SILICON LABS C8051F500 Development Kit User Guide

SILICON LABS C8051F500 Development Kit Relevant Devices

The C8051F500 Development Kit is intended as a development platform for the microcontrollers in the C8051F50x/51x MCU family.

• The target board included in this kit is provided with a pre-soldered C8051F500 MCU (LQFP48 package) and a C8051F502 (QFN32 package).
• Code developed on the C8051F500 can be easily ported to the other members of this MCU family.
• Refer to the C8051F50x/51x data sheet for the differences between the members of this MCU family.

Kit Contents

The C8051F500 Development Kit contains the following items:

• C8051F500 Target Board
• C8051Fxxx Development Kit Quick-Start Guide
• AC to DC Power Adapter
• USB Debug Adapter (USB to Debug Interface)
• Two USB Cables

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 one of the DEBUG connectors on the target board (DEBUG_A or DEBUG_B) with the 10-pin ribbon cable. The recommended connection is to DEBUG_A as this microcontroller is the primary MCU on the board and more peripherals are easily available.
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 P4 on the target board.

Notes:

1. Use the Reset button in the IDE to reset the target when connected using a USB Debug Adapter.
2. 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.

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.

The following Simplicity Studio components are required for the C8051F500 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 C8051F50x/51x family by checking the C8051F50x/51x 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.

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 C8051F500 Development Kit, in the Part drop-down, select C8051F500, and in the SDK drop-down, select the desired SDK. Click Next.
3. Select Example and click Next.
4. Under C8051F500 Development Kit, select F50x Blinky, click Next, 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.

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.

CP210x USB to UART VCP Driver Installation

The Target Board 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.

1. After opening Simplicity Studio for the first time, a dialog will prompt to install the CP210x drivers. Click Yes. The drivers can also be installed at any time by going to Help Install Drivers CP210x VCP USB Drivers.
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 USB connector (P4) on the Target Board. 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 Windows Driver Package—Silicon Laboratories… option in the Programs and Features window.

Configuration Wizard 2

The Configuration Wizard 2 is a code generation tool for all of the Silicon Laboratories devices. Code is generated through the use of dialog boxes for each of the device’s peripherals.

The Configuration Wizard 2 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 Laboratories MCU. The program is configurable to provide the output in C or assembly. For more information, please refer to the Configuration Wizard 2 help available under the Help menu in Config Wizard 2.

Target Board

The C8051F500 Development Kit includes a target board with a C8051F500 (Side A) and C8051F502 (Side B) device preinstalled 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. Figure 5 on page 7 shows the factory default shorting block positions. A summary of the signal names and headers is provided in Table 12 on page 14.

Table 1. Target Board Connector Summary

regulator (U6)
J8| Side B: CAN Transceiver (U4) power connector
J9, J10| Side A: External crystal enable connectors
J11| Side B: Connects P1.3_B LED and P1.4_B Switch to MCU port pins
J14| Side A: CAN Transceiver (U3) power connector
J17| Side A: Connects MCU to three separate transceivers (UART(U5), CAN(U3) and LIN(T1))
J18| Side A: Connects VIO to VIO_A_SRC which powers the P1.2 potentiometer, the /RST_A pin pull-up, and P1.4_A Switch pull-up.
J19| Side A: Connects P1.3_A LED and P1.4_A Switch to MCU port pins
J20| Side A: Connects R27 potentiometer to port pin 1.2
J21| Connect V_HIGH node from TB1 LIN header to +5V regulator input for board power
J22| Side A: Connects decoupling capacitors C28 and C29 for MCU VREF (P0.0)
J24| Side A: Connects +5 V net to VIO and VREGIN of the MCU
J26| Side B: Connects MCU to three separate transceivers (CAN (U4) and LIN (T2))
J27-J29| Side B: Port 0 through Port 2 headers
J31| Side B: Connects +5V net to VIO and VREGIN of the MCU
J32| Side B: Connects decoupling capacitors C41 and C42 for MCU VREF (P0.0)
P1| Side A: 96-pin female connector
P2| Side A: DEBUG connector for Debug Adapter interface
P3| Side B: DEBUG connector for Debug Adapter interface
P4| Power connector (accepts input from 7 to 15 VDC unregulated power adapter)
P5| USB connector (connects to PC for serial communication)
TB1| Shared LIN Connector for Side A and B MCUs for external nodes
TB2| Shared CAN Connector for Side A and B MCUs for external nodes
TB3| Side A: Power supply terminal block

Target Board Shorting Blocks: Factory Defaults

The C8051F500 target board comes from the factory with preinstalled shorting blocks on many headers. Figure 5 shows the positions of the factory default shorting blocks.

