directory.

6.2. Code Banking Files

In order to utilize code banking in a project there are two files that will need to be changed. You can either custom

edit L51_bank.a51 and startup.a51 or use the copies installed into the “IDEfiles\C51\Lib” directory during IDE

installation. Both of these files MUST be added to your project and linked with your project in order for code bank-

ing to function properly. For more information on code banking, please see Application Note AN130 - Code Bank-

ing Using the Keil 8051 Tools.

6.3. Blinking LED Example

The example source files blink.asm and blinky.c show examples of several basic C8051F12x functions. These

include; disabling the watchdog timer (WDT), configuring the Port I/O crossbar, configuring a timer for an interrupt

routine, initializing the system clock, and configuring a GPIO port. When compiled/assembled and linked this pro-

gram flashes the green LED on the C8051F120 target board about five times a second using the interrupt handler

with a C8051F120 timer.

C8051F12x-DK

Rev. 0.6 5

7. Target Board

The

C8051F12x

Development Kit includes a target board with a

C8051F120

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

J1 Connects SW2 to P3.7 pin

J3 Connects LED D3 to P1.6 pin

J4 JTAG connector for Debug Adapter interface

J5 DB-9 connector for UART0 RS232 interface

J6 Connector for UART0 TX (P0.0)

J8 Connector for UART0 RTS (P4.0)

J9 Connector for UART0 RX (P0.1)

J10 Connector for UART0 CTS (P4.1)

J11 Analog loopback connector

J12-J19 Port 0 - 7 connectors

J20 Analog I/O terminal block

J22 VREF connector

J23 VDD Monitor Disable

J24 96-pin Expansion I/O connector

C8051

F12X

JTAG RESET

P3.7

J24

Pin 1

J11

Pin 2

J23

PWR

P1.6

J20

Pin 1

Pin 2 J22

Pin 2

Pin 1

Port 0 Port 2

Port 4 Port 7 Port 1

Port 3Port 6Port 5

J9J6

J8J10

Pin 1

Figure 3. C8051F120 Target Board

C8051F12x-DK

6 Rev. 0.6

7.1. System Clock Sources

The

C8051F120

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

3.0625MHz (+/-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, an external 22.1184 MHz crystal is installed on the

target board for additional applications. Refer to the

C8051F12x

data sheet for more information on configuring the

system clock source.

7.2. Switches and LEDs

Two switches are provided on the target board. Switch SW1 is connected to the RESET pin of the C8051F120.

Pressing SW1 puts the device into its hardware-reset state. Switch SW2 is connected to the C8051F120’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 J24 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 C8051F120’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 J24 I/O connector. See Table 1 for the port pins and headers corresponding to

each LED.

7.3. Target Board JTAG Interface (J4)

The

JTAG

connector (J4) provides access to the

JTAG

pins of the C8051F120. 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 2

shows the

JTAG

pin definitions.

Description I/O Header

SW1 Reset none

SW2 P3.7 J1

Green LED P1.6 J3

Red LED PWR none

Table 1. Target Board I/O Descriptions

Pin # Description

1 +3VD (+3.3VDC)

2, 3, 9 GND (Ground)

4TCK

5TMS

6TDO

7TDI

8, 10 Not Connected

Table 2. JTAG Connector Pin Descriptions

C8051F12x-DK

Rev. 0.6 7

7.4. 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 C8051F120. The TX, RX, RTS and CTS signals of UART0 may be connected to the DB-9

connector and transceiver by installing shorting blocks on headers J6, J8, J9 and J10.

J6 - Install shorting block to connect UART0 TX (P0.0) to the transceiver.

J9 - Install shorting block to connect UART0 RX (P0.1) to the transceiver.

J8 - Install shorting block to connect UART0 RTS (P4.0) to the transceiver.

J10 - Install shorting block to connect UART0 CTS (P4.1) to the transceiver.

7.5. Analog I/O (J11, J20)

Several C8051F120 analog signals are routed to the J20 terminal block and the J11 header. The J11 connector

provides the ability to connect DAC0 and DAC1 outputs to several different analog inputs by installing a shorting

block between a DAC output and an analog input on adjacent pins of J11. Refer to Table 3 for J20 terminal block

connections and Table 4 for J11 pin definitions.

Pin # Description

1CP0+

2CP0-

3DAC0

4DAC1

5AIN0.0

6AIN0.1

7VREF0

8 ADND (Analog Ground)

Table 3. J20 Terminal Block Pin Descriptions

Pin # Description

1CP0+

2CP0-

3DAC0

4DAC1

5CP1+

6CP1-

7AIN0.0

8AIN0.1

9DAC0

10 DAC1

11 AIN0.6

12 AIN0.7

Table 4. J11 Connector Pin Descriptions

C8051F12x-DK

8 Rev. 0.6

7.6. PORT I/O Connectors (J12 - J19)

In addition to all port I/O signals being routed to the 96-pin expansion connector, each of the eight parallel ports of

the C8051F120 has its own 10-pin header connector. Each connector provides a pin for the corresponding port

pins 0-7, +3.3 VDC and digital ground. Table 5 defines the pins for the port connectors. The same pin-out order is

used for all of the port connectors.

7.7. VDD Monitor Disable (J23)

The VDD Monitor of the C8051F120 may be disabled by moving the shorting block on J23 from pins 1-2 to pins 2-

3, as shown in Figure 4.

