| DS1554 Description | | 256k Nonvolatile, Y2K-Compliant Timekeeping RAM | | DS1554 Vendor | | Maxim | | DS1554 Categories | | | DS1554 Features | | Integrated NV SRAM, Real-Time Clock (RTC), Crystal, Power-Fail Control Circuit, Lithium Energy Source Clock Registers are Accessed Identically to the Static RAM; These Registers Reside in the 16 Top RAM Locations Century Byte Register (i.e., Y2K Compliant) Totally Nonvolatile with Over 10 Years of Operation in the Absence of Power Precision Power-On Reset Programmable Watchdog Timer and RTC Alarm BCD-Coded Year, Month, Date, Day, Hours, minutes, and Seconds with Automatic Leap- Year Compensation Valid Up to the Year 2100 Battery Voltage-Level Indicator Flag Power-Fail Write Protection Allows for ±10% VCCPower-Supply Tolerance Lithium Energy Source is Electrically Disconnected to Retain Freshness Until Power is Applied for the First Time Also Available in Industrial Temperature Range: -40°C to +85°C | | DS1554 Datasheet and Application Notes | | | Parameter | Value | | Special Functions | Watchdog Timekeeper | | Time Format (hh = 1/100 sec) | HH:MM:SS | | Date Format | YYYY-MM-DD | | Bus Type | Bytewide | | Op. Temp Range | -40° to +85° | | Op. Temp Range | 0° to +70° | | Supply Voltage (V) | 3.3 | | Supply Voltage (V) | 5 | | NV RAM (Bytes) | 32k | | Package | 32/EDIP.740a | | Package | 34/PwrCap | | Price @ 1k | $17.74 |
|