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The ATMEL AT25128N is a 128-Kbit (16K x 8) Serial EEPROM with the following specifications, descriptions, and features:

Manufacturer: ATMEL (now part of Microchip Technology)

Part Number: AT25128N

Specifications:

• Memory Size: 128 Kbit (16,384 x 8 bits)
• Interface: SPI (Serial Peripheral Interface)
• Operating Voltage: 2.7V to 5.5V
• Clock Frequency: Up to 10 MHz
• Write Time: 5 ms (typical)
• Endurance: 100,000 write cycles
• Data Retention: 100 years
• Operating Temperature Range: -40°C to +85°C
• Package Options: 8-lead PDIP, 8-lead SOIC, and others

Descriptions:

• The AT25128N is a low-power, high-performance EEPROM with SPI-compatible serial communication.
• It supports both Byte Write and Page Write (up to 64 bytes per page).
• Features a Write Protect (WP) pin for hardware data protection.
• Includes a Hold (HOLD) pin to pause communication without resetting the serial interface.

Features:

• SPI Modes 0 & 3 Support
• Software & Hardware Write Protection
• Self-Timed Write Cycle
• Low Power Consumption:
• Active Read Current: 3 mA (typical at 5V)
• Standby Current: 6 µA (typical)
• Industrial Temperature Range (-40°C to +85°C)
• RoHS Compliant

This EEPROM is commonly used in embedded systems, automotive electronics, industrial controls, and consumer devices for non-volatile data storage.