| Part Number | M41T83RMY6F | M41T83ZMY6F | 
|---|---|---|
| Manufacturer | STMicroelectronics | STMicroelectronics | 
| Category | Clock/Timing - Real Time Clocks | Clock/Timing - Real Time Clocks | 
|   |   | |
| Product Status | Active | Active | 
| Type | Clock/Calendar | Clock/Calendar | 
| Features | Alarm, Leap Year, Square Wave Output, SRAM, Watchdog Timer | Alarm, Leap Year, Square Wave Output, SRAM, Watchdog Timer | 
| Memory Size | 7B | 7B | 
| Time Format | HH:MM:SS:hh (24 hr) | HH:MM:SS:hh (24 hr) | 
| Date Format | YY-MM-DD-dd | YY-MM-DD-dd | 
| Interface | I²C, 2-Wire Serial | I²C, 2-Wire Serial | 
| Voltage - Supply | 2.7V ~ 5.5V | 2.38V ~ 5.5V | 
| Voltage - Supply, Battery | 2V ~ 5.5V | 2V ~ 5.5V | 
| Current - Timekeeping (Max) | 10µA @ 5.5V | 10µA @ 5.5V | 
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | 
| Mounting Type | Surface Mount | Surface Mount | 
| Package / Case | 18-SOX, 18-SOIC with Crystal (7.5mm Width) | 18-SOX, 18-SOIC with Crystal (7.5mm Width) | 
| Supplier Device Package | 18-SOX | 18-SOX |