FM24C64B-G

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Memory is an integral part of modern electronic circuits and systems. It plays a vital role in storing, retaining, and manipulating information. Over the years, many types of memory technologies have emerged and advanced, such as ROM (read-only memory), RAM (random-access memory) and flash memory to name a few. FM24C64B-G is an example of flash memory and this paper will discuss its application fields and working principle.

FM24C64B-G Application Fields

FM24C64B-G is a low-power 8Kx8 (8192x8) 1.8V serial CMOS EEPROM configured internally into 256-byte words. Its small package and low-pin count allows it to be easily implemented into most applications. Furthermore, its low-power consumption features make it an ideal choice for applications where power consumption is a priority. Its high endurance and guaranteed data retention make it a great fit for long-term industrial and commercial applications. Common application fields include but are not limited to automotive industry, medical device, home appliances, and small-scale embedded systems.

FM24C64B-G Working Principle

FM24C64B-G is a serial EEPROM chip and its data transmission is based on a serial two-wire protocol—I2C interface. The whole chip is divided into 256-byte words which can be accessed through eight address bits. The first seven bits of the address determines which word to be accessed and the eighth bit determines the read or write operation. With a 1MHz clock rate, it supports up to a 400 kHz I2C fast mode.

When writing to the chip, an eight-bit write command is used along with the eight-bit address and eight-bit data. The address is valid first and then the data is loaded in the addressed memory location. Alternatively, when reading from the chip, an eight-bit read command is used along with the eight-bit address. This will read the data in the addressed memory location.

The write operation typically takes up to 5ms and can be used to program up to 8K bits of data. It has a 10K minimum erase/program cycle endurance, meaning it can endure up to 10K write cycles. Additionally, the data retention of the chip is rated up to 100 years.

Conclusion

In conclusion, FM24C64B-G is a serial EEPROM chip designed for low-power industrial and commercial applications. Its small package and low-pin count allows its integration into most applications. It requires two-wire I2C interface for the data transmission, with a 1MHz clock rate and 400 kHz fast mode. It has a 10K minimum erase/program cycle endurance and 100 years maximum data retention.

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