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Secure supervisor chip meets PCI-PED requirements

Posted: 03 Sep 2007 ?? ?Print Version ?Bookmark and Share

Keywords:supervisor chip? PCI-PED requirements? secure battery-backup controller?

Maxim Integrated Products has introduced the DS3650 SPI-compatible secure battery-backup controller and supervisor with temperature and voltage monitoring. Specifically designed to meet the stringent requirements of the payment card industry-PIN entry device (PCI-PED) certification, the new device integrates a battery-backup controller, system power monitor, CPU supervisor, temperature sensor and two tamper-detection comparators. The high integration and advanced security features of the device make it suitable for POS terminals, PIN pads and other equipment where data protection and security is critical.

The DS3650 provides two tamper-detection comparator inputs to interface with, and provide low-power continuous monitoring of, resistive antitamper meshes, external sensors and digital interlocks. This secure supervisor constantly monitors primary power. In the event of failure, it automatically switches to an external battery power source to keep the device and external circuitry alive. The DS3650 also constantly monitors battery voltage and initiates a tamper response when the battery voltage becomes abnormal.

To facilitate recovery analysis after a tamper event occurs, an elapsed-time seconds counter freezes the value of a free-running 32bit counter. Additionally, a user-programmable, internal digital temperature sensor provides a tamper response in the event of a thermal attack and freezes temperature and voltage values for recovery analysis.

Packaged in a Pb-free, 4mm x 4mm, 16-ball CSBGA for added security, the DS3650 is fully specified over the -40C to 85C extended temperature range. For tracing purposes, each device is inscribed with a unique 4bit serial number. Due to the secure nature of this product, please contact the factory for the data sheet and pricing.

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