Maxim Integrated DS1685S-5

Description
The DS1685/DS1687 are real-time clocks (RTCs) that incorporate the industry-standard DS1287 RTC clock with enhanced features. These RTCs are Y2K compliant and can operate at either 3V or 5V. They feature a 64-bit silicon serial number, power-control circuitry that supports system power-on from date/time alarm or key closure, a 32kHz output for power management, and a crystal-select bit that allows the RTC to operate with either a 6pF or 12.5pF crystal. The DS1685/DS1687 also have a SMI recovery stack and 242 bytes of battery-backed NV RAM.

Features
Incorporates industry-standard DS1287 RTC clock plus enhanced features
Y2K compliant
3V or 5V operation
64-bit silicon serial number
Power-control circuitry supports system power-on from date/time alarm or key closure
32kHz output for power management
Crystal-select bit allows RTC to operate with either 6pF or 12.5pF crystal
SMI recovery stack
242 bytes of battery-backed NV RAM

Applications
Embedded systems
Utility meters
Security systems
Network hubs, bridges, and routers