MCP79511-I/MS Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip MCP79511-I/MS is a real-time clock with 64-byte battery-backed SRAM, SPI interface, and interrupt output in a 10-pin MSOP package. It operates from 1.8 V to 5.5 V supply with a 32.768 kHz crystal oscillator and up to 3 MHz SPI clock at 1.8 V. Ideal for portable and IoT time-keeping designs requiring low-power operation.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 10
- Lifecycle
- ACTIVE
- Datasheet
- MCP79511-I/MS Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.1100(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 MCP79511-I/MS?
- SPI interface real-time clock with 64-byte battery-backed SRAM and interrupt output in 10-pin MSOP package
- Wide supply range from 1.8 V to 5.5 V with 3 MHz SPI clock operation at 1.8 V enabling ultra-low-power designs
- Built-in power-fail detection and automatic battery switchover for uninterrupted timekeeping during main supply outages
What is MCP79511-I/MS used for?
The MCP79511-I/MS is well suited for portable medical devices, IoT sensor nodes, and data loggers that require accurate real-time clock functionality with minimal PCB footprint. Its 64-byte SRAM and interrupt capability make it an efficient companion for microcontrollers in wearable electronics, smart meters, and industrial monitoring systems needing time-stamped event logging.
What are the specifications of MCP79511-I/MS?
| Manufacturer Package Code | MSOP-10 |
| Factory Lead Time | 6Weeks |
| YTEOL | 13 |
| Additional Feature | ALSO OPEARTES AT 1.8V MIN SUPPLY AT 3MHZ CLOCK FREQ |
| Clock Frequency-Max | 0.032MHz |
| Information Access Method | SERIAL(SPI) |
| Interrupt Capability | Y |
| JESD-30 Code | S-PDSO-G10 |
| JESD-609 Code | e3 |
| On Chip Data RAM Width | 8 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP10,.19,20 |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| RAM (words) | 64 |
| Screening Level | TS 16949 |
| Supply Current-Max | 5mA |
| Supply Voltage-Max | 3.6V |
| Supply Voltage-Min | 1.8V |
| Supply Voltage-Nom | 3V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.5mm |
| Terminal Position | DUAL |
| Time-Min | 1/100 SECOND |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| Volatile | NO |
| uPs/uCs/Peripheral ICs Type | TIMER, REAL TIME CLOCK |
| ## MCP79511-I/MS Alternates Showing results | Image |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 2 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Thailand |
Where can I find the MCP79511-I/MS datasheet?
MCP79511-I/MS Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP79511-I/MS?
Compatible alternatives and drop-in replacements for MCP79511-I/MS:
suggested
Frequently Asked Questions
What SPI clock frequency does MCP79511-I/MS support at 1.8 V supply?
The MCP79511-I/MS supports a maximum SPI clock frequency of 3 MHz when operating from a 1.8 V supply, and up to 10 MHz at higher supply voltages up to 5.5 V. This enables fast register reads and writes in low-power microcontroller systems. The 32.768 kHz crystal oscillator provides accurate timekeeping independently of the SPI clock speed in portable IoT designs.
For which embedded designs is MCP79511-I/MS a strong choice over I2C-based RTCs?
The MCP79511-I/MS with SPI interface is preferred in multi-device SPI bus designs where a single chip-select line simplifies firmware versus address-conflict-prone I2C RTCs. Its 64-byte SRAM stores 64 bytes of user data alongside time registers, and the interrupt output supports wake-on-alarm in battery-powered data loggers operating from 1.8 V to 5.5 V rails.
What is the package and pin count of MCP79511-I/MS and how does it affect board space?
The MCP79511-I/MS uses an MSOP-10 package (10 pins, approximately 3 mm x 3 mm footprint), one of the most compact RTC packages available. This 10-pin small-outline profile makes it suitable for wearable and handheld designs where every square millimeter of PCB area is critical, while still providing SPI, interrupt, battery switchover, and 64-byte SRAM functionality in a single 10-pin chip.
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| Qty. | Unit Price | Ext. Price |
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| 1+ | $1.3900 | $1.39 |
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| 1000+ | $1.1400 | $1140.00 |
| 5000+ | $1.1100 | $5550.00 |
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