Flasher Pro

Q: Can the Flasher supply power to the target?

Yes. All Flasher models feature a variable target power supply that provides the target with the required voltage directly through the target interface.

Q: What is the maximum voltage that can be handled by the galvanic isolation of the Ethernet interface?

The Ethernet data lines are galvanically isolated in accordance with IEEE 802.3, tested at 1500 Vrms for one minute. This isolation applies only to the data lines, not to the Ethernet shield, which has a direct electrical connection to the USB shield and a resistive and capacitive coupling to probe ground (GND). For effective galvanic isolation, an unshielded twisted pair (UTP) Ethernet cable should be used.

Q: Which flash memory types does the Flasher Pro support?

The Flasher Pro supports internal flash memory on microcontrollers as well as external flash types, including QSPI, SPI, and CFI NOR flash. It handles virtually any in-system programming (ISP) task for embedded systems.

Q: Can I limit the number of times a firmware image is flashed?

Yes. Using the Authorized Flashing feature, you can set a secure limit on the number of programming cycles. This prevents overproduction and contract manufacturing theft by ensuring the firmware flash tool stops working once the authorized limit is reached.

Q: Does it support Linux and macOS?

Yes. The Flasher Pro is a cross-platform tool. The configuration software and command-line utilities run natively on Windows, Linux, and macOS.

Q: What happens if my specific chip isn't listed?

The Flasher Pro supports tens of thousands of devices. If yours isn't listed, you can often add support yourself using the Flasher SDK , or you can contact SEGGER support to request a new flash loader.

A universal flash programmer for high-speed in-system programming

Universal in-system programmer (ISP) for microcontrollers and SoCs
Supports a wide range of devices and hundreds of interfaces
High-speed, scalable programming for development environments and mass production

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Key features

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High-speed programming

Flasher Pro achieves flash programming speeds that approach the theoretical maximum. For MCUs that allow memory access while running, for example, Flasher Pro’s "turbo mode" minimizes overhead by downloading and programming simultaneously, enabling unmatched speeds.

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Supported devices

SEGGER Flasher supports a wide range of microcontrollers, processors, and SoCs from leading semiconductor manufacturers. Supports a wide range of devices across hundreds of device families, with new devices continuously added through software updates.

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Stand-alone operation

Each Flasher single-unit programmer is designed to operate independently, without the need for a connected PC. This standalone capability ensures that programming tasks are performed efficiently and reliably in any environment.

A SEGGER Flasher device is shown in the center, featuring a silver and blue casing with labels for "Ready," "Not ready," and "Fail." The background has a colorful tech-themed design with swirling patterns and digital elements, and there’s a blue rocket icon in the bottom right corner.

Top-Speed Guarantee

SEGGER Flashers deliver maximum programming performance and set the benchmark for speed in real-world applications. SEGGER guarantees that Flasher is faster than any other in-system programmer on the market.

Maximum programming speed across devices and interfaces
Proven real-world performance
Continuous optimization for leading performance

Supported devices

The list of supported manufacturers, families, devices, and SoCs includes tens of thousands of devices in hundreds of device families.

Device not listed? Please don’t hesitate to contact us.

Use cases

Diagram depicting a hardware setup for programming a flash microcontroller. It features a device labeled "Flasher PRO" connected via blue lines to a flash microcontroller and a QSPI flash memory component, outlining the connections between these elements.

Boosts in production at scale

Flasher Pro is built to maximize flash programming speed for single or multiple programming lines within production environments, particularly when using (Q)SPI. By minimizing programming times, Flasher Pro maximizes the number of devices that can be programmed per hour.

Flasher Pro's significant improvements on production time are demonstrated in this customer story:
Flasher Pro increases production reliability at VIESSMANN

The image depicts a SEGGER Flasher PRO device on the left, connected to a graphical representation featuring three labeled sections: A, B, and C. The connection includes various lines, indicating a data or programming flow between the device and these sections.

