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| Part Number | M41ST87WMX6TR | M41ST87YMX6TR | M41ST85WMX6TR |
|---|---|---|---|
| Manufacturer | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Product Status | Active | Obsolete | Active |
| Type | Clock/Calendar | Clock/Calendar | Clock/Calendar |
| Features | Alarm, Leap Year, NVSRAM, Square Wave Output, Supervisor, Watchdog Timer | Alarm, Leap Year, NVSRAM, Square Wave Output, Supervisor, Watchdog Timer | Alarm, Leap Year, NVSRAM, Square Wave Output, Supervisor, Watchdog Timer |
| Memory Size | 128B | 128B | 44B |
| Time Format | HH:MM:SS:hh (24 hr) | HH:MM:SS:hh (24 hr) | HH:MM:SS:hh (24 hr) |
| Date Format | YY-MM-DD-dd | YY-MM-DD-dd | YY-MM-DD-dd |
| Interface | I²C, 2-Wire Serial | I²C, 2-Wire Serial | I²C, 2-Wire Serial |
| Voltage - Supply | 2.7V ~ 3.6V | 4.5V ~ 5.5V | 2.7V ~ 3.6V |
| Voltage - Supply, Battery | 2.5V ~ 3.6V | 2.5V ~ 5.5V | 2.5V ~ 3.5V |
| Current - Timekeeping (Max) | 0.5mA @ 2.7V ~ 3.6V | 1mA @ 4.5V ~ 5.5V | 0.5mA @ 2.7V ~ 3.6V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 28-SOIC (0.295", 7.50mm Width) | 28-SOIC (0.295", 7.50mm Width) | 28-SOIC (0.295", 7.50mm Width) |
| Supplier Device Package | 28-SO | 28-SO | 28-SO |
