Scaleo brings functional safety to the chip level - up to ASIL D

September 05, 2012 // By Christoph Hammerschmidt
Fabless automotive semiconductor vendor Scaleo chip has a superset of innovative technologies offering ISO 26262 compliant ASIL D system design without compromise in performance. Under the brand name SILant, these technologies will be first available in OLEA, Scaleo chip’s new family of microcontrollers optimized for powertrain systems.

The predominance of electric/electronic in cars is increasing over year, mainly driven by powertrain renewal to follow-up international pollutant emission and consumption reduction objectives, as well as customers' expectations in advanced comfort features and driver assistance systems. Today, average electronic value represents 30% of a car production cost and is predicted to rise to 50% by 2020. Electronic functions including powertrain gain in sophistication and, consequently, in faults exposure. Critical embedded electric/electronics systems and embedded software have to rely on functional safety for malfunction protections. With the international standard ISO 26262, the automotive industry has settled guidance to lower these risks. Contributor to the overall system safety, Scaleo chip has developed the SILant technology.

SILant is a set of safety features embedded into Scaleo chip’s microcontroller products to ensure system integrity at both hardware and software level. Built around a multi-core architecture, SILant incorporates three patented highly efficient hardware safety mechanisms: the Asynchronous LockStep (ALS), the Execution Flow Control (EFC) and the Events Sequence Control (ESC), surrounded by an entire safety infrastructure and a safety management unit that offers the most complete faults detection and management panel.

ESC & EFC provide early faults detection coupled to a high precision faults isolation allowing fast reaction time. The ALS cores architecture supports the segregation of safety / non-safety functions, authorizing the co- existence within the same MCU of applications that require different level of attention, from ASIL-D level to uncritical level.

SILant benefits from the unique asynchronous multi-core architecture to offer the highest safety integrity level without performances degradation. State of the art’s limitations are history; the support of efficient and safe advanced powertrain system is enabled in full respect of the application need at any time.

Safety software code is simplified, the design cycle is reduced. SILant based products are scalable. Customer leverage previous certified safety implementation in future ECUs generation. Cost reduction is induced saving needs for demonstrating again the