
Dallas Semiconductor -> Maxim Integrated
FEATURES
Real time clock counts seconds, minutes, hours, date of the month, month, day of the week, and year with leap year compensation valid up to 2100
96-byte nonvolatile RAM for data storage
Two Time of Day Alarms - programmable on combination of seconds, minutes, hours, and day of the week
1 Hz and 32.768 kHz clock outputs
Serial interface supports Motorola Serial Peripheral Interface (SPI) serial data ports or standard 3-wire interface
Burst Mode for reading/writing successive addresses in clock/RAM
Dual power supply pins for primary and backup power supplies
Optional trickle charge output to backup supply
2.0 - 5.5V operation
Optional industrial temperature range -40°C to +85°C
Available in space-efficient 20-pin TSSOP package
Recognized by Underwriters Laboratory