MAX6910EO33+T

Real Time Clock Overview

The MAX6910EO33+T is an I2C-compatible real-time clock (RTC) with a microprocessor supervisor, NV RAM controller, and optional trickle charger. It operates at 3.0V to 3.6V in a 20-pin QSOP package over -40°C to +85°C. The device provides timekeeping for seconds through year, including leap year compensation up to 2100. It features 31 bytes of static RAM, programmable alarms, and watchdog timer functions. Electrical characteristics include less than 1µA timekeeping current at 3.0V and a 400kHz serial interface.

Real Time Clock Feature Summary

• I2C-compatible RTC with calendar, alarm, and watchdog timer
• 31-byte NV SRAM for scratchpad storage
• Microprocessor supervisor with reset threshold options
• Programmable trickle charger for backup battery management

Real Time Clock Applications

• Point-of-Sale Equipment
• Programmable Logic Controller
• Handheld Instruments
• Medical Instrumentation

Real Time Clock Procurement Notes

Verify the EO33 suffix indicates a 3.0V to 3.6V operating voltage range. Confirm the T suffix denotes tape-and-reel packaging. Check current availability status as this component may be subject to limited supply or end-of-life conditions.

Real Time Clock Selection Notes

Select the MAX6910 variant specifically if the trickle charger feature is required for the backup power source. Ensure the system voltage aligns with the 3.0V to 3.6V range specified for the EO33 suffix. Verify that the 20-pin QSOP package fits the PCB layout constraints.

Real Time Clock Part Context

This part belongs to the MAX6909/MAX6910 family of I2C-compatible real-time clocks. The MAX6910 distinguishes itself from the MAX6909 by including an on-chip programmable trickle charger for battery backup applications. Both share identical RTC and supervisor functionalities.

Real Time Clock Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.