Universal support for diverse hardware

In production environments, different hardware platforms often have to be programmed with different firmware images. As a universal flash programmer, Flasher Pro handles these distinct platforms—including Arm Cortex, Renesas RX/RL78, RISC-V and PowerPC—with just one device.

Users can store multiple data and configuration files on the unit, and it is even possible to program multiple embedded systems located in a JTAG chain. Each target can be programmed with an individual configuration and specific data file.

How Flasher Pro works

Flasher Pro writes firmware to a device's non-volatile memory, verifies the contents, and provides immediate feedback through LEDs, software, or via hardware interfaces. It connects to target devices via standard interfaces (such as JTAG, SWD or UART). All Flasher models feature a variable target power supply, providing the target with the required voltage directly through the target interface.

In PC-controlled mode, flash programming is managed directly from a host computer using SEGGER tools like J‑Flash. In standalone mode, Flasher Pro uses preloaded firmware images stored in its internal memory. Programming can be triggered through the press of a button, a TTL signal, or remotely via USB, UART, RS232, or Ethernet.

Tool set

Flasher Deployer

Flasher Deployer is designed to centrally manage and distribute programming images. It is ideal for production environments where consistent image deployment across multiple Flasher units is essential.

A black rectangular panel labeled "Tool set" features a blue icon depicting a downward arrow with lines beneath it, suggesting downloading or installation. The background consists of a dynamic blue pattern resembling flowing lights or waves.

U-Flash

U-Flash is a programming tool designed around minimal setup and configuration requirements, efficiency, and ease of use. It simplifies workflows by enabling rapid deployment through user friendly guidance.

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J-Flash

J-Flash is a comprehensive, versatile tool for programming flash memory on MCUs and external flash devices. It is ideal for complex production environments that require high configurability and control.

Flasher SDK

The Flasher Software Development Kit enables users to extend Flasher functionality in two ways: by adding support for new or unsupported devices through custom Flasher Device Packs and by developing custom Flasher Apps. These apps run directly on the programmer and can handle device programming, system testing, and diagnostics. The SDK includes all necessary tools, documentation, and examples for developing and testing custom solutions. Available in the Web Shop, it provides flexibility for integrating proprietary hardware and custom applications into production workflows.

More information

An image depicting a central chip labeled "Flasher BitStreamer," with binary code and an arrow signaling data transfer. Two smaller chips labeled "FPGA" and "CPLD" are positioned below it, indicating components related to programmable logic devices. The background features a network-like pattern.

Programming FPGAs and CPLDs

Production departments faced with the task of programming FPGAs or CPLDs do not require the Flasher SDK, as Flasher programmers can program FPGAs and CPLDs using the Flasher BitStreamer.

More information

Cross-platform software

As a multi-platform solution, Flasher Pro comes with SEGGER's Flasher Software and Documentation Package for Windows, Linux, and macOS. It provides the tools and resources necessary for configuring, managing, and using Flasher Pro effectively. It also includes flash loaders for all supported devices, including a wide range of target microcontrollers. The list of supported manufacturers, families and devices, and SoCs provides a detailed overview.

Future-proofing included

The software package can be downloaded free of charge, and it includes future software and firmware updates as well as all new flash loaders for target devices added in the future.

Customer support

Every Flasher comes with one year of Initial Coverage & Warranty, providing hardware warranty and support. At the time of purchase, Coverage & Warranty can be extended to a total period of 3 or 5 years.

To extend coverage beyond the inital period, Extended Coverage & Warranty can be purchased.

Please note: Support is available for registered products only.

Organizations with a larger number of SEGGER hardware products may benefit from Company Support. This allows engineers to receive technical assistance regardless of the coverage status of their individual devices.

