MCP79411-I/SN Microchip Integrated Circuit (Small Outline Packages) In Stock
MCP79411-I/SN is a real-time clock IC with battery switchover, 64-byte SRAM, and I2C serial interface in an 8-pin SOIC package. It operates from 1.8 V to 5.5 V, supports 100 kHz and 400 kHz I2C modes, and includes an interrupt output and unique ID. Available from stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP79411-I/SN Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.3048(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of MCP79411-I/SN?
- Battery switchover circuit with automatic transition to backup power when VCC drops below VBAT
- 64-byte general-purpose SRAM for non-volatile user data storage alongside timekeeping registers
- I2C interface supporting both 100 kHz standard and 400 kHz fast modes from 1.8 V supply
- Unique 64-bit factory-programmed ID enabling device identification in multi-node systems
What is MCP79411-I/SN used for?
MCP79411-I/SN is used in embedded systems requiring accurate timekeeping with backup power, such as industrial data loggers, smart meters, and medical monitoring equipment that must maintain timestamps during power outages. Its 64-byte SRAM stores calibration data or event records locally, reducing the need for external EEPROM in compact designs. The battery switchover feature and interrupt output also make it suitable for alarm scheduling in portable consumer electronics and IoT edge nodes.
What are the specifications of MCP79411-I/SN?
| Manufacturer Package Code | SOIC-8 |
| Factory Lead Time | 6Weeks |
| YTEOL | 9 |
| Additional Feature | ALSO OPERATES AT 100KHZ WITH 1.8 V NOMINAL |
| Clock Frequency-Max | 0.032MHz |
| Information Access Method | SERIAL(I2C) |
| Interrupt Capability | Y |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e3 |
| On Chip Data RAM Width | 8 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.23 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| RAM (words) | 64 |
| Screening Level | TS 16949 |
| Supply Current-Max | 3mA |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 1.8V |
| Supply Voltage-Nom | 2.5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time-Min | SECONDS |
| Volatile | NO |
| uPs/uCs/Peripheral ICs Type | TIMER, REAL TIME CLOCK |
| ## MCP79411-I/SN Alternates Showing results | Image |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Thailand |
Where can I find the MCP79411-I/SN datasheet?
MCP79411-I/SN Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP79411-I/SN?
Compatible alternatives and drop-in replacements for MCP79411-I/SN:
Frequently Asked Questions
How does MCP79411-I/SN handle power loss, and what backup supply range is supported?
MCP79411-I/SN includes an automatic battery switchover circuit that seamlessly transfers timekeeping to a backup supply when VCC falls below VBAT. The backup input accepts voltages from 1.3 V to 5.5 V, allowing a standard CR2032 coin cell at 3 V to maintain accurate real-time clock operation across a temperature range of -40 °C to +85 °C without interruption.
For a data-logging application needing local storage, how much on-chip RAM does MCP79411-I/SN provide?
MCP79411-I/SN integrates 64 bytes of general-purpose SRAM accessible over the I2C interface at addresses separate from the timekeeping registers. This 64-byte block can store sensor calibration offsets, device configuration, or small event records directly on the RTC without adding an external EEPROM, saving PCB area and BOM cost in compact 8-pin SOIC designs.
What I2C clock frequencies does MCP79411-I/SN support, and at what supply voltage?
MCP79411-I/SN supports both standard-mode I2C at 100 kHz and fast-mode I2C at 400 kHz. Importantly, the 100 kHz mode operates correctly down to a 1.8 V nominal supply voltage, making it compatible with low-voltage microcontrollers and SoCs in battery-powered IoT designs without level translation.
How can MCP79411-I/SN help distinguish multiple devices in a production system?
MCP79411-I/SN includes a factory-programmed 64-bit unique identification number stored in protected memory, readable over I2C. This unique ID can serve as a hardware serial number for asset tracking, secure boot seed generation, or network-node addressing in systems with multiple boards, eliminating the need for an external EEPROM or OTP device for identification.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.3048 | $0.30 |
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