The MCP795W11-I/ST from Microchip Technology is a real-time clock/calendar Integrated Circuit with 64B SPI interface, in a 14-TSSOP (0.173", 4.40 mm width) package.
The MCP795W11-I/SL from Microchip Technology is a real-time clock/calendar Integrated Circuit with 64B SPI interface, in a 14-SOIC (0.154", 3.90 mm width) package.
The MCP795W11T-I/ST from Microchip Technology is a real-time clock Integrated Circuit with clock/calendar, 64B memory and SPI interface in a 14-TSSOP (0.173", 4.40 mm width) package.