The MCP79520-I/MS from Microchip Technology is a real-time clock (RTC) Integrated Circuit with clock/calendar functions, a 64B SPI interface and a 10-MSOP package (0.118" / 3.00 mm width).
The MCP79520T-I/MS from Microchip Technology is a real-time clock (RTC) Integrated Circuit with clock/calendar functions, a 64B SPI interface and a 10-MSOP package (0.118" / 3.00 mm width).
The MCP79520T-I/MN from Microchip Technology is a real-time clock (RTC) Integrated Circuit with clock/calendar functions, 64B memory and an SPI interface, in a 10-WFDFN package with exposed pad.