![]() The DS17287, DS17487, and DS17887 (hereafter referred to as the DS17x87) integrate a quartz crystal and lithium energy source into a 24-pin encapsulated DIP package. The DS17x85 also incorporates a number of enhanced functions including a silicon serial number, power-on/off control circuitry, and 2K, 4K, or 8Kbytes of battery-backed NV SRAM. The DS17285, DS17485, and DS17885 (hereafter referred to as the DS17x85) provide a real-time clock/calendar, one time-of-day alarm, three maskable interrupts with a common interrupt output, a programmable square wave, and 114 bytes of battery-backed NV SRAM. Optional Industrial Temperature Range Available.Optional Encapsulated DIP (EDIP) Package with Integrated Crystal and Battery (DS17287, DS17487, DS17887). ![]() Automatic Power-Fail Detect and Switch Circuitry.Time-of-Day Alarm Once per Second to Once per Day.Interrupt Output with Six Independently Maskable Interrupt Flags.114 Bytes of General-Purpose, Battery-Backed NV SRAM.12-Hour or 24-Hour Clock with AM and PM in 12-Hour Mode. ![]()
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