SILABS CP2501-DK Cp250x development kit Datasheet

C P2 5 0 1 -DK
CP250 X D EVELOPMENT K I T U SER ’ S G UIDE
1. Kit Contents
The CP250x Development Kit contains the following items:

CP250x Motherboard
CP2501 Development Daughter Board
 CP250x Development Kit Quick-Start Guide
 Product information CD-ROM including the following:

Silicon
Laboratories Integrated Development Environment (IDE)
Development Tools
Raisonance Development Tools (evaluation version)
Keil 8051 Development tools (evaluation version)
CP250x Configuration Wizard and Bootloader
Source code examples
Documentation
SDCC


AC-to-DC universal power adapter
Two USB cables
2. Hardware Setup
See Figure 1 for a diagram of the hardware configuration.
1.
2.
3.
4.
Attach the daughter board to the motherboard at connectors P1 and P2.
Place shorting blocks on J7 and J3 [+3VD, VDD_PWR], as shown in Figure 1.
Connect the motherboard’s P5 USB connector to a PC using the USB Cable.
Connect the ac-to-dc power adapter to connector P3 on the motherboard.
Notes:
1. Use the Reset icon in the IDE to reset the target when connected during a debug session.
2. Remove power from the motherboard and remove the USB cable before removing a daughter board from the
motherboard. Connecting or disconnecting a daughter board when the power adapter or USB cable are connected can
damage the motherboard or the daughter board.
Rev. 0.1 5/10
Copyright © 2010 by Silicon Laboratories
CP2501-DK
CP2501-DK
AC Adapter
Place shorting blocks on
J3 and J7 as shown.
H1
PWR
P3
J7
GPIO7-0
J3
J13
VDD_DEBUG
VDD_PWR
+3VD
TB2
J1
SMBUS_SDA
VPP J15
SMBUS_SCL
CP2501-GM EDB
GND
P3
U1
SILICON LABS
www.silabs.com
P1
TB1
CP
2501
J2
J1
UART_RX
UART_TX
VBUS
VREGIN
VDD
GND
TB3
SPI_SCLK
P2
SPI_MISO
SPI_MOSI
U1
F326
RESET
D10
SILICON LABS
www.silabs.com
D11
CP250x-MB
D12
USB Cable
2
Rev. 0.1
GND
GPIO15-8
P5
Figure 1. Hardware Setup
SPI_NSS
H2
CP2501-DK
3. Software Installation
The included CD-ROM contains the Silicon Labs Integrated Development Environment (IDE), 8051 evaluation
toolset, optional software utilities, and additional documentation. Insert the CD-ROM into your PC’s CD-ROM drive.
An installer will automatically launch, allowing you to install the IDE software or read documentation by clicking
buttons on the Installation 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 ReleaseNotes.txt file on the CD-ROM for the
latest information regarding known problems and restrictions.
3.1. System Requirements
The following are the system requirements necessary to run the debug and programming tools:


Pentium-class host PC running Microsoft Windows XP or newer.
One available USB port.
3.2. Development Tools Installation
To install the IDE, utilities, and code examples, perform the following steps:
1. Click on the "Install Development Tools" button on the installation utility's startup screen.
2. In the Kit Selection box that appears, choose the CP250x development kit from the list of options.
3. In the next screen, choose “Components to be Installed”. The programs necessary to download and debug on
the MCU are the Silicon Labs IDE and the 8051 Evaluation Toolset. See Section 4. for an overview of all
applicable software included on the CD-ROM.
4. Installers selected in Step 3 will execute in sequence, prompting the user as they install programs,
documentation, and drivers.
4. Software Overview
The following software is necessary to build a project, download code to, and communicate with the target
microcontroller.

