MCP79510T-I/MN

The MCP79510T-I/MN is Microchip’s I2C real-time clock/calendar with battery-backed nonvolatile memory. It keeps accurate time (seconds to years) and can generate alarms or periodic square-wave outputs, making it suitable for time-stamping, scheduling, and data logging in embedded systems. It uses a two-wire I2C interface, operates from a low-voltage supply, and supports a battery-backup mode to retain time and data during power loss. The -I suffix indicates industrial temperature range; -MN denotes the package variant (lead-free/multi-pack option, typically an 8-pin small outline package). Typical applications include timestamping events, power-failure timekeeping, and time-based control in microcontroller projects. For exact RAM size, register map, alarm capabilities, and package details, consult the MCP79510T-I/MN datasheet.

Key features of MCP79510T-I/MN:
- I2C real-time clock with calendar (seconds to year) and alarm/timer functions
- 32.768 kHz oscillator input; supports external crystal
- Battery-backup operation with automatic switchover
- Trickle-charge capability to charge a backup supply (coin cell or supercap)
- 2.5 V to 5.5 V operation; industrial temperature range (-40°C to +85°C)
- I2C interface up to 400 kHz (Fast-mode); standard 2-wire interface
- Programmable square-wave output and multiple interrupt/alarm outputs
- 64 bytes of on-chip SRAM for data logging/storage
- 12/24-hour formats with leap-year handling
- Small package options suitable for low-pin-count designs
Note: exact RAM size and alarm count may vary by variant; this summary reflects typical MCP79510 family features.

- Pin count: 8 pins (8-pin package, e.g., SOIC/MSOP).
- Function: I2C-based voltage supervisor with watchdog and reset output. It monitors VDD, provides a system reset (POR) to a microcontroller, and allows configuration/status reading via the I2C interface.

- Manufacturer: Microchip Technology Inc.
- What kind of company: A US-based semiconductor company that designs, manufactures, and sells embedded control solutions, including microcontrollers, analog devices, and memory. Headquarters in Chandler, Arizona; founded in 1989 (spin-off from General Instrument); publicly traded on NASDAQ (ticker: MCHP).

Key application areas for MCP79510T-I/MN:
- Microcontroller/processor reset supervision with power-on reset
- Brown-out protection and reliable reset during Vcc fluctuations
- Safe startup/shutdown sequencing for digital ICs (MCUs, DSPs, FPGAs)
- Voltage monitoring in embedded systems and data-logging devices
- Battery-powered/low-quiescent-current applications
- Automotive, industrial, consumer electronics, medical and telecom equipment requiring dependable reset signaling
- IoT sensors, wearables and other electronics needing simple, robust supply supervision

8-pin narrow-body SOIC (surface-mount) package.