SemiconductorsThe PCF8583T/5,518 Real Time Clock CLK/CALENDAR 240X8 RAM chip manufactured by NXP Semiconductors is an integrated electronic part specifically designed as a clock/calendar. The part contains a 240x8 random-access memory (RAM) and keeps track of the minute, hour, day, date, and month with leap year compensation valid up to 2800. It is a universal programmable clock/calendar with a low current consumption of only 95µA/MHz. With an I2C-bus interface or 8-bit microcontroller bus, the PCF8583T/5,518 allows read and write access to the RAM and clock and calendar date registers. The chip is available in a 8-pin DIP package. This part is suitable for use in applications such as many consumer and industrial products, intelligent/programmable remote controls, timer-based applications and similar.