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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Renesas Electronics America Inc. ISL1218IUZ

IC RTC CLK/CALENDAR I2C 8-MSOP

3.18

Renesas Electronics America Inc. ISL1218IBZ

IC RTC CLK/CALENDAR I2C 8-SOIC

3.02

Renesas Electronics America Inc. ISL1208IB8Z-T7A

IC RTC CLK/CALENDAR I2C 8-SOIC

2.89

STMicroelectronics M41T83RQA6F

IC RTC CLK/CAL I2C 16-VFQFPN

0

Maxim Integrated DS1371U+T&R

IC RTC BINARY CNT I2C 8-USOP

0

IDT, Integrated Device Technology Inc 1337AGDVGI

IC RTC CLK/CALENDAR I2C 8-TSSOP

2.8

IDT, Integrated Device Technology Inc 1339-31DCGI

IC RTC CLK/CALENDAR I2C 8-SOIC

2.78

IDT, Integrated Device Technology Inc 1337AGDCGI

IC RTC CLK/CALENDAR I2C 8-SOIC

2.66