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.

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Microchip Technology MCP795B10-I/SL

IC RTC CLK/CALENDAR SPI 14-SOIC

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Microchip Technology MCP795B20T-I/ST

IC RTC CLK/CALENDAR SPI 14-TSSOP

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Renesas Electronics America Inc. ISL12027AIV27Z-T

IC RTC CLK/CALENDAR I2C 8-TSSOP

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IDT, Integrated Device Technology Inc 1337AGDVGI8

IC RTC CLK/CALENDAR I2C 8-TSSOP

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IDT, Integrated Device Technology Inc 1337AGDCGI8

IC RTC CLK/CALENDAR I2C 8-SOIC

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IDT, Integrated Device Technology Inc 1337AGCSRGI8

IC RTC CLK/CALENDAR I2C 16-SOIC

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IDT, Integrated Device Technology Inc 1337AGCSRGI

IC RTC CLK/CALENDAR I2C 16-SOIC

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Maxim Integrated MAX31342EWA+

IC RTC CLK/CALENDAR I2C 8WLP

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