8051 Evaluation Toolset
 Silicon Labs Integrated Development Environment (IDE)
Other useful software that is provided on the development kit CD and the Silicon Labs Downloads
(www.silabs.com/mcudownloads) website includes the following:

CP250x Configuration Wizard
 CP250x USB Bootloader
4.1. 8051 Evaluation Toolset
The Silicon Labs IDE has native support for many third party 8051 toolsets. Included with this kit are several 8051
evaluation assembler, compiler, and linker toolsets. For further information on the tools, including limitations, see
the corresponding application note. Application notes can be found in the documentation section of the
Development Kit CD, or on the Silicon Labs website (http://www.silabs.com/products/mcu/Pages/
ApplicationNotes.aspx). See Table 1 for a list of supported toolsets and associated application notes.
Table 1. Supported Third Party 8051 Toolsets
Toolset
Application Note
Keil
AN104, “Integrating Keil 8051 Tools into the Silicon Labs IDE”
Raisonance
AN125, “Integrating Raisonance 8051 Tools into the Silicon Labs IDE”
SDCC
AN198, “Integrating SDCC 8051 Tools into the Silicon Labs IDE”
Rev. 0.1
3
CP2501-DK
4.2. Silicon Labs IDE
The Silicon Labs IDE integrates a source-code editor, source-level debugger and in-system programmer. The
following sections discuss how to open an example project in the IDE, build the source code, and download it to the
target device.
4.2.1. Running the CP250x_NoScreen example program
The CP250x_NoScreen example program drags a simulated finger starting from the top left corner of the screen
towards the middle of the screen and releases.
1. Open the Silicon Labs IDE from the Start menu.
2. Select ProjectOpen Project to open an existing project.
3. Browse to the C:\SiLabs\MCU\Examples\CP250x\NoScreen directory (default) and select the
CP250x_NoScreen.wsp project file and click Open.
4. Once the project is open, 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.
5. 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
“USB Debug Adapter” option. Next, the correct “Debug Interface” must be selected. CP2501 devices use
Silicon Labs “C2” 2-wire debug interface. Once all the selections are made, click the OK button to close the
window.
6. Click the Connect button in the toolbar or select DebugConnect from the menu to connect to the
device.
7. 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 connect/download after build in the ProjectTarget Build Configuration dialog. If errors occur during the
build process, the IDE will not attempt the download.
8. Click on the Go button (green circle) in the toolbar or by selecting DebugGo from the menu to start running the firmware.
9. Connect the USB connector on the daughter board to a Windows Vista or Windows 7 PC that supports HID
touchscreens.
10. The device will enumerate and then drag the simulated finger across the screen.
4.2.2. Creating a New Project
Use the following steps to create a new project. Once steps 1-5 in this section are complete, continue at Step 4 in
Section 4.2.1.
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 recognized 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.
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.
4
Rev. 0.1
CP2501-DK
4.3. CP250x Configuration Wizard
The CP250x Configuration Wizard generates the initial firmware project for CP250x devices based on the user’s
system requirements. Code is generated through the use of dialog boxes as shown in Figure 2.
Figure 2. CP250x Configuration Wizard
The CP250x Configuration Wizard 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 firmware that will enumerate over USB as a HID touch screen device. The program is
configurable to output projects for Raisonance, SDCC, and Keil.
For more information, refer to the “AN464: CP250x Programmer’s Guide and API specification.” Documentation
and software is available on the kit CD and from the downloads webpage: www.silabs.com/mcudownloads.
Rev. 0.1
5
CP2501-DK
5. Development Boards