Target Board Power Options and Current Measurement

The C8051F500 target board supports three power options:

1. 12 V dc power using the ac to dc power adapter (P4)
2. 5 V dc USB VBUS power from PC via the USB Debug Adapter (DEBUG_A)
3. 12 V dc power from the LIN external header (TB1)

The two 12V power sources are ORed together using reverse-biased diodes (Z1 and Z2). The ORed power is regulated to a 5.0V DC voltage using a LDO regulator (U6). To power, the board from the USB Debug Adapter connected to DEBUG_A instead of the 12V sources, move the shorting block on the J7 header to pins 2 and 3 to select SER_PWR. The output of the regulator powers the +5VD net on the target board, and is also connected to one end of the header J24 (SIDE A) and J31 (SIDE B). Two shorting blocks can be put on each header to connect the 5V net to the VIRGIN and VIO pins on the two MCUs. With the shorting block removed, a source meter can be used across the headers to measure the current consumption of the MCU.

Note: The USB Debug Adapter does not provide the necessary peak power for the CAN transceivers to operate. One of the 12V DC sources is recommended for CAN transceiver operation.

System Clock Sources

Internal Oscillators

The C8051F500 and C8051F502 devices installed on the target board feature a factory calibrated programmable high-frequency internal oscillator (24 MHz base frequency, ±0.5%), which is enabled as the system clock source on reset. After reset, the internal oscillator operates at a frequency of 187.5 kHz by default but may be configured by software to operate at other frequencies. The on-chip crystal is accurate for CAN and LIN master communications and in many applications an external oscillator is not required. However, if you wish to operate the C8051F500 device (SIDE A) at a frequency not available with the internal oscillator, an external crystal may be used. Refer to the C8051F50x data sheet for more information on configuring the system clock source.

External Oscillator Options
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 MΩ resistor at R9 and install capacitors at C6 and C7 using values appropriate for the crystal you select. If you wish to operate the external oscillator in capacitor or RC mode, options to install a capacitor or an RC network are also available on the target board. Populate C6 for capacitor mode, and populate R3 and C6 for RC mode. Refer to the C8051F50x data sheet for more information on the use of external oscillators.\

Switches and LEDs
Two push-button switches are provided on the target board for each MCU. Switch RESET_A is connected to the /RST pin of the C8051F500. Switch RESET_B is connected to the /RST pin of the C8051F502. Pressing RESET_A puts the C8051F500 device into its hardware-reset state, and similarly for RESET_B and the C8051F502 MCU. Switches P1.4_A and P1.4_B are connected to the MCU’s general purpose I/O (GPIO) pins through headers. Pressing either one of these switches generates a logic low signal on the port pin. Remove the shorting block from the header to disconnect these switches from the port pins. See Table 2 for the port pins and headers corresponding to each switch.

Four LEDs are provided on the target board to serve as indicators. The red LED labeled PWR indicates presence of power to the target board. The second red LED labeled COMM indicates if the CP2102 USB-to-UART bridge (P5) is recognized by the PC. The green LED labeled with port pin name P1.3_A is connected to the C8051F500’s (Side A) GPIO pin P1.3 through the header J19. Remove the shorting block from the header to disconnect the LED from the port pin. Similarly, the green LED named P1.3_B is connected to the C8051F502 (Side B) through the J11 header. See Table 2 for the port pins and headers corresponding to each LED.

Table 2. Target Board I/O Descriptions

Target Board Debug Interfaces (P2 and P3)

The debug connectors P2 (DEBUG_A) and P3 (DEBUG_B) provide access to the debug (C2) pins of the C8051F500 and C8051F502. The debug connectors are 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

Serial Interface (P5)

A USB-to-UART bridge circuit (U5) and USB connector (P5) are provided on the target board to facilitate serial connections to UART0 of the C8051F500 (Side A). The Silicon Labs CP2102 USB-to-UART bridge provides data connectivity between the C8051F500 and the PC via a USB port. The TX and RX signals of UART0 may be connected to the CP2102 by installing shorting blocks on header J17. The shorting block positions for connecting each of these signals to the CP2102 are listed in Table 4. To use this interface, the USB-to-UART device drivers should be installed as described in Section 4.3. “CP210x USB to UART VCP Driver Installation‚” on page 4.

Table 4. Serial Interface Header (J3) Description

CAN Interface and Network (TB2)

Both MCUs on the target board are connected to CAN transceivers through headers. The port pins assigned to the CAN peripheral on each MCU are P0.6 (CAN_TX) and P0.7 (CAN_RX). The C8051F500 (Side A) is connected to U3 through the J17 header and the C8051F502 (Side B) is connected to U4 through the J26 header. The two CAN transceivers are connected to each other and form a CAN network. Other external devices can be connected to the CAN network through the TB2 interface. The shorting block positions for connecting the MCUs to the CAN transceivers are listed in Table 5. The pin connections for the external CAN devices are listed in Table 6. The CAN transceivers are powered by the +5VREG node and connected through J8 and J14 headers.

