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 MCP79522T-I/MS

IC RTC CLK/CALENDAR SPI 10-MSOP

1.16

Microchip Technology MCP79522T-I/MN

IC RTC CLK/CALENDAR SPI 10-TDFN

1.16

Microchip Technology MCP79521T-I/MS

IC RTC CLK/CALENDAR SPI 10-MSOP

1.16

Microchip Technology MCP79521T-I/MN

IC RTC CLK/CALENDAR SPI 10-TDFN

1.16

Diodes Incorporated PT7C43190WE

IC RTC CALENDAR 3-WIRE SER 8SOIC

1.16

Diodes Incorporated PT7C43390LE

IC RTC CLK/CALENDAR I2C TSSOP

1.15

Diodes Incorporated PT7C43390WE

IC RTC LOW PWR CONSUMPTION I2C

1.13

Renesas Electronics America Inc. ISL12058IUZ

IC RTC CLK/CALENDAR I2C 8-MSOP

1.12