DS1338C-3# Datasheet PDF - Maxim Integrated

The DS1338C-3# from Maxim Integrated Products is an I2C real time clock (RTC) with 56 byte NV RAM in 16 pin NSOIC package. This RTC is a low power, full BCD clock/calendar plus 56 bytes of NV SRAM. Address and data are transferred serially through an I2C interface. The clock/calendar provides seconds, minutes, hours, day, date, month and year information. The end of the month date is automatically adjusted for months with fewer than 31days, including corrections for leap year. The clock operates in either the 24/12-hour format with AM/PM indicator. It has a built-in power sense circuit that detects power failures and automatically switches to backup supply, maintaining time and date operation. It is used in office equipment (fax/printer, copier), consumer electronics (set-top box, digital recording, network appliance), medical (glucometer, medicine dispenser), telecommunications (router, switcher, server) and other utility meter, vending machine, thermostat, modem.

● Supply voltage range from 2.7V to 5.5V

● Operating temperature range from -40°C to 85°C

● 56byte, battery backed, general purpose RAM with unlimited writes

● Programmable square wave output signal

● Interfaces with most microcontrollers, I2C serial interface

● Low power operation extends battery backup run time

● UL recognized