DS3232集成电路（IC）的实时时钟规格书PDF中文资料

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