Product images

Alt text: An angled view of a gray and blue device labeled "Fltasher Pro," featuring a USB-C port, an Ethernet port with indicator lights, and a D-sub connector. The device has a textured rubber edge for grip. — Flasher Pro host connector

Flasher Pro front

A gray and blue SEGGER Flasher Pro device is shown, featuring status indicators for "Ready," "Not ready," and "Fail," along with a button labeled "PROG." The device has a connector with golden pins on one side. — Flasher Pro target connector

Technical specifications

Specifications
Power supply	USB powered, maximum 143.2 mA (idle)
USB host interface	USB 2.0 (high-Speed); USB-C
Target interface	Male 20-pin IDC keyed box header with 0.1" pitch (2.54 mm); optional adapters available
Supported target interfaces	SPI, QSPI, 8051 C2, cJTAG, FINE, ICSP, IIC, ISP, JTAG, PDI, SPD, SWD, SWIM, UART, UPDI
Internal flash memory	128 MB (TBW: 10 TB)
Max. target cable length	Recommended (delivered): 20 cm (8") Max. 2 m (6.5") allowed but might reduce max. target-interface speed.
Serial transfer rate between Flasher Pro and target	Dependent on target interface; JTAG/SWD: 50 MHz
Supported target voltage	1.2 - 5 V
Current drawn from target voltage sense pin (VT_Ref)	< 25 µA
Target supply voltage	1,5 - 5 V
Target supply current	Max. 400 mA
Reset type	Open drain with 100 Ohms series resistor. Can be pulled low or tristated
Operating temperature	+ 5 °C ... + 60 °C
Storage temperature	- 20 °C ... + 65 °C
Relative humidity (non-condensing)	< 90 % rH
Size (without cables)	130 mm x 70 mm x 28 mm
Weight (without cables)	126 g
Supported OS	Microsoft Windows (x86-64, Arm64), Linux (x86-64, Arm64), macOS (x86-64, Apple Silicon)

Assembly dimensions

Installing programmers into fixtures has become quite common. To ease preparation, the 3D data of the Flasher housing is available below.

Housing STEP data

Package content

Flasher Pro

USB cable

SEGGER Flasher PRO - Gray Cable Ribbon 20 pin shadow

20-pin, 0.1" target ribbon cable

Accessories

Four separate clamp blocks on the left, two mounting clips mounted to a Flasher on the right

SEGGER's mounting brackets provide a reliable solution for securely fastening Flasher in-circuit programmers. Designed for stability and ease of use, these brackets ensure an organized and professional setup. Mounting brackets are available directly from the SEGGER shop.

Alternatively, SEGGER offers users the option to 3D print mounting brackets themselves. A downloadable ZIP file is provided, containing a STEP file for modifications, an STL file ready for 3D printing, and a PDF file with detailed dimensions.

FAQ

Can the Flasher supply power to the target?

Yes. All Flasher models feature a variable target power supply that provides the target with the required voltage directly through the target interface.

What is the maximum voltage that can be handled by the galvanic isolation of the Ethernet interface?

The Ethernet data lines are galvanically isolated in accordance with IEEE 802.3, tested at 1500 Vrms for one minute.
This isolation applies only to the data lines, not to the Ethernet shield, which has a direct electrical connection to the USB shield and a resistive and capacitive coupling to probe ground (GND).
For effective galvanic isolation, an unshielded twisted pair (UTP) Ethernet cable should be used.

Which flash memory types does the Flasher Pro support?

The Flasher Pro supports internal flash memory on microcontrollers as well as external flash types, including QSPI, SPI, and CFI NOR flash. It handles virtually any in-system programming (ISP) task for embedded systems.

Can I limit the number of times a firmware image is flashed?

Yes. Using the Authorized Flashing feature, you can set a secure limit on the number of programming cycles. This prevents overproduction and contract manufacturing theft by ensuring the firmware flash tool stops working once the authorized limit is reached.

Does it support Linux and macOS?

Yes. The Flasher Pro is a cross-platform tool. The configuration software and command-line utilities run natively on Windows, Linux, and macOS.

What happens if my specific chip isn't listed?

The Flasher Pro supports tens of thousands of devices. If yours isn't listed, you can often add support yourself using the Flasher SDK, or you can contact SEGGER support to request a new flash loader.