DS1340 Description
The DS1340 is a real-time clock (RTC)/calendar that is pin patible and functionally equivalent to the ST M41T00, including the software clock calibration. The device additionally provides trickle-charge capability on the VBACKUP pin, a lower timekeeping voltage, and an oscillator STOP flag. Block access of the register map is identical to the ST device.
DS1340 Key Features
- Enhanced Second Source for the ST M41T00
- pletely Manages All Timekeeping Functions
- RTC Counts Seconds, Minutes, Hours, Day, Date, Month, and Year
- Software Clock Calibration
- Oscillator Stop Flag
- Low-Power Operation Extends Battery Backup Run
- Low Timekeeping Voltage Down to 1.3V
- Automatic Power-Fail Detect and Switch Circuitry
- Trickle-Charge Capability
- Three Operating Voltage Ranges (1.8V, 3V, and 3.3V)