Features
• Challenge-response based authentication scheme using
32-Bit challenge code and 8-Bit authentication code.
• Fast and flexible authentication process. Multi-pass
authentication can be used to achieve the highest security
level if necessary.
• 16x8 OTP ROM stores up to three sets of 32-Bit
host-selectable secrets with additional programmable
memory for storage of up to 48-Bits of ID code and/or pack
information.
• FlexiHash+ engine uses two sets of 32-Bit secrets for
authentication code generation.
• Non-unique mapping of the secret key to an 8-Bit
authentication code maximizes hacking difficulty due to
need for exhaustive key search (superior to SHA-1).
• Supports 1-cell Li-Ion/Li-Poly and 3-cell series NiMH
battery packs (2.6V ~ 4.8V operation), or powered by the
XSD bus.
• XSD single-wire host bus interface communicates with all
8250-compatible UART’s or a single GPIO. Supports CRC
on read data and transfer bit-rate up to 23kbps.
• True “Zero Power” Sleep mode - automatically entered
after a bus inactivity time-out period
• 5 Ld SOT-23 or 8 Ld TDFN (2mm x 3mm) packages
• -20°C to +85°C operating temperature range
• Pb-free plus anneal available (RoHS compliant)
Applications
• Battery Pack Authentication
• Printer Cartridges
• Add-on Accessories
• Other Non-Monetary Authentication Applications