Table 5. CAN Interface Headers (J17 and J26) Description

Table 6. TB2 External CAN Interface Header Description

LIN Interface and Network (TB1)

Both MCUs on the target board are connected to LIN transceivers through headers. These headers assume that the MCU’s crossbars are configured to put the LIN TX and RX pins on port pins P1.0 and P1.1 respectively. See the C8051F50x data sheet for crossbar configuration. The C8051F500 (Side A) is connected to the T1 transceiver through the J17 header and the C8051F502 (Side B) is connected to the T2 transceiver through the J26 header. The two LIN transceivers are connected to each other and form a LIN network. Other external devices can be connected to the LIN network through the TB1 interface. The TB1 interface also provides the option for connecting an external power source so that all LIN transceivers can use the same source voltage. This source voltage can also be used to power the target board. If an external voltage source is not provided, the LIN transceivers use the 12 V provided through the P4 wall-wart connector. See “5.2. Target Board Power Options and Current Measurement” for more power option details. The shorting block positions for connecting the MCUs to the LIN transceivers are listed in Table 7.
The pin connections for the external LIN devices are listed in Table 8.

Table 7. LIN Interface Headers (J17 and J26) Description

Table 8. TB1 External LIN Interface Header Description

Port I/O Connectors (J1-J5 and J27-J29)

Each of the parallel ports of the C8051F500 (Side A) and C8051F502 (Side B) has its own 10-pin header connector. Each connector provides a pin for the corresponding port pins 0-7, +5V VIO, and digital ground. The same pin-out is used for all of the port connectors.

Table 9. Port I/O Connector Pin Description

Voltage Reference (VREF) Connectors (J22 and J32)

The VREF connectors can be used to connect the VREF pin from the MCU (P0.0) to external 0.1 uF and 4.7 uF decoupling capacitors. The C8051F500 (Side A) device is connected to the capacitors through the J22 header and the C8051F502 (Side B) device connects to its own set of capacitors through J32.

Expansion Connector (P1)

The 96-pin expansion I/O connector P1 is used to connect daughter boards to the main target board. P1 provides access to many C8051F500 signal pins. Pins for VREGIN, VDD, VIO, and 3.3V are also available. See Table 10 for a complete list of pins available at P1.
The P1 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.

Table 10. P1 Pin Listing

Potentiometer (J20)

The C8051F500 (Side A) device has the option to connect port pin P1.2 to 10K linear potentiometer. The potentimeter is connected through the J20 header. The potentiometer can be used for testing the analog-to-digital (ADC) converter of the MCU.

Power Supply I/O (Side A) (TB3)

All of the C8051F500 target device’s supply pins are connected to the TB3 terminal block. Refer to Table 11 for the TB3 terminal block connections.

Table 11. TB1 Terminal Block Pin Descriptions

C2 Pin Sharing

On the C8051F500 (Side A), the debug pin C2CK is shared with the /RST pin. On the C8051F502 (Side B), the debug pins C2CK and C2D are shared with the pins /RST and P3.0 respectively. The target board includes the resistors necessary to enable pin sharing which allow the pin–shared pins (/RST and P3.) to be used normally while simultaneously debugging the device. See Application Note “AN124: Pin Sharing Techniques for the C2 Interface” at www.silabs.com for more information regarding pin sharing.

Target Board Pin Assignment Summary

Some GPIO pins of the C8051F500 MCU can have an alternate fixed function. For example, pin 46 on the C8051F500 MCU is designated P0.4, and can be used as a GPIO pin. Also, if the UART0 peripheral on the MCU is enabled using the crossbar registers, the TX signal is routed to this pin. This is shown in the “Alternate Fixed Function” column. The “Target Board Function” column shows that this pin is used as TX on the ‘F500 Target Board. The “Relevant Headers” column shows that this signal is routed to pin 3 of the J17 header and pin 5 of the J1 header. More details can be found in the C8051F50x data sheet. Some of the GPIO pins of the C8051F500 have been used for various functions on the target board. All pins of the Side A MCU also connect to the 96-pin (P1) expansion connector which is not explicitly listed below. Table 12 summarizes the C8051F500 MCU pin assignments on the target board, and also shows the various headers associated with each signal.

