Microchip TechnologyMCP7940N-I/PIC: RTC circuit
Bus Type Serial-I2CDate Format DW:DM:M:YFunctions CalendarMaximum Operating Supply Voltage 5.5V
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MCP7940N I²C Real-Time Clock/Calendars Real Time Clock Peripherals - Microchip
MCP7940N I²C Real-Time Clock/Calendars
Real Time Clock Peripherals - Microchip