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DS3232S#

製品説明
仕様・特性

EVALUATION KIT AVAILABLE DS3232 Extremely Accurate I2C RTC with Integrated Crystal and SRAM General Description Features 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. ♦ 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 ♦ RST Input/Output ♦ 300-Mil, 20-Pin SO Package ♦ Underwriters Laboratories Recognized The RTC maintains seconds, minutes, hours, day, date, month, and year information. The date at the end of the month is automatically adjusted for months with fewer than 31 days, including corrections for leap year. The clock operates in either the 24-hour or 12-hour format with an AM/PM indicator. Two programmable time-ofday alarms and a programmable square-wave output are provided. Address and data are transferred serially through an I2C bidirectional bus. A precision temperature-compensated voltage reference and comparator circuit monitors the status of VCC to detect power failures, to provide a reset output, and to automatically switch to the backup supply when necessary. Additionally, the RST pin is monitored as a pushbutton input for generating a µP reset. Ordering Information PART DS3232S# DS3232SN# Applications Functional Diagrams Utility Power Meters Servers Telematics GPS TEMP RANGE 0°C to +70°C 20 SO DS3232 20 SO DS3232N #Denotes a RoHS-compliant device that may include lead that is exempt under the RoHS requirements. Lead finish is JESD97 Category e3, and is compatible with both lead-based and lead-free soldering processes. A "#" anywhere on the top mark denotes a RoHS-compliant device. N.C. 1 RPU RPU PUSHBUTTON RESET N.C. N.C. N.C. N.C. N.C. N.C. 18 SCL INT/SQW VCC 4 32kHz VBAT SCL SDA RST SCL SDA RST 19 N.C. 32kHz 3 VCC 20 SCL N.C. 2 VCC μP Pin Configuration TOP VIEW VCC VCC INT/SQW 5 17 SDA DS3232 16 VBAT RST 6 DS3232 GND TOP MARK -40°C to +85°C Typical Operating Circuit RPU = tR / CB PINPACKAGE N.C. N.C. N.C. N.C. N.C. Pin Configurations appear at end of data sheet. Functional Diagrams continued at end of data sheet. UCSP is a trademark of Maxim Integrated Products, Inc. 15 GND N.C. 7 14 N.C. N.C. 8 13 N.C. N.C. 9 12 N.C. N.C. 10 11 N.C. SO For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com. 19-5337; Rev 5; 7/10

ブランド

MAXIM

会社名

Maxim Integrated

本社国名

U.S.A

事業概要

アナログおよびミックスドシグナル半導体製品を設計、製造、販売している米国系の株式会社である。 マキシム・インテグレーテッドは、工業、通信、民生、コンピューティングの各市場向けに集積回路を開発しています

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