DS17485 PDF File ( Datasheet )

DS17485, DS17487 3V, 5V Real-Time Clock www.maxim-ic.com FEATURES Incorporates industry standard DS1287 PC clock plus enhanced features: § Y2K compliant § +3V or +5V operation § SMI recovery stack § 64-bit silicon serial number § Power-control circuitry supports system power-on from date, time alarm or key closure § 32kH- output on power-up § Crystal select bit allows RTC to operate with 6pF or 12.5pF crystal § 114 bytes user NV RAM § Auxiliary battery input § 4kB additional NV RAM §