25AA640X-I/ST

Series:	--
Packaging:	Tube
Part Status:	Active
Memory Type:	Non-Volatile
Memory Format:	EEPROM
Technology:	EEPROM
Memory Size:	64Kb (8K x 8)
Clock Frequency:	1MHz
Write Cycle Time - Word, Page:	5ms
Memory Interface:	SPI
Voltage - Supply:	1.8 V ~ 5.5 V
Operating Temperature:	-40°C ~ 85°C (TA)
Mounting Type:	Surface Mount
Package / Case:	8-TSSOP (0.173", 4.40mm Width)
Supplier Device Package:	8-TSSOP
Base Part Number:	25AA640X

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Introduction

The 25AA640X-I/ST (25AA640X) is a non-volatile serial SRAM (Static Random Access Memory) manufactured by Texas Instruments Corporation. It is used for various applications and can be used for storing data that must be retained even when there is no power source. It is available in several varieties with different memory sizes and data access protocols.

Application Field

The 25AA640X can be used in a variety of applications. It can be used in data logging and data acquisition systems, data logging sensors, industrial controllers, and medical devices. It is also used for security systems, surveillance systems, and for storing configuration data for connected devices.

Working Principle

The 25AA640X has two components: an individual memory core and a serial interface. The memory core consists of 6,400 bits of non-volatile SRAM organized as 800 8-bit registers. The individual registers can be accessed through a simple serial interface. The serial interface is used to read and write data to the memory core.The 25AA640X can be used in either a stand-alone or a networked configuration. In a stand-alone configuration, the 25AA640X connects directly to the host processor via a serial interface. In a networked configuration, the 25AA640X is connected to an external serial bus, such as I²C, SPI, or RS-485.The 25AA640X is programmed to address specific registers. Each register can be read or written individually or in blocks of up to 128 bytes. The 25AA640X is capable of reading and writing at speeds of up to 400 KHz.

Conclusion

The 25AA640X-I/ST is a non-volatile serial SRAM memory. It is available in several varieties with different memory sizes and data access protocols. It can be used in a stand-alone configuration or in a networked configuration. The 25AA640X is ideal for storing data that must be retained even when there is no power source.

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