DS1341,DS1342低电流I2C RTC

The DS1341/DS1342 low-current real-time clocks (RTCs)are timekeeping devices that provide an extremely lowstandby current, which permits longer life from a powersupply. The DS1341/DS1342 support high-ESR crystals,which broaden the pool of usable crystals for the devices.The DS1341 uses a 6pF crystal, while the DS1342 uses a12.5pF crystal. These devices are accessed through anI2C serial interface. Other features include two time-of-dayalarms, two interrupt outputs, a programmable squarewaveoutput, and a serial bus timeout mechanism.