AT49F040-90TI

Product Overview

Category

AT49F040-90TI belongs to the category of Flash Memory ICs.

Use

It is primarily used for storing and retrieving digital information in electronic devices.

Characteristics

• Non-volatile memory: Retains data even when power is turned off.
• High storage capacity: The AT49F040-90TI has a storage capacity of 4 megabits (512 kilobytes).
• Fast access time: It offers a fast access time of 90 nanoseconds.
• Low power consumption: Consumes minimal power during operation.
• Wide operating voltage range: Can operate within a voltage range of 2.7V to 5.5V.

Package

The AT49F040-90TI is available in a standard Thin Small Outline Package (TSOP) with 32 pins.

Essence

The essence of AT49F040-90TI lies in its ability to provide reliable and high-capacity non-volatile memory storage for various electronic devices.

Packaging/Quantity

The AT49F040-90TI is typically packaged in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Memory Type: Flash
• Memory Size: 4 Megabits (512 Kilobytes)
• Access Time: 90 Nanoseconds
• Supply Voltage Range: 2.7V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Package Type: TSOP
• Pin Count: 32

Detailed Pin Configuration

The AT49F040-90TI has a total of 32 pins, which are assigned specific functions as follows:

1. VCC: Power supply voltage
2. A0-A18: Address inputs
3. CE: Chip enable
4. OE: Output enable
5. WE: Write enable
6. I/O0-I/O7: Data input/output
7. RESET: Reset pin
8. RP/RB: Ready/Busy output
9. NC: No connection (unused pin)

Functional Features

• High-speed data transfer: The AT49F040-90TI offers fast read and write operations, allowing for efficient data transfer.
• Sector erase capability: It supports sector-based erasure, enabling selective removal of data without affecting the entire memory.
• Hardware and software protection: The device provides mechanisms to protect stored data from accidental modification or unauthorized access.
• Low power consumption: The AT49F040-90TI is designed to minimize power consumption, making it suitable for battery-powered devices.

Advantages and Disadvantages

Advantages

• Non-volatile memory ensures data retention even during power loss.
• High storage capacity allows for ample data storage.
• Fast access time enables quick retrieval of information.
• Wide operating voltage range enhances compatibility with various systems.
• Sector erase capability provides flexibility in managing stored data.

Disadvantages

• Limited storage capacity compared to newer flash memory technologies.
• Relatively slower access time compared to some modern memory devices.
• Availability may be limited due to the introduction of newer memory technologies.

Working Principles

The AT49F040-90TI utilizes a floating gate transistor technology to store digital information. When data is written, an electrical charge is trapped in the floating gate, altering the transistor's behavior. This charge can be retained for an extended period, allowing the stored data to persist even when power is removed. During read operations, the transistor's behavior is determined by the presence or absence of charge in the floating gate, enabling the retrieval of stored information.

Detailed Application Field Plans

The AT49F040-90TI finds applications in various electronic devices, including but not limited to: - Personal computers - Mobile phones - Digital cameras - Set-top boxes - Automotive electronics - Industrial control systems

Detailed and Complete Alternative Models

1. AT49F040-90JC: Similar specifications but available in a PLCC package.
2. AT49F040-90PC: Similar specifications but available in a PDIP package.
3. AT49F040-90TU: Similar specifications but available in a TSSOP package.

These alternative models offer similar functionality and performance, providing options for different packaging requirements or compatibility with specific systems.

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