Real Time Clocks

Real Time Clocks (RTCs) provide time and/or date information in almost any electronic device which needs to keep accurate time. The clock types are binary counter, clock/calendar/supervisor, elapsed time counter, phantom time chip, portable system controller, temperature recorder, time event recorder, and timer clock peripheral.  They contain memory sizes ranging from 2 B to 2 MB and have interface options of I2C, Parallel, Serial, SPI, 1-Wire, 2-Wire, 3-Wire, and 4-Wire.

Part Number Manufacturer Description Quantity Price Option
MCP79411-I/SN Microchip Technology IC RTC CLK/CALENDAR I2C 8-SOIC 25264 $1.01
MCP79410-I/ST Microchip Technology IC RTC CLK/CALENDAR I2C 8-TSSOP 4574 $0.97
MCP79410-I/SN Microchip Technology IC RTC CLK/CALENDAR I2C 8-SOIC 1054 $0.93
M41T0M6F STMicroelectronics IC RTC CLK/CALENDAR I2C 8-SOIC 11625 $0.00
M41T62Q6F STMicroelectronics IC RTC CLK/CALENDAR I2C 16-QFN 14920 $0.00
MCP79410T-I/MS Microchip Technology IC RTC CLK/CALENDAR I2C 8-MSOP 3144 $0.00
AB1815-T3 Abracon LLC. IC RTC CLK/CALENDAR SPI 16-QFN 5774 $0.00
MCP7940N-I/MS Microchip Technology IC RTC CLK/CALENDAR I2C 8-MSOP 2733 $0.80
AB0805-T3 Abracon LLC. IC RTC CLK/CALENDAR I2C 16-QFN 21152 $1.73
AB0815-T3 Abracon LLC. IC RTC CLK/CALENDAR SPI 16-QFN 72950 $0.00