DS3232SN# by Analog Devices

Extremely Accurate I²C RTC with Integrated Crystal and SRAM

Status: Active
Series: DS3232
RoHS: Unknown
View Datasheet Manufacturer Site View Pricing & Stock

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. 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 active-low AM/PM indicator. Two programmable time-of-day 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 active-low RST pin is monitored as a pushbutton input for generating a µP reset.

Prices starting from US$6.94


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Logo for element14 element14 US$7.43
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Logo for Newark Electronics Newark Electronics US$8.44
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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
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
Active-Low RST Input/Output
300-Mil, 20-Pin SO Package

Specifications

Frequency 32.768kHz
Osc. Type TCXO
Tuning Adjustment Type Digital
Frequency Output Type CMOS Push-Pull
Frequency Stability (±ppm/yr) (0 to +40°C) 2
Frequency Stability (±ppm/yr) (-40 to 0°C/ +40 to +85°C) 3.5
Frequency Stability (±ppm/yr) (vs. VCC) 1 (typ)
Frequency Stability (±ppm) (vs. Aging) 5 (0-10 Years)
VSUPPLY (V) 2.3 to 5.5
Package/Pins SOIC (W)/20
BudgetaryPrice (See Notes) 4.85


DS3232SN# Semiconductors - ICs by Analog Devices

RTC W/TCXO I²C 2WIRE SERI 20SOIC

Status: Unknown
Series: -
RoHS: Unknown
View Datasheet Manufacturer Site View Pricing & Stock

The DS3232 is a low-cost temperature-compensated crystal oscillator (TCXO) with a very accurate, tempera- ture-compensated, integrated real-time clock (RTC) and 236 bytes of battery-backed SRAM. Additionally, the DS3232 incorporates a battery input and maintains accu- rate timekeeping when main power to the device is inter- rupted. 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. 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-of- day 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 refer- ence 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 nec- essary. Additionally, the RST pin is monitored as a pushbutton input for generating a µP reset.

Specifications

Date Format DD
Clock Format HH
Clock IC Type RTC
Supply Voltage Min 2.3V
Supply Voltage Max 5.5V
Clock IC Case Style SOIC
No. of Pins 20Pins
IC Interface Type I2C
Operating Temperature Min -40°C
Operating Temperature Max 85°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant To Be Advised
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)
Base Number 3232
Clock Frequency 32.768kHz
No. of Outputs 1Outputs
Operating Temperature Range -40°C to +85°C
RTC Features Square-Wave Output
Supply Voltage Range 2.3V to 5.5V
Termination Type Surface Mount Device
Voltage Vcc 3.3V

Alternative Descriptions

RTC W/TCXO, I²C, 2WIRE SERI, 20SOIC | element14
Alarm Rtc, I2C, 5.5V, Soic-20 | Newark Electronics

Frequently Asked Questions

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This part has not been flagged as RoHS Compliant.

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Authorised distributors including element14, Farnell and Newark Electronics have stock available or on a lead time for DS3232SN# .

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