The CP2501 Development Kit includes a motherboard that interfaces to a daughter board. The CP2501
Development Daughter Board contains a CP2501 device to be used for preliminary software development.
Numerous input/output (I/O) connections are provided on the motherboard to facilitate prototyping. Figure 3 shows
the CP250x Motherboard and indicates locations for various I/O connectors and shows the factory default shorting
block positions. Figure 4 shows the available CP250x daughter board.
CP250x Motherboard
P1, P2
Daughter board connection
P3
Power connector that accepts input from 7.5 V dc to 15 V dc unregulated power adapter
P5
USB Debug interface connector
H1
GPIO 7:0 header
H2
GPIO 15:8 header
J1
SMBus Pull-up Resistor Power Header
J2
UART Connection to Debug Adapter
J3
Power Supply Selection Header
J7
Power supply enable header that connects power source selected on J3 to the board's main
power supply net
J13
Additional connections to ground
TB1
UART Interface Header
TB2
SMBus Interface Header
TB3
SPI Interface Header
CP2501 Development Daughter Board
J1
CP2501 VREGIN Input Selection Header
P3
USB connector for touch-screen interface
6
Rev. 0.1
CP2501-DK
H1
PWR
P3
GPIO7-0
J3
J7
J13
VDD_DEBUG
VDD_PWR
+3VD
TB2
J1
SMBUS_SDA
VPP J15
SMBUS_SCL
GND
P1
TB1
UART_RX
J2
UART_TX
GND
TB3
SPI_SCLK
P2
SPI_MISO
SPI_MOSI
U1
F326
RESET
D10
SILICON LABS
www.silabs.com
D11
CP250x-MB
SPI_NSS
GND
GPIO15-8
D12
H2
P5
Figure 3. CP250x Motherboard with Default Shorting Block Positions
CP2501-GM EDB
P3
U1
SILICON LABS
www.silabs.com
CP
2501
J1
VBUS
VREGIN
VDD
Figure 4. CP2501 Development Daughter Board
Rev. 0.1
7
CP2501-DK
5.1. Switch and LEDs
The RESET switch is connected to the RST pin of the CP250x. Pressing RESET puts the device into its hardwarereset state.
Four LEDs are also provided on the motherboard. The red LED labeled “PWR” (D4), indicates a power connection
to the motherboard. The green LED labeled “RUN” (D10) turns on when the debug circuitry is in a running state;
the red LED labeled “STOP” (D11) turns on when the debug circuitry is in a halted state, and the orange LED
labeled “DEBUG PWR” (D12) indicates whether the debug adapter circuit is being powered through P5's USB
connector. Table 2 lists the port pins and headers corresponding to the switch and LEDs.
Table 2. Motherboard LED and Switch Descriptions
Description
Component Name
I/O
Header
RESET
SW3
Daughter Board’s RST/C2CK
None
Red LED labeled "PWR"
D4
Daughter Board’s VDD
J3, J7
Green LED labeled "RUN"
D10
Debug Adapter Signal
None
Red LED labeled "STOP"
D11
Debug Adapter Signal
None
Orange LED labeled "DEBUG PWR"
D12
Debug Adapter Signal
None
5.2. Power Supply Headers (P3, J3, and J7)
The main power supply of the motherboard, which is used to power the daughter board, can be provided by either
the USB debug device’s on-chip voltage regulator or P3 and its associated circuitry. To select a power supply, place
a shorting block on J3 across the appropriate pin pair, as shown in Figure 5. To connect the main power supply to
an attached daughter board, place a shorting block across J7.
Notes:
1. Only two of the pins on the J3 header should be connected at any one time
2. To use the USB debug device’s voltage regulator as the board's power supply, a USB cable must be
connected to P5, and the DEBUG PWR LED (D12) must be on.
VDD_PWR
J7
VDD_CP250x
VDD_PWR
J7
J3
VDD_DEBUG
VDD_PWR
+3VD
VDD_CP250x
+3.3V Regulator Power
(From P3)
J3
VDD_DEBUG
VDD_PWR
+3VD
Debug Circuit Power
(From USB at P5)
Figure 5. J3 and J7 Shorting Block Configuration for Power Options
8
Rev. 0.1
CP2501-DK
5.3. USB Debug Device (DEBUG/P5)
A universal serial bus (USB) connector (P5) provides the onboard debug and programming interface. The debug/
programming MCU and associated circuitry are powered through the USB connector, which can also supply the
rest of the motherboard by routing the USB debug device’s power through J3. The USB debug device also
provides a data communications interface that can be used when the debug adapter is not debugging or
programming a CP250x device.