Pin # Description

1Pn.0

2Pn.1

3Pn.2

4Pn.3

5Pn.4

6Pn.5

7Pn.6

8Pn.7

9 +3VD(+3.3VDC)

10 GND (Ground)

Table 5. J12- J19 Port Connector Pin Descriptions

MONEN

Figure 4. VDD Monitor Hardware Setup

C8051F12x-DK

Rev. 0.6 9

7.8. Expansion I/O Connector (J24)

The 96-pin expansion I/O connector J24 is used to connect daughter boards to the main target board. J24 provides

access to many C8051F120 signal pins. Pins for +3 V, digital ground, analog ground and the unregulated power

supply (VUNREG) are also available. The VUNREG pin is connected directly to the unregulated +V pin of the P1

power connector. See Table 6 for a complete list of pins available at J24.

The J24 socket connector is manufactured by Hirose Electronic Co. Ltd, part number PCN13-96S-2.54DS, Digi-

Key part number H7096-ND. The corresponding plug connector is also manufactured by Hirose Electronic Co. Ltd,

part number PCN10-96P-2.54DS, Digi-Key part number H5096-ND.

Pin # Description Pin # Description Pin # Description

A-1 +3 VD2 (+3.3 VDC) B-1 DGND (Digital Gnd) C-1 XTAL1

A-2 MONEN B-2 P1.7 C-2 P1.6

A-3 P1.5 B-3 P1.4 C-3 P1.3

A-4 P1.2 B-4 P1.1 C-4 P1.0

A-5 P2.7 B-5 P2.6 C-5 P2.5

A-6 P2.4 B-6 P2.3 C-6 P2.2

A-7 P2.1 B-7 P2.0 C-7 P3.7

A-8 P3.6 B-8 P3.5 C-8 P3.4

A-9 P3.3 B-9 P3.2 C-9 P3.1

A-10 P3.0 B-10 P0.7 C-10 P0.6

A-11 P0.5 B-11 P0.4 C-11 P0.3

A-12 P0.2 B-12 P0.1 C-12 P0.0

A-13 P7.7 B-13 P7.6 C-13 P7.5

A-14 P7.4 B-14 P7.3 C-14 P7.2

A-15 P7.1 B-15 P7.0 C-15 P6.7

A-16 P6.6 B-16 P6.5 C-16 P6.4

A-17 P6.3 B-17 P6.2 C-17 P6.1

A-18 P6.0 B-18 P5.7 C-18 P5.6

A-19 P5.5 B-19 P5.4 C-19 P5.3

A-20 P5.2 B-20 P5.1 C-20 P5.0

A-21 P4.7 B-21 P4.6 C-21 P4.5

A-22 P4.4 B-22 P4.3 C-22 P4.2

A-23 P4.1 B-23 P4.0 C-23 TMS

A-24 TCK B-24 TDI C-24 TDO

A-25 /RST B-25 DGND (Digital Gnd) C-25 VUNREG

A-26 AGND (Analog Gnd) B-26 DAC1 C-26 DAC0

A-27 CP1- B-27 CP1+ C-27 CP0-

A-28 CP0+ B-28 VREF C-28 VREFD

A-29 VREF0 B-29 VREF1 C-29 AIN0.7

A-30 AIN0.6 B-30 AIN0.5 C-30 AIN0.4

A-31 AIN0.3 B-31 AIN0.2 C-31 AIN0.1

A-32 AIN0.0 B-32 AGND (Analog Gnd) C-32 AV+ (+3.3 VDC Analog)

Table 6. J24 Pin Descriptions

C8051F12x-DK

10 Rev. 0.6

7.9. VREF Connector (J22)

The VREF connector (J22) can be used to connect the VREF (Voltage Reference) output of the C8051F120 to any

(or all) of its voltage reference inputs. Install shorting blocks on J22 in the following manner:

1-2 to connect VREF to VREFD

3-4 to connect VREF to VREF0

5-6 to connect VREF to VREF1

8. EC2 Serial Adapter

The Serial Adapter provides the interface between the PC’s RS232 serial port and the C8051F12x’s in-system

debug/programming circuitry. The Serial Adapter connects to the C8051F120 JTAG debug interface on the target

board using the 10-pin connector on the Serial Adapter labeled “DEBUG”, see Figure 5. (The Serial Adapter sup-

ports both Silicon Laboratories JTAG and C2 debug interfaces.). All Serial Adapters may be powered from the tar-

get board, but the EC1 and EC2 Serial Adapter units cannot provide power to the target board. Table 7 shows the

pin definitions for the Serial Adapter’s DEBUG connector.

Notes:

• When powering the Serial Adapter via the DEBUG connector, the input voltage to the DEBUG connector’s

power pin must be 3.0 to 3.6 VDC. Otherwise, the Serial Adapter must be powered directly by connecting

the AC/DC adapter to the Serial Adapter’s DC power jack.

• The Serial Adapter requires a target system clock of 32 KHz or greater.

Pin # Description

1 3.0 to 3.6 VDC Input

2,3,9 GND (Ground)

4TCK(C2D)

5TMS

6TDO

7TDI(C2CK)

8,10 Not Connected

Table 7. EC2 Serial Adapter DEBUG Connector Pin Descriptions

Pin 1

Serial

Adapter

Pin 2

DEBUG

Pwr Run/

Stop

RS232

Figure 5. EC2 Serial Adapter DEBUG Connector

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