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STMICROELECTRONICS M41ST85WMH6F Real-Time Clock Module

The M41ST85W is a low-power serial real-time clock, NVRAM supervisor, and microprocessor supervisor in a compact package. It features a 400 kHz I?C serial RTC, 64-byte memory with 44 bytes of NVRAM, and 20 clock registers in BCD format for timekeeping and calendar functions. It includes an automatic backup battery switchover that maintains RTC and external SRAM in power failure, a programmable watchdog, and power-on reset/low voltage detection. The device supports precise calibration, alarm functions, square wave output, and operates efficiently with a built-in 32.768 kHz crystal oscillator, ideal for embedded systems.

Authorized Distributors
Source:Newark
Part No:M41ST85WMH6F
Stock:72
Inv Date:06-11-2026
Price: Unit price: $9.6
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Source:DigiKey
Part No:M41ST85WMH6F
Stock:936
Inv Date:06-11-2026
Price: Unit price: $5.85244
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Part No:M41ST85WMH6F
Stock:847
Inv Date:06-12-2026
Price: Unit price: $9.54
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Part No:M41ST85WMH6F
Stock:0
Inv Date:06-11-2026
Price: Unit price: $5.02
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Part No:M41ST85WMH6F
Stock:586
Inv Date:06-12-2026
Price: N/A
Buy/RFQ:

STMICROELECTRONICS M41ST85WMH6F Real-Time Clock Module Specifications:

  • Supply Voltage: 2.7 to 3.6 V
  • Operating Temperature Range: -40°C to 85°C
  • Memory Space: 64 bytes total, 44 bytes NVRAM, 20 clock registers
  • Clock Frequency: 32.768 kHz crystal oscillator
  • Interface: 400 kHz I2C serial bus
  • Power Consumption: 500 nA max in low-power standby
  • Alarm Functionality: Programmable triggers, repeat modes
  • Square Wave Output: Programmable frequency from 1 Hz to 32 KHz
  • Backup Battery: External lithium button cell, 48mAh or 120mAh options
  • Package: 28-lead SOIC (SNAPHAT or embedded crystal options)
  • Protection: Automatic battery switchover, write protect external SRAM during power failure
  • Features: Power-on reset, low voltage detect, calibration circuit for timing accuracy

Buy the ST Series RTC and Supervisor: M41ST85W

Order the ST Series RTC and supervisor M41ST85W online today to ensure precise timekeeping and system supervision. This compact device features automatic backup switchover, programmable alarms, and a low power design, making it ideal for embedded systems. With multiple package options including SNAPHAT and embedded crystal, it simplifies integration into your designs. Get reliable operation, calibration for high accuracy, and efficient power consumption by purchasing directly online and enjoy fast delivery and comprehensive support.

Buy ST Series RTC and Supervisor M41ST85W now and experience unmatched reliability and performance, ensuring accurate timekeeping and system stability.

Frequently Asked Questions

Where can I buy STMICROELECTRONICS M41ST85WMH6F?

You can click on the BUY or RFQ button to purchase M41ST85WMH6F from an authorized STMICROELECTRONICS distributor.

How do I troubleshoot issues or seek technical support for part M41ST85WMH6F?

You can download the M41ST85WMH6F datasheet or visit the STMICROELECTRONICS website for support.

Who is the manufacturer of M41ST85WMH6F?

STMICROELECTRONICS

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