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Home Semiconductor News

SEGGER J-Link software update saves enough to power 50 German homes

Semiconductor For You by Semiconductor For You
December 16, 2022
in Semiconductor News
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Monheim am Rhein, Germany – December 16th, 2022

With the latest software update, SEGGER has further reduced the power consumption of its J-Link line of debug probes, introducing Standby and Eco modes.

Standby mode does not affect J Link’s legendary performance and requires nothing more than installing the latest software, which can be downloaded free of charge. For further power saving, Eco mode can be activated by the user.

The savings in the new Standby mode, which is entered automatically when a period of inactivity is detected, were achieved using a combination of methods.

In Standby mode, internal clock frequencies are reduced and LEDs are dimmed. Energy savings in operation are achieved using embOS-Ultra, which does not use a periodic tick interrupt, reducing CPU load.

The newly introduced Eco mode can be enabled by the user using the J-Link configurator. Eco mode reduces the amount of energy the J-Link uses while in operation, dimming LEDs and reducing clock frequencies as in Standby mode. The associated small reduction in performance is usually unnoticeable.

All J-Links are USB powered and have always used very little power – less than 1W. With the new standby mode update, the power consumption during periods of inactivity is cut approximately in half, i.e. down to less than 0.5W. Assuming that a debug probe on a developer’s desk is typically idle 80% of the time, in a 10-hour day this brings consumption down from 10Wh to 6Wh. With an 80% efficient power supply, Standby mode can save 5Wh per J-Link per day; with 100,000 J-Links in daily use, this update saves 500kWh per day, more electricity than used by 50 average German homes!

“While we make sure our products offer high performance, we also strive to be as energy efficient as possible,” says Ivo Geilenbruegge, Managing Director at SEGGER. “Whether it is the energy consumption of the company’s buildings or its products, less is better and greener is better. This software update is an excellent example of SEGGER’s approach to environmental friendliness. Making embedded systems more efficient saves energy, helps the planet, and is simply the right thing to do!”

SEGGER has always been focused on minimizing the power usage of its products — both hardware and software. No SEGGER product uses a fan, yet many of its products use less power in total than the fan alone uses in some competing products. And SEGGER’s embedded software helps make its customer’s products more energy efficient as well. For example, by simply switching to embOS-Ultra, which is 100% compatible with the classic embOS (RTOS), any project can save energy without having to modify a single line of the end application.

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