25AA128-I/ST

Series:	--
Packaging:	Tube
Part Status:	Active
Memory Type:	Non-Volatile
Memory Format:	EEPROM
Technology:	EEPROM
Memory Size:	128Kb (16K x 8)
Clock Frequency:	10MHz
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:	25AA128

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25AA128-I/ST Application Field and Working Principle

Introduction

The 25AA128-I/ST is an 8-pin, low-voltage CMOS serial EEPROM memory device. It is the latest memory device in Microchip Technology’s line of Serial Electrically Erasable Programmable Read-Only Memory (EEPROM) devices. The 25AA128-I/ST provides a low-cost, low-voltage, high-density solution for data storage and retrieval in applications systems. It is designed to provide reliable, nonvolatile storage of data in a wide range of applications and provides various options for memory management and system integration.

Application Field of 25AA128-I/ST

The 25AA128-I/ST is used in a variety of applications where limited memory and the need for reliable nonvolatile storage are important. It is used in industrial, automotive, medical and consumer applications. In industrial applications, it is used to store settings, configuration information and data in programmable logic controllers (PLCs) and programmable automation controllers (PACs). In automotive applications, the 25AA128-I/ST is used to store onboard diagnostic data and to provide reliable storage for infotainment systems or other system information. In medical applications, the 25AA128-I/ST is used to store device configuration and patient data, as well as to provide long-term data storage in device registries. Finally, in consumer applications, the 25AA128-I/ST is used to store personal information and in gaming systems, such as gaming console controllers, to store gaming data.

Working Principle of 25AA128-I/ST

The 25AA128-I/ST is an 8-pin Serial Electrically Erasable Programmable Read-Only Memory (EEPROM) device, which utilizes the same industry standard serial peripheral interface. It is internally organized into 1024 bytes which are configured in 32 pages of 32 bytes each. It is accessed using a 3-wire serial protocol, using a small 8-pin package. The 25AA128-I/ST is capable of operating down to 1.8V, allowing for the use in low voltage systems. The operation of the 25AA128-I/ST memory device is controlled by the 3-wire serial protocol. The protocol is composed of four commands-Read, Write, Erase, and Wake-up. The Read command is used to read data from the memory device. The Write command is used to write data to the memory device. The Erase command is used to erase one or multiple pages of the memory. The Wake-up command is used to put the device into low power wait mode, or to resume communication after power saving.The 25AA128-I/ST has a 128-bit data buffer used to hold data which is to be written to or read from the memory. The data is first transferred to or from the data buffer before being written to or read from the memory device. The device operates in both sequential and random modes, which can be set using the appropriate commands. The device also includes a mechanism to protect certain areas of the memory device against write or erase operations.

Conclusion

The 25AA128-I/ST is a low-voltage, high-density serial EEPROM memory device. It is used in a variety of applications where limited memory and the need for reliable nonvolatile storage are important. The operation of the 25AA128-I/ST is controlled by the 3-wire serial protocol, which includes four commands:Read, Write, Erase, and Wake-up. The device also includes a 128-bit data buffer, along with a mechanism to protect certain areas of the memory device against write or erase operations. The 25AA128-I/ST is an ideal solution for applications that require reliable and nonvolatile data storage.

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