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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
Pricing Section
Global Stock:
4,000
USA:
4,000
On Order:
0
Factory Stock:Factory Stock:
-1
Factory Lead Time:
24 Weeks
Minimum Order:
1000
Multiple Of:
1000
Total
$4,720.00
USD
Quantity
Unit Price
1,000+
$4.72
Product Variant Information section