Specification
| Base Part Number | DS1644 |
| Features | Leap Year,NVSRAM |
| Type | Clock/Calendar |
| Mounting Type | Through Hole |
| Voltage Supply | 4.5 V ~ 5.5 V |
| Time Format | HHMMSS (24 hr) |
| Supplier Device Package | 28-EDIP |
| Part Status | Obsolete |
| Packaging | Tube |
| Package Case | 28-DIP Module (0.600",15.24mm) |
| Operating Temperature | 0 deg C ~ 70 deg C |
| Memory Size | 32KB |
| Interface | Parallel |
| Date Format | YY-MM-DD-dd |
| Current Timekeeping Max | 4mA @ 4.5V ~ 5.5V |
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