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The AT26DF081A-SU is a serial flash memory device manufactured by Atmel (now part of Microchip Technology). Below are its key specifications, descriptions, and features:

Specifications:

• Memory Size: 8 Mbit (1 MB)
• Interface: SPI (Serial Peripheral Interface)
• Operating Voltage: 2.7V – 3.6V
• Speed:
• Up to 70 MHz clock frequency
• Sector Architecture:
• Uniform 4 KB sectors (256 sectors total)
• 32 KB blocks (32 blocks total)
• 64 KB blocks (16 blocks total)
• Page Size: 256 bytes
• Endurance: 100,000 write cycles per sector
• Data Retention: 20 years
• Operating Temperature Range: -40°C to +85°C
• Package: 8-lead SOIC (150-mil)

Descriptions:

The AT26DF081A-SU is a high-performance SPI-compatible flash memory designed for applications requiring fast read/write operations and low power consumption. It supports single, dual, and quad SPI modes for enhanced performance. The device includes software and hardware protection features to secure data integrity.

Features:

• SPI Modes: Supports Standard SPI, Dual SPI, and Quad SPI
• Flexible Erase Options:
• 4 KB sector erase
• 32 KB block erase
• 64 KB block erase
• Full chip erase
• Advanced Security Features:
• Software write protection (per sector or block)
• Hardware write protection (WP# pin)
• Deep power-down mode (ultra-low standby current)
• Fast Read Performance:
• 70 MHz clock speed (standard SPI)
• 35 MHz clock speed (dual/quad SPI)
• Low Power Consumption:
• Active current: 15 mA (typical)
• Standby current: 25 µA (typical)
• Deep power-down current: 1 µA (typical)
• Industrial-Grade Reliability:
• 100,000 program/erase cycles
• 20-year data retention

This device is commonly used in embedded systems, automotive, industrial, and consumer electronics where reliable non-volatile storage is required.

*(Note: For the latest datasheet, refer to Microchip’s official documentation.)*