What is X1240V8?

This is Real Time Clock/Calendar with EEPROM.

EEPROM stands for Electrically Erasable Programmable Read-Only Memory. It is a type of non-volatile memory that can be electrically erased and reprogrammed. EEPROMs are used to store small amounts of data that need to be saved even when the power is turned off, such as the settings of an electronic device or a small amount of code that needs to be retained after a power cycle.

[PDF] Complete Technical Details can be found in the X1240V8 datasheet provided at this page.

Summary in PDF File

Preliminary Information 16K X1240 Real Time Clock Calendar with EEPROM DESCRIPTION 2 Wire RTC FEATURES 2 Wire Interface interoperable with I2C 400kHz data transfer rate Secondary Power Supply Input with internal switch over circuitry Year 2000 Compliant 2K bytes of EEPROM 64 Byte Page Write Mode 3 bit Block Lock Low Power CMOS 1 A Operating Current 3mA Active Current during Program 400 A Active Current during Data Read Single Byte Write Capability Typical Nonvolatile Write Cycle Time 5ms High Reliability 1 000 000 Endurance Cycles Guaranteed Data Retention 100 Years Small Package Options 8 Lead SOIC Package 8L TSSOP Package The X1240 is a Real Time Clock with clock calendar circuits The dual port clock register allows the clock to operate without loss of accuracy even during read and write operations The clock calendar provides functionality that is controllable and readable through a set of registers The clock using a low cost 32 768kHz crystal input accurately tracks the time in seconds minutes hours date day month and years It has leap year correction automatic adjustment for the year 2000 and months with less than 31 days The device offers a backup power input pin

Datasheet Download (PDF)

[ Detailed Data ]

EEPROMs are similar to EPROMs (Erasable Programmable Read-Only Memory) in that they are both non-volatile memory that can be programmed, but EEPROMs can be reprogrammed electrically, while EPROMs must be erased using ultraviolet light before they can be reprogrammed.

Manufacturers : Xicor

XICOR - X1240V8 Datasheet PDF


Real Time Clock/Calendar with EEPROM

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