Microchip Technology MCP7940N-I/SS Real-Time Clock/Calendar

The MCP7940N-I/SS is a highly integrated Real-Time Clock/Calendar (RTCC) from Microchip Technology, designed to maintain accurate timekeeping with minimal power consumption. This compact, feature-rich component is perfect for applications that require time tracking, such as in embedded systems, smart meters, industrial controllers, and consumer electronics.

Encased in a sleek SSOP-20 package, the MCP7940N-I/SS includes a battery backup input and maintains accurate timekeeping even when the main power is lost. This ensures that time-sensitive applications remain functional and accurate without interruption. The device operates over a wide voltage range, making it versatile for various electronic setups.

Key Features:

• Timekeeping: Seconds, minutes, hours, day of the week, date, month, and year with leap-year compensation valid up to 2399.
• Power Management: Low-power battery-backed operation with a battery switch-over circuit for backup power.
• Memory: 64 bytes of battery-backed SRAM and 1 Kbit of EEPROM for data storage, which is protected during low power conditions.
• Communication: I2C™ Serial Interface for easy integration into most microcontroller-based systems.
• Alarm Function: Single or multiple alarms can be set with the option to mask seconds, minutes, hours, day of the week, date, and month.
• Temperature Range: Industrial-grade temperature range (-40°C to +85°C), suitable for harsh environments.
• Frequency Output: Programmable clock output for peripheral devices.
• Digital Trimming: Digital trimming capability to compensate for crystal frequency drift.

The MCP7940N-I/SS is a reliable and cost-effective solution for applications requiring an embedded clock/calendar function. Its digital trimming feature allows for fine-tuning of the timekeeping to match the specific needs of any application. Additionally, the integrated EEPROM provides convenient data storage, which is essential for device configuration and data logging tasks.

Whether you're developing a new product or upgrading an existing system, the MCP7940N-I/SS from Microchip Technology offers a perfect blend of performance, power efficiency, and ease of use, making it an excellent choice for maintaining accurate time in your electronic projects.