BUY M48T86PC https://www.utsource.net/itm/p/230143.html
5V PC REAL TIME CLOCK
The M48T86PC is a real-time clock (RTC) IC manufactured by STMicroelectronics. It is a low-power CMOS device that provides a full binary coded decimal (BCD) clock/calendar plus 56 bytes of NV SRAM.
Description:
The M48T86PC is a low-power CMOS Real-Time Clock (RTC) and calendar. It provides a full binary coded decimal (BCD) clock/calendar plus 56 bytes of NV SRAM. The clock/calendar provides seconds, minutes, hours, day, date, month, and year information. The date at the end of the month is automatically adjusted for months with fewer than 31 days, including corrections for leap year. The clock operates in either the 24-hour or 12-hour format with AM/PM indicator.
Features:
Low power CMOS technology
Full binary coded decimal (BCD) clock/calendar
56 bytes of NV SRAM
Clock/calendar provides seconds, minutes, hours, day, date, month, and year information
Date at the end of the month is automatically adjusted for months with fewer than 31 days, including corrections for leap year
Clock operates in either the 24-hour or 12-hour format with AM/PM indicator
Battery backup input for continuous timekeeping
Programmable square-wave output
Automatic power-fail detect and switch
Applications:
The M48T86PC is suitable for a wide range of applications, including:
Personal computers
Network servers
Industrial controllers
Automotive systems
Home appliances
Telecommunications systems
(For reference only)