Microchip Technology MCP795W21-I/SL

The MCP795W21-I/SL is a highly integrated Real-Time Clock/Calendar (RTCC) from Microchip Technology, designed for timekeeping in embedded systems. With its built-in 64-byte SRAM and unique ID, this device is perfect for applications requiring accurate timekeeping, data logging, and unique identification for board level security.

Key Features:

• Accuracy: The MCP795W21-I/SL offers a temperature-compensated crystal oscillator (TCXO) with a factory calibrated accuracy of ±5 ppm, ensuring precise timekeeping over a wide temperature range.
• Battery Backup: It includes a battery-switchover feature for reliable operation during power failures, which allows the device to automatically switch to battery backup and maintain timekeeping.
• Communication: This RTCC utilizes an SPI interface for communication with microcontrollers, providing a simple integration into existing designs.
• Memory: With 64 bytes of battery-backed SRAM, the MCP795W21-I/SL allows for the storage of data that must be preserved during power loss.
• Unique ID: The device comes with a factory-programmed 64-bit unique ID, which can be used for network node identification or as a key for system security.
• Package: Available in an 8-pin SOIC package, it is suitable for PCBs with limited space and requires minimal external components.
• Timekeeping: It supports leap year correction, and provides hours, minutes, and seconds in 12/24-hour formats, along with day, date, month, and year information.
• Power Consumption: Designed for low-power applications, it operates in the range of 1.8V to 5.5V, making it versatile for various power supply conditions.
• Temperature Range: The MCP795W21-I/SL operates over an industrial temperature range of -40°C to +85°C, ensuring reliable performance in harsh environments.

Applications:

The MCP795W21-I/SL is ideal for a wide range of applications, including industrial control systems, utility meters, medical devices, home automation, and any other system that requires accurate timekeeping and data logging capabilities.