Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Memory Type:	Non-Volatile
Memory Format:	EEPROM
Technology:	EEPROM
Memory Size:	256Kb (32K x 8)
Clock Frequency:	20MHz
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:	CAT25256

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Memory: CAT25256YI-GT3 Application Field And Working Principle

Introduction

CAT25256YI-GT3 is a series of I2C−compatible, 16Kb Serial EEPROMs. It includes an EEPROM memory array organized as 2048 pages of 8 bytes each, an I2C−compatible two-wire interface, an on-board oscillator, EEPROM write-protect features, and a four-level hardware write-protect scheme. This type of memory has broad application fields such as automotive, industrial and consumer products, and can be used to store data in products and devices.

Applications

CAT25256YI-GT3 has wide application fields, including:

• Automotive: CAT25256YI-GT3 can be used in vehicles and products related to auto cars, such as engine control, safety systems, and navigation systems.
• Industrial: This type of memory is suitable for industrial control equipment and robots, etc.
• Consumer products: It can be used in production and sales of audio, video and other consumer products.
• Peripherals: Besides storing device data, CAT25256YI-GT3 can be used in device peripherals such as printers, scanners, and monitors.

Product Features

• The memory array is organized in 2048 pages each containing 8 bytes.
• A two-wire configurable I2C-compatible interface is integrated in the IC.
• The maximum clock frequency of the I2C interface is limited to 800kHz.
• High reliability EEPROM non-volatility memory with a minimum write/erase cycle of 1,000 cycles.
• Four write protect bits can be used with independent 1Kb segment write protection.
• Data retention is guaranteed for a period of 10 years.
• Industry standard PCB packages.

Working Principle

CAT25256YI-GT3 features a two-wire I2C-compatible interface. This interface is used for communication between the device and a host system or controller. The interface consists of a Serial Clock (SCL) line and a Serial Data (SDA) line. The SCL line is used to clock in data and provide control signals, while the SDA is used for both data and control information.The device also incorporates an on-board oscillator. This oscillator enables the device to clock-in data and addresses when controlled by a serial clock. The oscillator frequency is factory-fixed at 4.7kHz, but can be changed by external resistor R10 and capacitor C10.The device also has a write-protect feature that provides protection against unintentional writing or erasing of data. This feature can be enabled through the write-protect pin (WP) or it can also be programmed to provide four levels of write protection.

Conclusion

In conclusion, CAT25256YI-GT3 is a 16Kb Serial EEPROM that is I2C-compatible and suitable for many applications. It features an on-board oscillator, a write-protect feature, and a four-level hardware write-protect scheme for safety.

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