5.4. UART Communications Interfaces (TB1, J2)
The CP250x Motherboard provides UART to USB communications interfaces through both the TB1 interface and
the communications interface of the USB Debug Adapter. Any external touch screen module using the UART
interface can connect to the CP250x through either header.
The USB debug device’s communications interface connects to a PC through P5. Access to the USB debug
device’s communications interface is provided by the Windows program called “ToolStick Terminal”, which is
available for download for free from the Silicon Laboratories website. See the ToolStick Terminal help file for
information on how to use ToolStick Terminal.
The CP250x Motherboard routes the CP250x’s UART_TX and UART_RX pins to J2, where those signals can be
optionally connected to TB1 header.
5.5. SMBus Communications Interface (TB2, J1)
The CP250x Motherboard connects the SMBus interface pins SMBUS_SDA and SMBUS_SCL to the TB2 header.
These two pins can be pulled up to the VIO net through the two pull-up resistors, R1 and R2, by adding the shorting
block to the J1 header. Only one set of pull-up resistors is required on any SMBus network. The shorting block on
the J1 header should be removed if the pull-up resistors are already present on the network.
The R1 and R2 pull-up resistors are 1K resistors and are located on the backside of the mother board near the TB2
header.
5.6. SPI Communications Interfaces (TB3)
The CP250x Motherboard connects the SPI interface pins, SPI_SCLK, SPI_MISO, SPI_MOSI, and SPI_NSS to
the TB3 header.
5.7. GPIO Interfaces (H1, H2)
The CP2501 devices support 16 GPIO pins (GPIO0 through GPIO15). These GPIO pins are connected to the two
headers H1 and H2.
5.8. Daughter Board (P3, J1)
The P3 header on the daughter board is the USB connection for the CP2501. The J3 header selects how the
CP2501 on the daughter board is powered. If a shorting block is connected to J1[VBUS-VREGIN], the CP2501 is
powered from the P3 USB connector. If a shorting block is connected to J1[VDD-VREGIN], the CP2501 is powered
from the motherboard.
Rev. 0.1
9
Figure 6. CP250x Motherboard Schematic (1 of 2)
CP2501-DK
6. Schematics
10
Rev. 0.1
Figure 7. CP250x Motherboard Schematic (2 of 2)
CP2501-DK
Rev. 0.1
11
Figure 8. CP2501 Development Daughter Board Schematic
CP2501-DK
12
Rev. 0.1
CP2501-DK
NOTES:
Rev. 0.1
13
CP2501-DK
CONTACT INFORMATION
Silicon Laboratories Inc.
400 West Cesar Chavez
Austin, TX 78701
Tel: 1+(512) 416-8500
Fax: 1+(512) 416-9669
Toll Free: 1+(877) 444-3032
Please visit the Silicon Labs Technical Support web page
and register to submit a technical support request.
The information in this document is believed to be accurate in all respects at the time of publication but is subject to change without notice.
Silicon Laboratories assumes no responsibility for errors and omissions, and disclaims responsibility for any consequences resulting from
the use of information included herein. Additionally, Silicon Laboratories assumes no responsibility for the functioning of undescribed features
or parameters. Silicon Laboratories reserves the right to make changes without further notice. Silicon Laboratories makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Silicon Laboratories assume any liability
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. Silicon Laboratories products are not designed, intended, or authorized for use in applications intended to
support or sustain life, or for any other application in which the failure of the Silicon Laboratories product could create a situation where personal injury or death may occur. Should Buyer purchase or use Silicon Laboratories products for any such unintended or unauthorized application, Buyer shall indemnify and hold Silicon Laboratories harmless against all claims and damages.
Silicon Laboratories and Silicon Labs are trademarks of Silicon Laboratories Inc.
Other products or brandnames mentioned herein are trademarks or registered trademarks of their respective holders.
14
Rev. 0.1