25LC320AX-I/ST

Series:	--
Packaging:	Tube
Part Status:	Active
Memory Type:	Non-Volatile
Memory Format:	EEPROM
Technology:	EEPROM
Memory Size:	32Kb (4K x 8)
Clock Frequency:	10MHz
Write Cycle Time - Word, Page:	5ms
Memory Interface:	SPI
Voltage - Supply:	2.5 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:	25LC320AX

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25LC320AX-I/ST Memory

The 25LC320AX-I/ST is a Flash memory device developed by Microchip Technology, Inc. It is based on the industry-standard Serial Peripheral Interface (SPI). This device is mainly used for general purpose non-volatile storage, such as storing application and data in small embedded systems. The 25LC320AX-I/ST is a 32-Kbyte memory device, similar to other models of the 25LC family.

Application Field

The 25LC320AX-I/ST can be used in applications such as data logging, storing user settings and preferences, in data buffering and management systems, and in data storage for high-speed devices like the control boards in consumer electronics and medical devices. It is also ideally suited for applications with high temperature and humidity, due to its operating temperature range of -40 to +85 degrees Celsius and its superior performance in highly humid environments.

Working Principle

25LC320AX-I/ST is a non-volatile, serial peripheral memory device. It interfaces with microcontrollers and other devices in an SPI compatible low-power mode. It can be operated in either single or dual slave, serial peripheral device configuration. Access to the 25LC320AX-I/ST is accomplished by providing a unique command after initiating the serial clock and frame transfers as specified by the SPI protocol. The 25LC320AX-I/ST is composed of 32Kbits of non-volatile memory organized as 256 pages of 128 x 8 bits each. It is designed with an on board write control logic which enables a page to be written in one, two or four-byte segments. Data stored in the 25LC320AX-I/ST is non-volatile, meaning it will retain its value even when there is an absence of power. It can be powered down while in use, and can still retain its data and settings. The device is programmed and read with commands as specified in the Serial Peripheral Interface (SPI) protocol. This protocol allows the microcontroller or other peripheral device to access the memory device in eight-bit bytes. With buffered write operations, up to 64 bytes of data can be written with one operation. With buffered read operations, up to 160 bytes of data can be read with one operation.

Conclusion

The 25LC320AX-I/ST is an ideal memory device for applications in which data needs to be stored for long periods of time. It is suitable for embedded systems with temperatures and humidities that may vary significantly. Additionally, it is programmed and read using the Serial Peripheral Interface (SPI) protocol. This protocol allows for buffered operations, with reads up to 160 bytes and writes up to 64 bytes at a time. The 25LC320AX-I/ST is a robust, reliable, and cost-effective solution for any embedded application requiring non-volatile data storage.

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