AT25DF081A-SH-B

Product Overview

• Category: Integrated Circuit
• Use: Non-volatile Serial Flash Memory
• Characteristics: High-speed, low-power, small form factor
• Package: 8-pin SOIC (Small Outline Integrated Circuit)
• Essence: Provides non-volatile memory storage for various electronic devices
• Packaging/Quantity: Available in tape and reel packaging, quantity varies based on customer requirements

Specifications

• Memory Size: 8 Megabits (1 Megabyte)
• Interface: Serial Peripheral Interface (SPI)
• Operating Voltage: 2.7V to 3.6V
• Operating Temperature: -40°C to +85°C
• Write Endurance: 100,000 cycles
• Data Retention: 20 years
• Page Size: 256 bytes
• Sector Size: 4 kilobytes
• Erase Time: 35 milliseconds (typical)

Pin Configuration

The AT25DF081A-SH-B has the following pin configuration:

1. Chip Select (/CS)
2. Serial Clock (SCK)
3. Serial Data Input (SI)
4. Serial Data Output (SO)
5. Write Protect (/WP)
6. Hold (/HOLD)
7. VCC (Power Supply)
8. Ground (GND)

Functional Features

• High-speed data transfer using SPI interface
• Low power consumption during active and standby modes
• Sector erase and page program operations for efficient memory management
• Hardware and software write protection options
• Deep power-down mode for further power savings
• Fast read access time for quick data retrieval

Advantages and Disadvantages

Advantages: - Compact package size suitable for space-constrained applications - Wide operating voltage range allows compatibility with various systems - High endurance and long data retention ensure reliable performance - Flexible write protection options for enhanced security

Disadvantages: - Limited memory size compared to larger flash memory devices - Relatively slower erase time compared to some other flash memory chips

Working Principles

The AT25DF081A-SH-B is based on the Serial Peripheral Interface (SPI) protocol. It utilizes a combination of clock and data signals to communicate with the host microcontroller or system. The memory cells store data in a non-volatile manner, meaning the data remains even when power is removed. The SPI interface allows for high-speed data transfer between the memory and the host device.

Detailed Application Field Plans

The AT25DF081A-SH-B is widely used in various electronic devices that require non-volatile memory storage. Some common application fields include:

1. Consumer Electronics: Used in smartphones, tablets, digital cameras, and portable media players for firmware storage, data logging, and configuration settings.
2. Automotive: Employed in automotive infotainment systems, instrument clusters, and advanced driver-assistance systems (ADAS) for storing critical data and software updates.
3. Industrial Control Systems: Integrated into industrial automation equipment, control panels, and PLCs for program storage, parameter settings, and event logging.
4. Medical Devices: Utilized in medical equipment such as patient monitors, infusion pumps, and diagnostic devices for storing patient data, calibration information, and software updates.

Detailed and Complete Alternative Models

1. AT25DF321A-SH-B: 32 Megabit (4 Megabyte) version of the same flash memory chip.
2. MX25L8006E: Similar 8 Megabit serial flash memory from another manufacturer.
3. S25FL116K: 16 Megabit serial flash memory with additional features like uniform sector erase and dual/quad SPI support.

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