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MCP79410

Battery-Backed I2C Real-Time Clock/Calendar with SRAM and EEPROM

Status: In Production

Features:

  • Hours, Minutes, Seconds, Day of Week, Day, Month, Year
  • Leap year compensated  to 2399
  • 12/24 hour modes
  • 1 PPM Resolution
  • ±129 PPM Range
  • Dual Programmable Alarms
  • Clock output with selectable frequency
  • Alarm output
  • General Purpose output
  • Time logged on switchover to and from Battery Backup
  • I2C Clock Frequency up to 400 kHz
  • 64 Bytes Battery-Backed SRAM
  • 1Kb EEPROM Memory
  • Robust write unlock sequence
  • Operating Voltage 1.8V to 5.5V
  • Backup Voltage 1.3V to 5.5V
  • Low Typical Timekeeping Current
  • Automatic Switchover to Battery Backup
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Overview
Documents
Development Environment
Similar Devices
RoHS Information
Add To Cart

Device Overview

Summary

The MCP79410 general purpose I2C™Compatible real-time clock/calendar (RTCC) is highly integrated with nonvolatile memory and advanced features normally found in higher priced devices. These features include a battery switchover circuit for backup power, a timestamp to log power failures and digital trimming for accuracy. Using a low-cost 32.768 kHz crystal or other clock source, time is tracked in either a 12-hour or 24-hour format with an AM/PM indicator and timing to the second, minute, hour, day of the week, day, month and year. As an interrupt or wakeup signal, a multifunction open drain output can be programmed as an Alarm Out or as a Clock Out that supports 4 selectable frequencies. In addition, non-volatile memory is included along with a Unique ID in a locked section of EEPROM that can be unlocked and programmed by the End User.

Additional Features
    Timekeeping
    • Battery-Backed Real-Time Clock/Calendar (RTCC)
      • Hours, Minutes, Seconds, Day of Week, Day, Month, Year
      • Leap year compensated  to 2399
      • 12/24 hour modes
    • On-Chip Digital Trimming/Calibration
      • 1 PPM Resolution
      • ±129 PPM Range
    • Dual Programmable Alarms
    • Versatile Output Pin
      • Clock output with selectable frequency
      • Alarm output
      • General Purpose output
    • Power-Fail Time-Stamp
      • Time logged on switchover to and from Battery Backup
    • 2-Wire Serial Interface, I2C™Compatible
      • I2C Clock Frequency up to 400 kHz
    User Memory
    • 64 Bytes Battery-Backed SRAM
    • 1Kb EEPROM Memory
      • 64-bit Protected EEPROM Area
        • Robust write unlock sequence
      Low-Power
      • Wide Voltage Range
        • Operating Voltage 1.8V to 5.5V
        • Backup Voltage 1.3V to 5.5V
      • Low Typical Timekeeping Current
      • Automatic Switchover to Battery Backup
    Parametrics
    Name
    Value
    Max Communications Speed
    400 KHz
    Pin Count
    8
    Minimum Clock Count (seconds)
    1 sec
    Battery-backed SRAM (Bytes)
    64
    EEPROM (Kbits)
    1
    Unique ID (bits)
    64
    Unique ID Programming
    Blank ID
    Temperature Range (C)
    -40 to +85

    Documents

    Jump to:

    Development Environment

    • Integrated Development Environments
    • Programmers
    • Demo & Evaluation Boards
    • Code Examples
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    • Socket: AC164344   PartNo: MCP79410 (8SN)
    • Socket: AC164365   PartNo: MCP79410 (8ST)
    • Socket: AC164366   PartNo: MCP79410 (8MS)
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    Demo & Evaluation Boards
    MCP79410 RTCC PICtail Plus Daughter Board
    MCP79410 RTCC PICtail Plus Daughter Board ( AC164140 )

    The MCP7941X RTCC PICtail™ Plus Daughter Board demonstrates the features and abilities of the MCP7941X and MCP7940X I²C™ Real-Time Clock/Calendar family in standard development platforms. By designing this daughter board with the PICtail Plus, PICtail and PICkit™ serial connectors, it will operate with the Explorer 16 Development Board, the PICDEM PIC18 Explorer Board, the...

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    RoHS Information

    Part Number
    Device Weight (g)
    Shipping Weight (grams)
    Lead Count
    Package Type
    Package Width
    Solder Composition
    JEDEC Indicator
    RoHS
    China EFUP
    MCP79410-I/MS
    0.025600
    0.070000
    8
    MSOP
    3x3mm
    Matte Tin
    e3
    MCP79410T-I/MS
    0.025600
    0.215600
    8
    MSOP
    3x3mm
    Matte Tin
    e3
    MCP79410-I/MNY
    0.014300
    0.466667
    8
    TDFN
    2x3x0.8mm
    NiPdAu
    e4
    MCP79410T-I/MNY
    0.014300
    0.248485
    8
    TDFN
    2x3x0.8mm
    NiPdAu
    e4
    MCP79410-I/ST
    0.033000
    0.090000
    8
    TSSOP
    4.4mm
    Matte Tin
    e3
    MCP79410T-I/ST
    0.033000
    0.215600
    8
    TSSOP
    4.4mm
    Matte Tin
    e3
    MCP79410-I/SN
    0.078000
    0.250000
    8
    SOIC
    .150In(3.90mm)
    Matte Tin
    e3
    MCP79410T-I/SN
    0.078000
    0.230303
    8
    SOIC
    .150In(3.90mm)
    Matte Tin
    e3
    To see a complete listing of RoHS data for this device, please Click here
    Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

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