Software libraries for consumer functional safety requirements
23 October 2013
Design Automation
In support of its SafeTI platform, Texas Instruments has released new UL-certified software packages to simplify the design of functional safety consumer applications using C2000 real-time control microcontrollers (MCUs).
The software is UL-certified, as recognised components, to the UL 1998:2008 Class 1 standard, and is compliant with IEC 60730-1:2010 Class B, both of which include home appliances, arc detectors, power converters, power tools, e-bikes and many others. Because of the similarity of the two standards, the IEC 60730 software libraries can also help assist customers developing consumer applications compliant with the IEC 60335-1:2010 standard.
The software packages include ready-to-run, simple application examples which can be downloaded from the SafeTI software folder, along with supporting safety manuals and user guides. The software library allows for embedding a variety of system tests required by IEC 60730 and UL 1998, which are described in the supporting safety manual.
Projects built with the software library demonstrate how to create power-on self-test (POST) and periodic self-test (PST) with reporting conducted through a UART peripheral connection. The user’s guide demonstrates how to integrate the testing into functional safety consumer application designs.
The C2000 MCUs include a special hardware element – parallel signature analysis (PSA) – that allows for a 40-bit cyclic redundancy check (CRC) of the data bus on a cycle-by-cycle basis for additional safety without affecting the main CPU or software application.
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