General Description

?The DS3232 is a low-cost temperature-compensated crystal oscillator (TCXO) with a very accurate, temperature-compensated, integrated real-time clock (RTC) and 236 bytes of battery-backed SRAM. Additionally, the DS3232 incorporates a battery input and maintains accurate timekeeping when main power to the device is interrupted. The integration of the crystal resonator enhances the long-term accuracy of the device as well as reduces the piece-part count in a manufacturing line. The DS3232 is available in commercial and industrial temperature

?ranges, and is offered in an industry-standard 20-pin, 300-mil SO package.

Features

? Accuracy ±2ppm from 0°C to +40°C

? Accuracy ±3.5ppm from -40°C to +85°C

? Battery Backup Input for Continuous Timekeeping

? Operating Temperature Ranges

?? Commercial: 0°C to +70°C

?? Industrial: -40°C to +85°C

? 236 Bytes of Battery-Backed SRAM

? Low-Power Consumption

? Real-Time Clock Counts Seconds, Minutes, Hours, Day, Date, Month, and Year with Leap Year Compensation Valid Up to 2099

? Two Time-of-Day Alarms

? Programmable Square-Wave Output

? Fast (400kHz) I2C Interface

? 3.3V Operation

? Digital Temp Sensor Output: ±3°C Accuracy

? Register for Aging Trim

? RSTInput/Output

? 300-Mil, 20-Pin SO Package

? Underwriters Laboratories (UL?) Recognized

Applications

?Servers

?Utility Power Meters

?Telematics

?GPS