DS3232M
PRODUCTION±5ppm, I²C Real-Time Clock with SRAM
Temperature-Compensated MEMS RTC Adds Memory in Smallest of Packages
- Part Models
- 4
- 1ku List Price
- Starting From $4.63
Part Details
- Timekeeping Accuracy ±5ppm (±0.432 Second/Day) from -40°C to +85°C
- 236 Bytes of Battery-Backed User SRAM
- Battery Backup for Continuous Timekeeping
- Low Power Consumption
- Functionally Compatible to DS3232
- Complete Clock Calendar Functionality Including Seconds, Minutes, Hours, Day, Date, Month, and Year with Leap Year Compensation Up to Year 2100
- Two Time-of-Day Alarms
- 1Hz and 32.768kHz Outputs
- Reset Output and Pushbutton Input with Debounce
- Fast (400kHz) I²C-Compatible Serial Bus
- +2.3V to +4.5V Supply Voltage
- Digital Temp Sensor with ±3°C Accuracy
- -40°C to +85°C Temperature Range
- 8-Pin SO (150 mils) Package
- Underwriters Laboratories (UL) Recognized
The DS3232M is a low-cost, extremely accurate, I²C real-time clock (RTC) with 236 bytes of battery-backed SRAM. The device incorporates a battery input and maintains accurate timekeeping when main power to the device is interrupted. The integration of the microelectromechanical systems (MEMS) resonator enhances the long-term accuracy of the device and reduces the piece-part count in a manufacturing line.
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 1Hz 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 microprocessor reset. See the Block Diagram in the data sheet for more details.
Applications
- Building Automation
- High-Definition Video Security
- Industrial Application
- Power Meters
Documentation
Data Sheet 1
Reliability Data 1
Design Note 5
Technical Articles 5
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| DS3232MZ+ | Small-Outline IC, Narrow (0.15in) | ||
| DS3232MZ+TRL | Small-Outline IC, Narrow (0.15in) | ||
| DS3232MZ/V+ | Small-Outline IC, Narrow (0.15in) | ||
| DS3232MZ/V+T | Small-Outline IC, Narrow (0.15in) |
This is the most up-to-date revision of the Data Sheet.
Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Serial Address RTCs 4 | ||
| DS3231M | PRODUCTION | ±5ppm, I2C Real-Time Clock |
| DS3232 | PRODUCTION | Extremely Accurate I²C RTC with Integrated Crystal and SRAM |
| DS3231 | PRODUCTION | Extremely Accurate I²C-Integrated RTC/TCXO/Crystal |
| DS3234 | PRODUCTION | Extremely Accurate SPI Bus RTC with Integrated Crystal and SRAM |
| Silicon Oscillators 1 | ||
| DS32KHZ | RECOMMENDED FOR NEW DESIGNS | 32.768kHz Temperature-Compensated Crystal Oscillator |
Tools & Simulations
Software Development 1
Evaluation Kits
Evaluation Kits for the DS3231M or DS3232M
Evaluation Kits for the DS3231M or DS3232M
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