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Flasher PRO & PRO XL

Flasher PRO & PRO XL

Flasher PRO

Professional Production Programmer

Flasher PRO is a programming tool for microcontrollers with on-chip or external Flash memory and ARM, RX or PPC core. Flasher PRO is designed for programming flash targets with the J-Flash software or stand-alone. Flasher PRO connects via USB, Ethernet or via RS232 interface to a PC, running Microsoft Windows 2000, Windows XP, Windows 2003, Windows Vista, Windows 7, Windows 8 or Windows 10 and has a built-in 20-pin JTAG connector, which is compatible with the standard 20-pin connector defined by ARM.


  • Stand-alone JTAG/SWD programmer (Once set up, Flasher can be controlled without the use of PC program)
  • Ethernet interface
  • Supports internal and external flash devices
  • Wide range of devices are supported.
  • Free software updates, 2 years of support
  • 128 MB internal NAND flash, used for storing configuration and data files.
  • Serial in target programming supported
  • Data files can be updated as mass storage or via J-Flash
  • Target interface: JTAG/SWD
  • No power supply required, powered through USB
  • Can be used as J-Link (JTAG emulator) with a download speed of up to 1 Mbyte/second
  • Programming speed between 30 Kbytes/second and 1 MByte/second. Max. progamming speed highly dependent on target hardware and max. programming speed of the flash itself.
  • ASCII command interface to control Flasher without the use of PC program
  • Authorised Flashing allows to limit the number of flash programming cycles and to protect the Flasher against non-authorised access in case of external production

Getting Started

Flasher can be used for programming flash targets with the J-Flash software or stand-alone.

Setting up Flasher for the first use

In order to use Flasher for the first time you need to install the Flasher related software and documentation pack which, among others, includes the J-Flash software and connect Flasher to the host PC via USB.

Power-on sequence

In general, Flasher should be powered on before connecting it with the target device. That means you should first connect Flasher with the host system via USB / RS232 and then connect Flasher with the target device via JTAG. Power-on the device after you connected Flasher to it. If you use Flasher in stand-alone mode, just power-on Flasher via external power supply.

Verifying target device connection with J-Link Commander

If the USB driver is working properly and your Flasher is connected with the host system, you may connect Flasher to your target hardware. Then start the J-Link command line tool JLink.exe, which should now display the normal Flasher related information and in addition to that it should report that it found a JTAG target and the target’s core ID. The screenshot shows the output of JLink.exe. As can be seen, it reports a Flasher with 3 JTAG devices connected. 

Verifying target device connection with J-Flash

Another way to verify the target connection is to connect to the target using J-Flash. To connect to the target with J-Flash you have to choose an appropriate project file for the target first. After opening the project file choose Target –> Connect from the menu to connect to the target.

Using Flasher with PC Software “J-Flash”

J-Flash is a software running on Windows (Windows 2000 or later) systems and enables you to program your flash EEPROM devices via the JTAG connector on your target system. J-Flash works with any device/core that is supported by J-Link and supports all common external flashes, as well as the programming of internal flash of ARM microcontrollers. It allows you to erase, fill, program, blank check, upload flash content, and view memory functions of the software with your flash devices.

Remote Control of Flasher

Flasher can be remote controlled by automated testers without the need of a connection to PC and Flasher’s PC program. Therefore Flasher is equipped with additional hardware control functions which are connected to the SUBD9 male connector, normally used as RS232 interface to PC.

Supported Devices

Flasher PRO supports a wide range of CPU cores and an even wider range of different devices from various vendors.

Universal Flash Loader

Besides programming the flash memory via the debug interface (JTAG), there are some devices which are programmed via a device-specific programming interface. These interfaces can be supported by the Universal Flash Loader, a feature for the Flasher PRO and the Flasher Portable PLUS. The Universal Flash Loader supports the serial programming interface of the Renesas RL78 device family, based on a 16 bit microcontroller including over 1000 devices.

Flasher PRO XL

The universal flash programmer for huge images

The Flasher PRO XL is the extra-large memory version of SEGGER’s Flasher PRO. With all the same features of the Flasher PRO, the Flasher PRO XL expands upon the original’s 128 MB memory with 2 gigabytes—16 times as much internal flash memory. This memory can be used to store a variety of large program images. With its huge memory capacity, Flasher PRO XL can also program target systems running large footprint OSes such as Android, Linux, and Windows IoT.

Flasher PRO XL can be used in stand-alone or PC-based mode. It connects via USB, Ethernet or an RS232 interface. Like the Flasher PRO, the Flasher PRO XL supports a wide range of CPU cores and an even wider range of different devices from various vendors. Software and firmware updates are included. Similarly, use on all target devices currently supported, and on any that will be added, is also included.