Full PDF Text Transcription for DS1644LPM (Reference)
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DS1644LPM DS1644LPM Nonvolatile Timekeeping RAM FEATURES • Upward compatible with the DS1643AL Timekeeping RAM to achieve higher RAM density • Integrated NV SRAM, real ti...
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eeping RAM to achieve higher RAM density • Integrated NV SRAM, real time clock, crystal, power– fail control circuit and lithium energy source • Low profile socketable module – 255 mil package height • Clock registers are accessed identical to the static RAM. These registers are resident in the eight top RAM locations.