MCP79412T-I/MNY Clock,Timing & Frequency Management by Microchip Technology

Battery-Backed I2C Real-Time Clock/Calendar with Pre-Programmed EUI-64™ MAC ID

Status: Active
Series: MCP79412
RoHS: Compliant
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The MCP79412 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 is factory programmed with an EUI-48 MAC Address.

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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
Preprogrammed EUI-64™ MAC Address
Operating Voltage 1.8V to 5.5V
Backup Voltage 1.3V to 5.5V
Low Typical Timekeeping Current
Automatic Switchover to Battery Backup

Specifications

Max Interface Speed 400 KHz
Pin Count 8
Minimum Clock_Count 1 sec
User SRAM (Bytes) 64
EEPROM Data Memory Bytes 1
Unique_ID (Bits) 64
Unique ID with MAC Addr EUI-64
Temperature Range -40 to +85
Pins | Packaging 8 | TDFN
Temp Range -40C to +85C
Packing Media Tape and reel (3300)

Last 6 months Inventory & Pricing History


Resources



Application Notes
AN1355 - A Complete Electronic Watch Based on MCP79410 I2C? RTCC
AN1364 - Using the Alarm Feature on the MCP79410 RTCC to Implement a Delayed Alarm
AN1365 - Recommended Usage of Microchip Serial RTCC Devices
AN1413 - Temperature Compensation of a Tuning Fork Crystal Based on MCP79410
AN1414 - Using HI-TECH C Compiler to Interface RTCC Devices to 8-Bit PIC MCUs
AN1491 - Configuring the MCP794XX RTCC Family
AN1496 - Debugging Stand-Alone Real-Time Clock/Calender-based Applications
AN1519 - Recommended Crystals for Microchip Stand-Alone Real-Time Clock/Calendar Devices
TB3116 - Questions and Answers Concerning MCP79XXX Serial RTCCs
AN2027 - Backup Power Sources for Microchip's RTCCs and SRAMs
TB3187 - Organizationally Unique Identifiers for Preprogrammed EUI-48 and EUI-64 Address Devices





Environmental Information

JEDEC Indicator e4
ROHS Compliant
China EFUP Compliant
Device Weight (g) 0.0143
Shipping Weight (kg) 0.248485
Lead Count 8
Package Type TDFN
Package Width or Size 2x3x0.8mm
Soldering Composition NiPdAu

Alternative Descriptions

I2C GP RTCC, 1Kb EE, 64B SRAM, EUI-64 | Microchip Technology
Rtcc, Gp I2C, 1Kb Ee 64B Sram, Id, 8Tdfn | Newark Electronics
RTCC, GP I2C, 1KB EE 64B SRAM, ID, 8TDFN | element14
IC: RTC circuit | TME


Frequently Asked Questions

Where can I find additional details, specifications and documents for a MCP79412T-I/MNY?

Additional datasheets, footprints and schematics for MCP79412T-I/MNY are listed on our Part Details page. You can also find images and similar parts to MCP79412T-I/MNY on this page.

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What category does MCP79412T-I/MNY fall under?

The MCP79412T-I/MNY is listed under Semiconductors - ICs > Clock,Timing & Frequency Management > Real Time Clocks.

Can I view similar or alternative parts?

You can view similar parts to MCP79412T-I/MNY when available in the Real Time Clocks range under the specifications section at the bottom of the details page.

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Is the MCP79412T-I/MNY RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Microchip Technology.

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