MCU documentation package from ST facilitates ISO 26262 certification

August 04, 2015 // By Graham Prophet
STMicroelectronics has published a safety manual and Failure Modes, Effects, and Diagnostic Analysis (FMEDA) document that together help streamline ISO 26262 functional-safety certification up to ASIL-B for systems containing its STM8AF automotive microcontrollers.

With features including CAN and LIN drivers, touch-sense/LCD-control capability, ST’s AEC-Q100 qualified STM8AF series is a suitable choice for body and infotainment applications such as seat adjusters, instrumentation, and lighting controllers. Tier 1 equipment suppliers now tend to design these systems to meet ISO 26262 functional-safety standards at ASIL A or B. ST’s STM8A-SafeASIL safety tools show designers how best to work with the microcontroller to achieve the desired safety integrity level, thereby helping ensure successful certification.

The safety manual has been developed with assistance from Italian company  Yogitech,

specialist in providing functional safety solutions. It provides guidance for hardware design and software integration, including a list of tips, to help engineers ensure correct and safe operation of the STM8AF and so eliminate system failures due to the microcontroller.

The accompanying FMEDA describes the failure probabilities of STM8 IP blocks to help designers ensure their applications achieve the desired system safety integrity.

This safety documentation package is, ST claims, the first in the industry for 8-bit microcontrollers. The safety manual is available immediately to STM8A customers, free of charge, at while the FMEDA, also free of charge, is available conditional upon signing a Non-Disclosure Agreement (NDA).