| Part Number | M48T37Y-70MH1E | M48T37Y-70MH6E | 
|---|---|---|
| Manufacturer | STMicroelectronics | STMicroelectronics | 
| Category | Clock/Timing - Real Time Clocks | Clock/Timing - Real Time Clocks | 
|   |   | |
| Product Status | Obsolete | Obsolete | 
| Type | Clock/Calendar | Clock/Calendar | 
| Features | Alarm, Leap Year, Watchdog Timer | Alarm, Leap Year, Watchdog Timer | 
| Memory Size | - | - | 
| Time Format | HH:MM:SS (24 hr) | HH:MM:SS (24 hr) | 
| Date Format | YY-MM-DD-dd | YY-MM-DD-dd | 
| Interface | Parallel | Parallel | 
| Voltage - Supply | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 
| Voltage - Supply, Battery | - | - | 
| Current - Timekeeping (Max) | 3mA @ 4.5V ~ 5.5V | 3mA @ 4.5V ~ 5.5V | 
| Operating Temperature | 0°C ~ 70°C | -40°C ~ 85°C | 
| Mounting Type | Surface Mount | Surface Mount | 
| Package / Case | 44-BSOP (0.337", 8.56mm Width) requires SNAPHAT | 44-BSOP (0.337", 8.56mm Width) requires SNAPHAT | 
| Supplier Device Package | 44-SOH | 44-SOH |