Silicon Laboratories DEBUGADPTR1-USB User manual

Rev. 0.2 6/13 Copyright © 2013 by Silicon Laboratories 8-Bit USB Debug Adapter
8-Bit USB Debug Adapter
8-BIT USB DEBUG ADAPTER USER’SGUIDE
1. Introduction
The 8-bit USB Debug Adapter (UDA) provides the interface between the PC’s USB port and the Silicon Labs 8-bit
target device’s in-system debug/programming circuitry. The 10-pin ribbon cable connects the adapter to the target
board and the target device’s debug interface.
There are two versions of the 8-bit USB Debug Adapter: the original 8-bit adapter is the EC3, and the new 8-bit
debug adapter is UDA-8. The new adapters (UDA-8) are no longer compatible with older versions of Silicon
Laboratories software. Silicon Labs strongly recommends upgrading the software to the latest versions of the
Silicon Laboratories 8-bit IDE and Flash Programming Utilities. The older 8-bit debug adapter, EC3, will be
discontinued September 30th, 2013. Visit www.silabs.com/8bit-uda for more information.
To differentiate between the two adapters, the UDA-8 adapters have a UDA-8 sticker on the bottom. The EC3
adapters will either not have this sticker or have an EC3 sticker.
Figure 1. 8-Bit USB Debug Adapter
The UDA-8 debug adapter is compatible with the following tools from Silicon Laboratories.
8-bit IDE Software, version 4.50 and later.
8-bit Flash Programming Utility, version 4.10 and later.
The EC3 will continue to be supported by all versions of the software.
2. Relevant Documentation
Application notes can be found on the 8-bit MCU Application Notes web page: www.silabs.com/appnotes.
AN124: Pin Sharing Techniques for the C2 Interface—Describes in detail the debug interface pin
sharing feature for C2 devices, which enables debugging and use of the /RST and GPIO pins shared with
C2CK and C2D.
AN117: Using C8051Fxxx On-Chip Interface Utilities DLL—The SiUtil DLL discussed in this document
uses the USB Debug Adapter to program the memory space of C2 and JTAG devices.
AN134: Multiple-Device JTAG Configuration in the Silicon Labs IDE—Configuration in the IDE and
using the USB Debug Adapter for devices in a JTAG chain.

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3. Pinout Specification
The 8-Bit USB Debug Adapter supports both Silicon Laboratories JTAG and C2 debug interfaces, and the adapter
is powered from the USB connection to the PC. The UDA is also capable of providing power to the target device or
other circuitry via pin 10 of the connector. Table 1 shows the pin definitions for the UDA keyed connector. The part
number for the matching shrouded and keyed connector for a PCB is 2510-6002UB from 3M.
The USB Debug Adapter can automatically change the communication voltage level based on the level detected
on pin 7 of the connector. As a result, this pin should be pulled high with a strong pull-up (~1 kΩ) for noise immunity
purposes and not pulled down to ground.
Notes:
• The USB Debug Adapter requires a target system clock of 32 kHz or greater.
• With the default settings, the USB Debug Adapter can supply up to 100 mA to a target system.
Figure 2. 8-Bit USB Debug Adapter Connector
Table 1. USB Debug Adapter Debug Connector Pin Descriptions
Pin # Description Details
1 Not Connected
2 GND (Ground)
3 GND (Ground)
4 TCK / C2D JTAG TCK or C2 Data
5 TMS / C2CK pin share JTAG TMS or C2 Clock pin sharing
6 TDO / C2D pin share JTAG TDO or C2 Data pin sharing
7 TDI / C2CK JTAG TDI or C2 Clock signal
This pin is used by the UDA to sense and set
the logic voltage level. This pin should never
have a pull-down to ground.
8 Not Connected
9 GND (Ground)
10 USB Power 5 V power from the UDA
1
2
3
4
9
8
7
6
5
10

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4. Minimum C2 Programming Connections
The minimum required programming connections for the C2 interface are C2D (pin 4), C2CK (pin 7), and ground
(pins 2, 3, or 9).
5. Hardware Setup using a USB Debug Adapter
Connect a target board to a PC running the Silicon Laboratories IDE via the USB Debug Adapter as shown in
Figure 3.
1. Connect the USB Debug Adapter’s 10-pin ribbon cable to the JTAG or Debug connector on the target
board.
2. Connect one end of a standard 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. Power the target board.
Notes:
•UsetheReset 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 3. Hardware Setup using a USB Debug Adapter
6. USB Drivers
The USB Debug Adapter uses the Human Interface Device (HID) USB interface to communicate with the PC.
Since most operating systems have this driver automatically built in, no drivers need to be installed to use the UDA.
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7. Software Setup using a USB Debug Adapter
The Silicon Laboratories Integrated Development Environment (IDE) along with other software tools are provided
for device development and debugging. The IDE is available for download from the Silicon Laboratories website
(www.silabs.com/mcudownloads) and is also available on microcontroller development kit CD-ROMs.
7.1. Adapter Versions
There are two versions of the 8-bit USB Debug Adapter: the original 8-bit adapter is the EC3, and the new 8-bit
debug adapter is UDA-8. The older 8-bit debug adapter, EC3, will be discontinued September 30th, 2013.
The UDA-8 debug adapter is compatible with the following tools from Silicon Laboratories.
8-bit IDE Software, version 4.50 and later.
8-bit Flash Programming Utility, version 4.10 and later.
The EC3 will continue to be supported by all versions of the software.
To differentiate between the two adapters, the UDA-8 adapters have a UDA-8 sticker on the bottom. The EC3
adapters will either not have this sticker or have an EC3 sticker. Visit www.silabs.com/8bit-uda for more
information.
7.2. Configuring the USB Debug Adapter in the Silicon Labs IDE
Once the IDE has been installed and the hardware has been connected as shown in Section 5, follow the steps
below to built a project, connect and download to a target board using the USB Debug Adapter.
1. Select ProjectOpen Project... to open a previously
saved project.
2. Before connecting to the target device, several
connection options may need to be set. Open the
Connection Options window (shown in Figure 4) by
selecting OptionsConnection Options... in the IDE
menu.
3. Select USB Debug Adapter in the Serial Adapter
section.
4. If more than one adapter is connected, choose the
appropriate serial number from the drop-down list.
5. Check the Power target after disconnect option if the
target board is currently being powered by the USB
Debug Adapter. The board will remain powered after a
software disconnect by the IDE.
6. Next, the correct Debug Interface must be selected.
Check the Debug Interface corresponding to the
Silicon Laboratories device on the target board.
7. Once all the selections are made, click the OK button to
close the window.
8. Click the Connect button in the toolbar or select
DebugConnect from the menu to connect to the
device.
9. Download the project to the target by clicking the
Download Code button in the toolbar.
10. 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.
Figure 4. Connection Options

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8. Schematics
Figure 5. 8-Bit USB Debug Adapter Schematic (UDA-8) (page 1 of 2)

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Figure 6. 8-Bit USB Debug Adapter Schematic (UDA-8) (page 2 of 2)

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CONTACT INFORMATION
Silicon Laboratories Inc.
400 West Cesar Chavez
Austin, TX 78701
Please visit the Silicon Labs Technical Support web page:
https://www.silabs.com/support/pages/contacttechnicalsupport.aspx
and register to submit a technical support request.
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