DS1339B Description
The DS1339B serial real-time clock (RTC) is a lowpower clock/date device with two programmable timeof-day alarms and a programmable square-wave output. Address and data are transferred serially through an I2C bus. The clock/date provides seconds, minutes, hours, day, date, month, and year information.
DS1339B Key Features
- Drop-In Replacement for DS1339 -- Supports High-ESR Crystals Up to 100kΩ to Allow
- Real-Time Clock Counts Seconds, Minutes, Hours, Date of the Month, Month, Day of the Week, and Year with Leap-Year pensa
- Two Time-of-Day Alarms
- Programmable Square-Wave Output Signal -- Low-Power Operation Extends Battery Backup Run Time
- Automatic Power-Fail Detect and Switch Circuitry -- Simple Serial Port Interfaces to Most Microcontrollers
- I2C Serial Interface -- Underwriters Laboratories (UL®) Recognized