DS1743P-85+

实时时钟 Timekeeping NV RAM

* Integrated NV SRAM, Real-Time Clock, Crystal, Power-Fail Control Circuit, and Lithium Energy Source * Clock Registers are Accessed Identically to the Static RAM. These Registers Reside in the Eight Top RAM Locations. * Century Byte Register * Totally Nonvolatile with Over 10 Years of Operation in the Absence of Power * BCD-Coded Century, Year, Month, Date, Day, Hours, Minutes, and Seconds with Automatic Leap Year Compensation Valid through 2099 * Low-Battery-Voltage Level Indicator Flag * Power-Fail Write Protection Allows for ±10% VCC Power-Supply Tolerance * Lithium Energy Source is Electrically Disconnected to Retain Freshness Until Power is Applied for the First Time * DIP Module Only * Standard JEDEC Bytewide 8k x 8 Static RAM Pinout * PowerCap Module Board Only * Surface-Mountable Package for Direct Connection to PowerCap Containing Battery and Crystal * Replaceable Battery PowerCap * Power-On Reset Output * Pin-for-Pin Compatible with Other Densities of DS174XP Timekeeping RAM