DS3232MZ+TRL

Real Time Clock Overview

The DS3232MZ+TRL is an I2C real-time clock (RTC) featuring a MEMS resonator for ±5ppm accuracy from -40°C to +85°C. It includes 236 bytes of battery-backed SRAM, two programmable alarms, and a 1Hz output. The device operates on a 2.3V to 4.5V supply with automatic power-fail detection and switching to VBAT. Key interfaces include a fast-mode I2C bus, INT/SQW interrupt/square-wave pin, and RST reset/pushbutton input. It provides digital temperature sensing with ±3°C accuracy and supports both 12-hour and 24-hour time formats.

Real Time Clock Feature Summary

• ±5ppm timekeeping accuracy using integrated MEMS resonator
• 236 bytes of battery-backed general-purpose SRAM
• Automatic power-fail detection and backup supply switching
• Two programmable time-of-day alarms and 1Hz square-wave output

Real Time Clock Applications

• Power meters
• Industrial applications

Real Time Clock Procurement Notes

Verify the ordering suffix '+TRL' corresponds to the tape-and-reel packaging variant as specified in the manufacturer's documentation. Confirm that the component meets RoHS compliance requirements and AEC-Q100 automotive qualification standards if applicable to the design. Ensure the specific revision level matches the intended application constraints.

Real Time Clock Selection Notes

Select this component when high long-term accuracy without external crystals is required. The integrated MEMS resonator reduces piece-part count. Ensure the system voltage remains within the 2.3V to 4.5V range. Verify that the I2C bus speed supports up to 400kHz fast mode. Consider the 8-pin SO package dimensions for PCB layout constraints.

Real Time Clock Part Context

This part belongs to the DS3232M family of real-time clocks. It is functionally compatible with the DS3232 but utilizes an internal MEMS resonator instead of an external crystal. The 'MZ' designation indicates the SOIC-8 package variant. The '+TRL' suffix specifically denotes the reel packaging format for automated assembly.

Real Time Clock Replacement Considerations

The DS3231MZ+ series is a functional alternative lacking the SRAM memory block. Designers must verify register compatibility and ensure the absence of SRAM usage in the original design before substitution.