M41ST85WMX6TR in Reel by STMicroelectronics | Real Time Clocks | Future Electronics
text.skipToContent text.skipToNavigation

warning.svgOrders shipping outside of United States will be on hold while the company evaluates tariff impacts.
Please contact your salesperson for assistance.

  1. home
  2. Semiconductors
  3. Real Time Clocks
  4. M41ST85WMX6TR

STMicroelectronics | M41ST85WMX6TR

Manufacturer Part #

M41ST85WMX6TR

M41ST Series 3.6 V I2C Serial RTC NVRAM / Microprocessor Supervisor - SOIC-28

ECAD Model:
Mfr. Name: STMicroelectronics
Standard Pkg:
Product Variant Information section
Date Code: 2416
Product Specification Section
STMicroelectronics M41ST85WMX6TR - Technical Attributes
Attributes Table
Date Format: DW:DM:M:Y
Time Format: HH:MM:SS:hh
Interface: I2C / 2-Wire / Serial
Non-Volatile Memory Size: 44B
SRAM Size: 64b
Supply Voltage-Nom: 2.7V to 3.6V
Temperature Grade: Industrial
Operating Temp Range: -40°C to +85°C
Storage Temperature Range: -55°C to +150°C
Package Style:  SOIC-28
Mounting Method: Surface Mount
Features & Applications
The M41ST85WMX6TR is a 3.6 V supply voltage, I2C combination serial real time clock, NVRAM supervisor and microprocessor supervisor, available in SOX-28 Package. 

It is built in a low-power CMOS SRAM process and has a 64-byte memory space with 44 bytes of NVRAM and 20 memory-mapped RTC registers. The RTC registers are configured in binary coded decimal (BCD) format.

Features:

  • Automatic battery switchover and WRITE protect for:
    • Internal serial RTC and 
    • External low power SRAM (LPSRAM)
  • 400 kHz I2C serial interface
  • 3.0/3.3 V operating voltage
    • VCC = 2.7 to 3.6 V
  • Ultralow battery supply current of 500 nA (max)
  • –40°C to +85°C operation
  • RoHS compliant
    • Lead-free second level interconnect
  • Serial RTC features:
    • 400 kHz I2C
    • 44 bytes of general purpose NVRAM
    • Counters for: seconds, minutes, hours, day, date, month, and year
    • Century
    • Tenths/hundredths of seconds
    • Clock calibration register allows compensation for crystal variations over temperature
    • 2.5 to 5.5 V oscillator operating voltage
  • Microprocessor supervisor features:
    • Programmable watchdog : 62.5 ms to 128 s time-out period
    • Early power-fail warning circuit (PFI/PFO) with 1.25 V precision reference
  • NVRAM supervisor features:
  • Programmable squarewave generator (1 Hz to 32 kHz)
  • –40°C to +85°C operation
Read More...
Pricing Section
Global Stock:
6,000
USA:
6,000
On Order:
0
Factory Stock:Factory Stock:
-1
Factory Lead Time:
24 Weeks
Minimum Order:
1000
Multiple Of:
1000
Total
$3,820.00
USD
Quantity
Unit Price
1,000+
$3.82
Product Variant Information section