Overview
The DS3231MZ/V+ is a highly accurate, low-cost I2C real-time clock (RTC) produced by Analog Devices Inc./Maxim Integrated. This device incorporates a battery input, ensuring continuous timekeeping even when the main power is interrupted. The integration of a microelectromechanical systems (MEMS) resonator enhances the long-term accuracy of the device and reduces the piece-part count in manufacturing. The DS3231MZ/V+ is available in the same footprint as the popular DS3231 RTC, making it a versatile and reliable choice for various applications.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Timekeeping Accuracy | Accuracy from -45°C to +85°C | ±5ppm (±0.432 second/day) |
| Supply Voltage | Operating voltage range | +2.3V to +5.5V |
| Operating Temperature Range | Temperature range for operation | -40°C to +85°C |
| Package Type | Package options | 8-Pin or 16-Pin SO Packages |
| I2C Interface | Speed of the I2C interface | Fast (400kHz) |
| Outputs | Available output frequencies | 1Hz and 32.768kHz |
| Alarms | Number of time-of-day alarms | Two time-of-day alarms |
| Digital Temp Sensor | Accuracy of the digital temperature sensor | ±3°C |
| Battery Backup | Battery backup input for continuous timekeeping | Yes |
Key Features
- Highly accurate RTC with integrated MEMS resonator, managing all timekeeping functions
- 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 and 1Hz and 32.768kHz outputs
- Reset output and pushbutton input with debounce
- Digital temperature sensor with ±3°C accuracy
- Simple serial interface connects to most microcontrollers
- Fast (400kHz) I2C interface
- Battery-backup input for continuous timekeeping and low power operation to extend battery-backup run time
- UL recognized and RoHS compliant
Applications
- Building automation
- High-definition video security
- Industrial applications
- Portable instruments
- Power meters
Q & A
- What is the timekeeping accuracy of the DS3231MZ/V+?
The DS3231MZ/V+ has a timekeeping accuracy of ±5ppm (±0.432 second/day) from -45°C to +85°C.
- What is the operating temperature range of the DS3231MZ/V+?
The operating temperature range is -40°C to +85°C.
- What types of packages are available for the DS3231MZ/V+?
The DS3231MZ/V+ is available in 8-Pin or 16-Pin SO Packages.
- Does the DS3231MZ/V+ support battery backup?
Yes, the DS3231MZ/V+ has a battery-backup input for continuous timekeeping.
- What is the speed of the I2C interface on the DS3231MZ/V+?
The I2C interface operates at a speed of 400kHz.
- What are the available output frequencies of the DS3231MZ/V+?
The device provides 1Hz and 32.768kHz output frequencies.
- How many time-of-day alarms does the DS3231MZ/V+ support?
The DS3231MZ/V+ supports two time-of-day alarms.
- What is the accuracy of the digital temperature sensor in the DS3231MZ/V+?
The digital temperature sensor has an accuracy of ±3°C.
- Is the DS3231MZ/V+ RoHS compliant?
Yes, the DS3231MZ/V+ is RoHS compliant.
- What are some common applications of the DS3231MZ/V+?
Common applications include building automation, high-definition video security, industrial applications, portable instruments, and power meters.
