ISL6296A

Description

The ISL6296A is a highly cost-effective fixed-secret hash engine based on Intersils FlexiHash technology. The devices authentication is achieved through a challenge response scheme, which is customized for low-cost applications where cloning via eavesdropping without knowledge of the devices secret code is not economically viable. When used for its intended applications, the ISL6296A offers the same level of effectiveness as other significantly more expensive high maintenance monetarygrade hash algorithm and authentication schemes. The ISL6296A has a wide operating voltage range and is suitable for direct powering from a 1-cell Li-Ion/Li-Poly or a 3-cell series NiMH battery pack. The ISL6296A can also be powered by the XSD bus when the bus pull-up voltage is 3.3V or higher. The device connects directly to the cell terminals of a battery pack and includes on-chip voltage regulation circuit, POR and a non-crystal based oscillator for bus timing reference. Communication with the host is achieved through a single-wire XSD interface (a light-weight subset of Intersils ISD bus interface). The XSD bus is compatible for use with serial ports offered by all 8250 compatible UARTs or a single GPIO (General Purpose Input and Output) pin of a microprocessor. A clone prevention solution utilizing the ISL6296A offers safety and revenue protection at the lowest cost and power and is suitable for protection against after-market replacement for a wide variety of low-cost applications.