AT25SF321-SHD-B

Product Overview

• Category: Integrated Circuit (IC)
• Use: Non-volatile Serial Flash Memory
• Characteristics: High-speed, low-power, small form factor
• Package: SOP (Small Outline Package)
• Essence: Reliable storage solution for various electronic devices
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Memory Size: 32 Megabits (4 Megabytes)
• Interface: Serial Peripheral Interface (SPI)
• Operating Voltage: 2.7V to 3.6V
• Operating Temperature: -40°C to +85°C
• Write Protection: Software and Hardware options available
• Data Retention: Up to 20 years
• Erase/Program Cycles: 100,000 cycles

Pin Configuration

The AT25SF321-SHD-B has a total of 8 pins:

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 with SPI interface
• Low power consumption for extended battery life
• Flexible write protection options for data security
• Small form factor suitable for space-constrained designs
• Wide operating temperature range for versatile applications

Advantages

• Fast read/write operations enhance overall system performance
• Low power consumption extends battery life in portable devices
• Compact package size allows for integration in various designs
• Reliable data retention ensures long-term storage integrity
• Versatile write protection options provide enhanced security

Disadvantages

• Limited memory capacity compared to larger flash memory devices
• Higher cost per megabyte compared to traditional storage solutions
• Requires additional circuitry for proper interfacing with the host system

Working Principles

The AT25SF321-SHD-B utilizes the Serial Peripheral Interface (SPI) to communicate with the host system. It stores data in non-volatile memory cells, which retain information even when power is disconnected. The SPI interface allows for high-speed data transfer between the IC and the host, enabling efficient read and write operations.

Detailed Application Field Plans

The AT25SF321-SHD-B is widely used in various electronic devices, including but not limited to:

1. Consumer Electronics: Smartphones, tablets, digital cameras
2. Automotive: Infotainment systems, instrument clusters
3. Industrial: Internet of Things (IoT) devices, control systems
4. Medical: Patient monitoring devices, diagnostic equipment
5. Communication: Routers, modems, network switches

Detailed Alternative Models

1. AT25SF641-SHD-B: 64 Megabit (8 Megabyte) version of the same series
2. AT25SF128A-SHD-B: 128 Megabit (16 Megabyte) version with extended capacity
3. AT25SF256-SHD-B: 256 Megabit (32 Megabyte) version for higher storage requirements

These alternative models offer increased memory capacity while maintaining similar characteristics and functionality.

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