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USB 12 Mbit/s, JTAG, SWD, SWT, 4MB buffer Trace via ETM (Cortex)


  • USB-driven JTAG and Trace (38-pin Mictor) interface
  • Supports all ARM7 and ARM9 devices
  • Free software updates1, 2 years of support
  • No power supply required, powered through USB, although external power supply plug is available
  • JTAG speed 12 MHz
  • Auto speed recognition
  • USB 2.0
  • Adaptive clock based on RTCK JTAG signal
  • All signals can be monitored, target voltage can be measured
  • 20-pin standard JTAG connector, 38-pin standard Trace Mictor connector
  • USB, 20-pin flat cable and 38-pin trace cable included
  • Full integration with the C-SPY Debugger; advanced debugging features available from C-SPY
  • Integration into IAR Embedded Workbench for ARM makes setup and use easy
  • Supported platforms: Windows 2000 / XP / 2003 / Vista / 7

Trace features

  • Trace supports up to 200 MHz full and 100 MHz half clock rate
  • Trace based on ARM ETM (Embedded Trace Macrocell)
  • Trace support for devices with built-in trace ports
  • 2 Mbyte trace memory buffer
  • Compact housing, fits easily on the desk
  • Silent, fanless design
  • Support for cycle accurate and compressed tracing
  • Supports 4 / 8 / 16 bit trace port at both full and half-rate clocking
  • Trace window synchronizes to source and disassembly window
  • Function trace shows called functions hierarchically

1As a legitimate owner of a SEGGER J-Trace, you can always download the latest software free of charge. Though not planned and not likely, we reserve the right to change this policy. Note that older models may not be supported by newer versions of the software. Typically, we support older models with new software at least 3 years after end of life.

Supported OS Microsoft Windows 2000
Microsoft Windows XP
Microsoft Windows XP x64
Microsoft Windows 2003
Microsoft Windows 2003 x64
Microsoft Windows Vista
Microsoft Windows Vista x64
Windows 7
Windows 7 x64
Windows 8
Windows 8 x64
Mac OSX 10.5 and higher
Electromagnetic compatibility (EMC) EN 55022, EN 55024
Operating temperature +5°C ... +60°C
Storage temperature -20°C ... +65 °C
Relative humidity (non-condensing) Max. 90% rH
Size (without cables) 123mm x 68mm x 30mm
Weight (without cables) 120g
USB interface USB 2.0, Hi-Speed
Target interface JTAG/SWD 20-pin (14-pin adapter available)
JTAG/SWD + Trace 19-pin
JTAG/SWD Interface, Electrical
Power supply USB powered
Max. 50mA + Target Supply current.
Target interface voltage (VIF) 1.2V ... 5V
Target supply voltage 4.5V ... 5V (if powered with 5V on USB)
Target supply current Max. 300mA
LOW level input voltage (VIL) Max. 40% of VIF
HIGH level input voltage (VIH) Min. 60% of VIF
JTAG/SWD Interface, Timing
Data input rise time (Trdi) Max. 20ns
Data input fall time (Tfdi) Max. 20ns
Data output rise time (Trdo) Max. 10ns
Data output fall time (Tfdo) Max. 10ns
Clock rise time (Trc) Max. 10ns
Clock fall time (Tfc) Max. 10ns
Trace Interface, Electrical
Power supply USB powered
Max. 50mA + Target Supply current.
Target interface voltage (VIF) 1.2V ... 5V
Voltage interface low pulse (VIL) Max. 40% of VIF
Voltage interface high pulse (VIH) Min. 60% of VIF
Trace Interface, Timing
TRACECLK low pulse width (Twl) Min. 2ns
TRACECLK high pulse width (Twh) Min. 2ns
Data rise time (Trd) Max. 3ns
Data fall time (Tfd) Max. 3ns
Clock rise time (Trc) Max. 3ns
Clock fall time (Tfc) Max. 3ns
Data setup time (Ts) Min. 3ns
Data hold time (Th) Min. 2ns