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| Mount | Surface Mount |
| Mounting Type | Surface Mount |
| Package / Case | 28-SOP (0.350, 8.89mm Width) with SNAPHAT Sockets |
| Number of Pins | 28 |
| Operating Temperature | -40°C~85°C |
| Packaging | Tube |
| JESD-609 Code | e3 |
| Feature | Alarm, Leap Year, NVSRAM, Square Wave Output, Supervisor, Watchdog Timer |
| Part Status | Obsolete |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) |
| Number of Terminations | 28 |
| ECCN Code | EAR99 |
| Type | Clock/Calendar |
| Terminal Finish | MATTE TIN |
| HTS Code | 8542.39.00.01 |
| Voltage - Supply | 2.7V~3.6V |
| Terminal Position | DUAL |
| Peak Reflow Temperature (Cel) | 260 |
| Supply Voltage | 3V |
| Terminal Pitch | 1.27mm |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| Base Part Number | M41ST |
| Pin Count | 28 |
| Operating Supply Voltage | 3.3V |
| Interface | I2C, 2-Wire Serial |
| Memory Size | 44B |
| Clock Frequency | 0.032MHz |
| Logic Function | Clock |
| Number of Timers | 1 |
| Time Format | HH:MM:SS:hh (24 hr) |
| Non-Volatile Memory | 64 B |
| Date Format | YY-MM-DD-dd |
| Current - Timekeeping (Max) | 0.5mA @ 2.7V~3.6V |
| Time-Min | 1/100SECOND |
| Interrupt Capability | Y |
| Voltage - Supply, Battery | 2.5V~3.5V |
| Information Access Method | I2C |
| Height | 2.69mm |
| Length | 18.49mm |
| Width | 8.89mm |
| Radiation Hardening | No |
| RoHS Status | Non-RoHS Compliant |
| Lead Free | Lead Free |