CThe DS3232SN is a high accuracy real time clock (RTC) IC from Analog Devices, designed for precise timekeeping and calendar functions. It integrates a temperature compensated crystal oscillator, 236 bytes of battery backed SRAM, two programmable alarms, and a battery backup input. Its I2C interface enables communication with microcontrollers and embedded systems. The DS3232SN is supplied in a 20 pin SO package. <Cite refs={["turn786637search0","turn786637search12"]}/>

Key Features -

• High accuracy real time clock and calendar

• Integrated temperature compensated crystal oscillator

• 236 bytes of battery backed SRAM for data retention

• I2C serial communication interface supporting speeds up to 400 kHz

• Two programmable time of day alarms

• Programmable square wave output

• Integrated digital temperature sensor

• Battery backup for continued timekeeping during main power interruptions

• Automatic leap year compensation through 2099

• Active low reset input and output

Specifications -

• Part Number: DS3232SN

• Manufacturer: Analog Devices

• IC Type: Real Time Clock and Calendar

• Package: 20 pin SOIC, 300 mil wide

• Communication Interface: I2C

• Supply Voltage: 2.3V to 5.5V

• Memory: 236 bytes of battery backed SRAM

• Alarm Functions: Two programmable alarms

• Clock Format: 12 hour or 24 hour

• Temperature Sensor Accuracy: Plus or minus 3 C

• Timekeeping Accuracy: Plus or minus 2 ppm from 0 C to positive 40 C; plus or minus 3.5 ppm from negative 40 C to positive 85 C

Applications -

• Microcontroller based clock and calendar systems

• Industrial data logging and timestamp recording

• GPS and telematics equipment

• Utility meters and monitoring systems

• Embedded systems requiring accurate timekeeping

• Servers and communication equipment

• Battery backed memory and timekeeping circuits