| Part Number | DS1643P |
| Manufacturer | Maxim Integrated (https://www.analog.com/) Products |
| Title | Nonvolatile Timekeeping RAMs |
| Description | PDIP 1 2 3 4 5 6 7 8 9 10 21 23 24 25 11 12 13 15 16 17 18 19 20 22 26 27 28 — 14 — PIN PowerCap 1, 2, 3, 31–34 30 25 24 23 22 21 20 19 18 28 29 2... |
| 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 Reside in the Eight Top RAM Locations. Totally Nonvolatile with Over ... |
| Datasheet |
 DS1643P Datasheet
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