FEATURES
GENERAL DESCRIPTION
The DS1216 SmartWatch RAM and SmartWatch ROM sockets are 600-mil-wide DIP sockets with a built-in CMOS watch function, an NV RAM controller circuit, and an embedded lithium energy
source. The sockets provide an NV RAM solution for memory sized from 2K x 8 to 512K x 8 with
package sizes from 26 pins to 32 pins. When a socket is mated with a CMOS SRAM, it provides a
complete solution to problems associated with memory volatility and uses a common energy source to maintain time and date.
FEATURES
Keeps Track of Hundredths of Seconds, Seconds, Minutes, Hours, Days, Date of the Month, Months, and Years
Converts Standard 2K x 8 Up to 512K x 8 CMOS Static RAMs into Nonvolatile Memory
Embedded Lithium Energy Cell Maintains Watch Information and Retains RAM Data
Watch Function is Transparent to RAM Operation
Automatic Leap Year Compensation Valid Up to 2100
Lithium Energy Source is Electrically Disconnected to Retain Freshness Until Power is Applied for the First Time
Proven Gas-Tight Socket Contacts
Full ±10% Operating Range
Accuracy Better Than ±1 Minute/Month at +25°C
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