DS3231MZ/V+

Real Time Clock Overview

The DS3231MZ/V+ is an automotive-qualified, low-cost I²C real-time clock (RTC) from Analog Devices/Maxim Integrated. It incorporates a MEMS resonator and digital temperature compensation to maintain ±5ppm accuracy (-0.432 seconds/day) across the -45°C to +85°C range. The device features complete calendar functionality with leap-year compensation up to 2100, two programmable alarms, and a 1Hz output. It operates on a 2.3V to 5.5V supply and includes battery backup switching. Packaged in an 8-pin SO, it supports fast-mode I²C communication at 400kHz.

Real Time Clock Feature Summary

• Integrated MEMS resonator with digital temperature compensation for ±5ppm accuracy from -45°C to +85°C
• Automotive qualification indicated by the /V suffix
• Complete clock/calendar with leap-year compensation up to year 2100
• Dual power supply management with automatic VCC-to-VBAT switching upon power failure

Real Time Clock Applications

• Power meters
• Industrial applications

Real Time Clock Procurement Notes

Verify that the specific order contains the /V suffix to confirm automotive qualification status. Confirm the package type is the 8-pin Small Outline (SO). Ensure compatibility with system voltage levels between 2.3V and 5.5V. Check for lead-free/RoHS compliance indicated by the '+' suffix.

Real Time Clock Selection Notes

Select this component when automotive-grade reliability is required alongside high timekeeping precision. The 8-pin SO package offers a smaller footprint compared to the 16-pin variant. Ensure the application environment stays within the specified -45°C to +85°C operating temperature range for guaranteed accuracy specifications.

Real Time Clock Part Context

This part belongs to the DS3231M family of real-time clocks. It shares functional compatibility with the standard DS3231 but adds automotive qualification. The primary distinction from other variants is the 8-pin SO package and the specific environmental rating associated with the /V designation.

Real Time Clock Replacement Considerations

The DS3231MZ+ serves as the non-automotive equivalent with identical electrical characteristics and pinout. The DS3231M+ is functionally compatible but utilizes a 16-pin SO package.