IS2083 Getting Started

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The IS2083 series is an 8051 based device from Microchip that is designed for low power Bluetooth applications.

J-Link support

J-Link supports the Microchip IS2083 series devices. For an overview which min. hardware of J-Link is required for support, please refer to the feature overview.

Hardware connection to BM83 EVB

J-Link uses the Microchip 2-wire JTAG protocol to communicate with the IS2083 MCU. This protocol specifies the following pins which are all mandatory to connect:

  • RESET (mandatory to enable 2-wire JTAG protocol on the IS2083)
  • VTref (used as reference voltage by J-Link to adapt to different CPU operating voltages)
  • GND
  • bi-directional data pin
  • clock (provided by J-Link)

On the BM8x EVB connector J301 is used to connect J-Link to the IS2083 MCU.

We recommend to use the J-Link Microchip 2-Wire JTAG TDI Adapter to connect J-Link to J301.

J301 pin J-Link pin
1 15 (RESET, blue)
2 1 (VTref, red)
3 4 (GND, black)
4 5 (TDI, green)
5 9 (TCK, yellow)
BT5511 BoardConnector.png

Verifying connection with J-Link Commander

J-Link Commander (JLink.exe from the J-Link package) can be used to verify the connection between J-Link and the IS2083 device.

  • Download the J-Link IS2083 package: Download
  • Start J-Link Commander (JLink.exe)
BT5511 JLinkCommander.png

Supported IDEs and debuggers

Currently, the IS2083 is only supported in J-Link Commander and Keil uVision for PK51. Other utilities (J-Flash, ...) / IDEs etc. do not support this device series.

Debugging with Keil C51 tools


  • Download and install Keil C51/PK51 tools V9.59 or later: Download
  • Download the latest J-Link software from our website (to make sure that the USB drivers etc. are installed): Download
  • Download the J-Link IS2083 Keil package:
  • Make sure uVision is NOT started before continuing
  • Go to Keil installation directory
    KeilPK51 InstallDir.png
  • Open TOOLS.INI in text editor and add the following line (if TDRV10 already exists, use the next available number/entry):
    TDRV10=BIN\JLinkIS2083.dll ("J-Link / J-Trace IS2083 Driver")
    KeilPK51 ToolsINI Edit.png
  • Navigate to BIN\
    KeilPK51 BINDir.png
  • Copy the following files from the J-Link package to this directory:
    • JLinkIS2083.dll
    • JLinkARM.dll
      KeilPK51 BINDir After.png

Debug session

  • Connect to the PC
  • Wait until the green LED of J-Link becomes steady and stops blinking
  • Download the Microchip BM83 SDK application sample project from Microchip
  • Make sure that you followed the initial preparation steps for the BM83x EVB from Microchip (flashing of initial image + DSP config etc.)
  • Open project in uVision
  • Go to the project options
  • Verify that your options look like as follows:
  • 'Device' tab:
    KeilPK51 BT5511 Options Device.png
  • 'Debug' tab:
    KeilPK51 BT5511 Options Debug.png
  • Click on 'Settings'
    KeilPK51 BT5511 Options Debug Use.png
  • 'Settings' dialog
    KeilPK51 BT5511 Options JLink.png
  • Connect your target HW to J-Link via J-Link Microchip 2-wire JTAG TDI adapter
  • Rebuild the application (Project -> Rebuild all target files)
  • Start a debug session by clicking the "debug" symbol (Ctrl + F5)1
  • Happy debugging!

1 If you are asked if you want to update the J-Link firmware, please hit YES.