Table 12. C8051F500 Target Board Pin Assignments and Headers

MCU Pin Name| Pin#| Primary Function| Alternate Fixed Function| Target Board Function| Relevant Headers
---|---|---|---|---|---
P0.0| 8| P0.0| VREF| VREF| J1[1], J22[1]
P0.1| 1| P0.1| CNVSTR| CNVSTR| J1[2]
P0.2| 48| P0.2| XTAL1| XTAL1| J1[3], J9[1]
P0.3| 47| P0.3| XTAL2| XTAL2| J1[4], J10[1]
P0.4| 46| P0.4| UART_TX| TX_MCU| J1[5], J17[3]
P0.5| 45| P0.5| UART_RX| RX_MCU| J1[6], J17[1]
P0.6| 44| P0.6| CAN_TX| CNVSTR| J1[7], J17[5]
P0.7| 43| P0.7| CAN_RX| SW2 (switch)| J1[8], J17[7]
P1.0| 42| P1.0|  | LIN_TX| J2[1], J17[9]
P1.1| 41| P1.1|  | LIN_RX| J2[2], J17[11]
P1.2| 40| P1.2|  | POTENTIOME- TER| J2[3], J20[1]
P1.3| 39| P1.3|  | LED| J2[4], J19[3]
P1.4| 38| P1.4|  | SWITCH| J2[5], J19[1]
P1.5| 37| P1.5|  | GPIO| J2[6]
P1.6| 36| P1.6|  | GPIO| J2[7]
P1.7| 35| P1.7|  | GPIO| J2[8]
P2.0| 34| P2.0|  | GPIO| J3[1]
P2.1| 33| P2.1|  | GPIO| J3[2]
P2.2| 32| P2.2|  | GPIO| J3[3]
P2.3| 31| P2.3|  | GPIO| J3[4]
P2.4| 30| P2.4|  | GPIO| J3[5]
P2.5| 29| P2.5|  | GPIO| J3[6]
P2.6| 28| P2.6|  | GPIO| J3[7]
MCU Pin Name| Pin#| Primary Function| Alternate Fixed Function| Target Board Function| Relevant Headers
---|---|---|---|---|---
P2.7| 27| P2.7|  | GPIO| J3[8]
P3.0| 26| P3.0|  | GPIO| J4[1]
P3.1| 25| P3.1|  | GPIO| J42]
P3.2| 24| P3.2|  | GPIO| J4[3]
P3.3| 23| P3.3|  | GPIO| J4[4]
P3.4| 22| P3.4|  | GPIO| J45]
P3.5| 21| P3.5|  | GPIO| J4[6]
P3.6| 20| P3.6|  | GPIO| J4[7]
P3.7| 19| P3.7|  | GPIO| J4[8]
P4.0| 18| P4.0|  | GPIO| J5[1]
P4.1| 17| P4.1|  | GPIO| J5[2]
P4.2| 16| P4.2|  | GPIO| J5[3]
P4.3| 15| P4.3|  | GPIO| J5[4]
P4.4| 14| P4.4|  | GPIO| J5[5]
P4.5| 13| P4.5|  | GPIO| J5[6]
P4.6| 10| P4.6|  | GPIO| J5[7]
P4.7| 9| P4.7|  | GPIO| J5[8]
/RST/C2CK| 12| /RST| C2CK| /RST/C2CK| P2[7], P2[5]
C2D| 11| C2D|  | C2D| P2[4]
VIO| 2| VIO|  | VIO| J24[4], J18[1], TB3[1] J1-J5[9]
VREGIN| 3| VREGIN|  | VREGIN| J24[2], P2[5], TB3[2]
VDD| 4| VDD|  | VDD| TB3[3]
VDDA| 5| VDDA|  | VDDA| TB3[4]
GND| 6| GND|  | GND| J1-J5[10], TB3[6]
GNDA| 7| GNDA|  | VDD| TB3[5]
*Note: Headers denoted by this symbol are not directly connected to the MCU pin; the connection might be via one or more headers and/or pin-sharing resistor(s). See board schematic for details.

Schematics

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Silicon Laboratories intends to provide customers with the latest, accurate, and in-depth documentation of all peripherals and modules available for system and software implementers using or intending to use the Silicon Laboratories products. Characterization data, available modules and peripherals, memory sizes and memory addresses refer to each specific device, and “Typical” parameters provided can and do vary in different applications. Application examples described herein are for illustrative purposes only. Silicon Laboratories reserves the right to make changes without further notice and limitation to product information, specifications, and descriptions herein, and does not give warranties as to the accuracy or completeness of the included information. Silicon Laboratories shall have no liability for the consequences of use of the information supplied herein. This document does not imply or express copyright licenses granted hereunder to design or fabricate any integrated circuits. The products must not be used within any Life Support System without the specific written consent of Silicon Laboratories. A “Life Support System” is any product or system intended to support or sustain life and/or health, which, if it fails, can be reasonably expected to result in significant personal injury or death. Silicon Laboratories products are generally not intended for military applications. Silicon Laboratories products shall under no circumstances be used in weapons of mass destruction including (but not limited to) nuclear, biological or chemical weapons, or missiles capable of delivering such weapons.

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References

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• Simplicity Studio - Silicon Labs

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