JTAG for programming and debugging MAXQ microcontrollers

This item is OBSOLETE



  • Programs all MAXQ flash microcontrollers
  • Supports targets with voltage in range 2.0-3.6VDC
  • Uses Maxim-Dallas standard 2x5 pin JTAG connector
  • No need for an external power supply, all power is taken from the USB port, MAXQ-JTAG-USB can supply 5V to target via JTAG port
  • Compatible with MAXQ-IDE, IAR Kickstart, Rowley Cross Connect for programming, real time emulation, debugging, step by step program execution, breakpoints, memory dump etc everything that all the high priced emulators do
  • This unit has a female USB 'A' connector on it which means you will need a USB A to A Male/Male cable to connect it to a computer.
  • Dimensions 50x40 mm (2x1.6") + 20 cm (8") cable



  • MAXQ-IDE (included in MAXQ-CD)
  • MAXQ- IAR Workbench (included in MAXQ-CD)
  • MAXQ Cross Works

USB driver Install instructions

USB driver for the MAXQ-JTAG-USB install a "Virtual" serial COM port on your PC.

This unit use a FTDI USB to serial bridge chip for that and the drivers for it can be downloaded from

When you plug the unit into your PC's USB port Windows new hardware wizard should prompt you for drivers.

Direct it to the directory into which you downloaded and unzipped the drivers.

After installation go to Control Panel->System->HArdware->Device Manager and look under Ports (COM & LPT)

You should see an entry USB Serial port (COMx) where x is the port number of that virtual port. Use this serial port number you

Use with MAX-IDE

(If Windows assigns a port number higher than 4 you can change that by right clicking on the entry in device manager, select properties->port settings-> advanced)