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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Maxim Integrated DS1339U-2+T&R

IC RTC CLK/CALENDAR I2C 8-USOP

0.2

Maxim Integrated DS1308U-3+T

IC RTC CLK/CALENDAR I2C 8-UMAX

0.2

Epson RA-4574SA:B0 PURE SN

IC REAL TIME CLOCK/CALENDAR

0.2

Epson RX-8571SA:B0 PURE SN

IC RTC CLK/CALENDAR I2C 14-SOP

0.2

Maxim Integrated DS1339U-3+T&R

IC RTC CLK/CALENDAR I2C 8-USOP

0.2

Maxim Integrated DS1308U-18+T

IC RTC CLK/CALENDAR I2C 8-UMAX

0.2

Renesas Electronics America Inc. ISL12026AIVZ-T

IC RTC CLK/CALENDAR I2C 8-TSSOP

0.2

Renesas Electronics America Inc. ISL12026AIBZ-T

IC RTC CLK/CALENDAR I2C 8-SOIC

0.2