AT25256A-10CI-2.7

Basic Information Overview

Category: Integrated Circuit (IC)

Use: Data Storage

Characteristics: - Non-volatile memory - Serial EEPROM (Electrically Erasable Programmable Read-Only Memory) - 256 Kbit (32 Kbyte) capacity - 10 MHz clock frequency - Industrial temperature range (-40°C to +85°C) - 2.7V to 5.5V operating voltage

Package: 8-lead SOIC (Small Outline Integrated Circuit)

Essence: AT25256A-10CI-2.7 is a serial EEPROM IC used for non-volatile data storage in various electronic devices.

Packaging/Quantity: The AT25256A-10CI-2.7 is typically sold in reels containing multiple units.

Specifications

• Memory Capacity: 256 Kbit (32 Kbyte)
• Clock Frequency: 10 MHz
• Operating Voltage: 2.7V to 5.5V
• Temperature Range: -40°C to +85°C
• Interface: Serial Peripheral Interface (SPI)
• Write Endurance: 1,000,000 cycles
• Data Retention: 100 years
• Package Type: 8-lead SOIC

Detailed Pin Configuration

The AT25256A-10CI-2.7 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. VCC (Power Supply)
7. Ground (GND)
8. Hold (/HOLD)

Functional Features

• High-speed SPI interface for fast data transfer.
• Low power consumption during standby and active modes.
• Hardware write protection using the Write Protect (/WP) pin.
• Hold (/HOLD) pin allows pausing serial communication without losing data.
• 32-byte page write mode for efficient programming.

Advantages and Disadvantages

Advantages: - Compact size and low power consumption make it suitable for portable devices. - High-speed data transfer enables quick read/write operations. - Wide operating voltage range allows compatibility with various systems. - Long data retention period ensures reliable storage.

Disadvantages: - Limited storage capacity compared to larger EEPROMs or other memory technologies. - Serial interface may require additional circuitry for parallel data access.

Working Principles

The AT25256A-10CI-2.7 operates based on the principles of EEPROM technology. It uses a floating gate transistor structure to store data electrically. The data can be written, read, and erased electronically through the SPI interface. The IC utilizes a clock signal (SCK) to synchronize data transfer between the device and the host microcontroller.

Detailed Application Field Plans

The AT25256A-10CI-2.7 is widely used in various electronic devices that require non-volatile data storage, such as: - Consumer electronics (e.g., smartphones, tablets, digital cameras) - Automotive systems (e.g., infotainment systems, engine control units) - Industrial equipment (e.g., measurement devices, control systems) - Medical devices (e.g., patient monitors, diagnostic equipment)

Detailed and Complete Alternative Models

1. AT25080A-10PU-2.7: 8 Kbit (1 Kbyte) capacity, DIP package, 2.7V to 5.5V operating voltage.
2. AT25128A-10PI-2.7: 128 Kbit (16 Kbyte) capacity, PDIP package, 2.7V to 5.5V operating voltage.
3. AT25512B-10PU-2.7: 512 Kbit (64 Kbyte) capacity, DIP package, 2.7V to 5.5V operating voltage.

These alternative models offer different memory capacities and package options while maintaining compatibility with the same operating voltage range.

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