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    | Type | Description | 
|---|---|
| rohs: | RoHS | 
| type: | Portable System Controller | 
| features: | Alarm, Leap Year, Watchdog Timer | 
| interface: | 3-Wire Serial | 
| date format: | YY-MM-DD-dd | 
| memory size: | - | 
| part status: | Obsolete | 
| time format: | HH:MM:SS (12/24 hr) | 
| mounting type: | Surface Mount | 
| package / case: | 20-TSSOP (0.173", 4.40mm Width) | 
| voltage - supply: | 4.5V ~ 5.5V | 
| operating temperature: | 0°C ~ 70°C | 
| supplier device package: | 20-TSSOP | 
| voltage - supply, battery: | 2.5V ~ 3.7V | 
| current - timekeeping (max): | 300μA @ 5V |