| DS1646 Features | - 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 are resident in the eight top RAM locations.
- Totally nonvolatile with over 10 years of operation in the absence of power
- BCD coded year, month, date, day, hours, minutes, and seconds with leap year compensation valid up to 2100
- Power-fail write protection allows for ±10% VCCpower supply tolerance
- DS1646 only (DIP Module)
? Standard JEDEC bytewide 128k x 8 RAM pinout - DS1646P only (PowerCap® Module Board)
? Surface mountable package for direct connection to PowerCap containing battery and crystal
? Replaceable battery (PowerCap)
? Power-fail output
? Pin-for-pin compatible with other densities of DS164XP Timekeeping RAM
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