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Injection current in Freescale automotive MCUs

Posted: 18 Sep 2013 ?? ?Print Version ?Bookmark and Share

Keywords:CodeWarrior? Eclipse? Microcontroller? legacy? IDE?

Freescale Semiconductor produces a number of microcontrollers (MCUs) specifically for the automotive market. Automotive MCUs are designed with the following characteristics:
???Wafer process technology from 350nm (nm) down to 90 nm1
???Target many different end uses, such as powertrain engine controllers, body controllers, chassis controllers, safety controllers, and cluster/infotainment
???Overall MCU performance8bit, 16bit, and 32bit
???Wide range of price targets, from low cost minimal feature set to higher cost, high performance MCUs

All of these factors have an impact on the allowable injection currents that a device can withstand without causing any longterm effect on the device lifetime. In general, injection current that induces a voltage on the internal structures higher than the operating voltage of the device can degrade the lifetime of the transistors and other internal circuitry. However, all of these conditions are taken into account and are covered by the design of each MCU to ensure proper device lifetime.

View the PDF document for more information.

Originally published by Freescale Semiconductor Inc. at as "Understanding Injection Current on Freescale Automotive Microcontrollers".

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