MCP79412T-I/SN

$0.96

Description：IC RTC CLK/CALENDAR I2C 8SOIC
Series：-

SKU:1cce04d7d035 Category: Real Time Clocks Brand: Microchip Technology

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Product introduction

MCP79412T-I/SN is listed in the Real Time Clock range at ChipApex. The manufacturer field lists Microchip Technology. Its product description is IC RTC CLK/CALENDAR I2C 8SOIC. Review the specifications below when checking this part for your BOM.

Real Time Clock specifications for MCP79412T-I/SN

Description：IC RTC CLK/CALENDAR I2C 8SOIC
Series：-
Package：Tape & Reel (TR),Cut Tape (CT)
Mfr：Microchip Technology
Type：Clock/Calendar
Features：Alarm, Leap Year, Square Wave Output, SRAM, Unique ID
Memory Size：64B, 1Kb
Time Format：HH:MM:SS (12/24 hr)
Date Format：YY-MM-DD-dd
Interface：I2C, 2-Wire Serial
Voltage - Supply：1.8V ~ 5.5V
Voltage - Supply, Battery：1.3V ~ 5.5V
Current - Timekeeping (Max)：1.2µA @ 3.3V
Operating Temperature：-40°C ~ 85°C
Mounting Type：Surface Mount
Grade：-
Qualification：-
Package / Case：8-SOIC (0.154", 3.90mm Width)
Supplier Device Package：8-SOIC

Real Time Clock datasheet and documents for MCP79412T-I/SN

MCP79412T-I/SN

Real Time Clock Overview

The MCP79412T-I/SN is a battery-backed I2C Real-Time Clock/Calendar (RTCC) integrated circuit manufactured by Microchip Technology. It operates within an industrial temperature range of -40°C to +85°C and supports a supply voltage of 1.8V to 5.5V, with backup support from 1.3V to 5.5V. The device features a low timekeeping current of 1.2µA at 3.3V on VCC and 925nA at 3.0V on VBAT. It includes 64 bytes of SRAM, 1 Kbit of EEPROM, and pre-programmed EUI-64 protected memory. Communication is handled via an I2C interface supporting up to 400 kHz.

Real Time Clock Feature Summary

Integrated RTCC with dual programmable alarms and power-fail timestamp logging
On-chip digital trimming for oscillator calibration with ±1 ppm resolution
Pre-programmed 64-bit EUI-64 MAC address in protected EEPROM area
Automatic switchover between primary and backup power supplies

Real Time Clock Applications

Electronic devices requiring precise timekeeping and calendar functions
Systems needing non-volatile storage for unique identifiers or critical data
Battery-powered applications utilizing low standby current modes

Real Time Clock Procurement Notes

Verify the package type matches the 'SN' suffix, which indicates an 8-lead SOIC housing. Confirm the 'I' designation corresponds to the industrial temperature range (-40°C to +85°C). Ensure the specific revision level aligns with design requirements, as datasheet revisions may update electrical characteristics or pin descriptions.

Real Time Clock Selection Notes

Select this component when an EUI-64 identifier is required alongside standard RTC functionality. Compare against MCP79410 or MCP79411 if different memory protection levels are needed. Verify that the system's I2C bus timing meets the specified rise/fall times for the target operating voltage.

Real Time Clock Part Context

This part belongs to the MCP7941X family, which shares functional similarities but differs in protected memory content. The MCP79410 has unprogrammed protected EEPROM, while the MCP79411 contains an EUI-48 address. The T-I/SN suffix specifies the tape-and-reel packaging, industrial grade, and SOIC package style.