AT27C1024-90VI

Product Overview

Category

AT27C1024-90VI belongs to the category of programmable read-only memory (PROM) chips.

Use

This product is commonly used in electronic devices for storing permanent data that cannot be modified or erased. It provides non-volatile memory storage, making it ideal for applications where data integrity is crucial.

Characteristics

• Non-volatile: The stored data remains intact even when power is removed.
• High capacity: The AT27C1024-90VI has a capacity of 1,048,576 bits (128 kilobytes).
• Fast access time: With a speed rating of 90 nanoseconds, it offers quick data retrieval.
• Low power consumption: This chip operates efficiently, consuming minimal power.
• Durable: The AT27C1024-90VI is designed to withstand harsh environmental conditions.

Package and Quantity

The AT27C1024-90VI is available in a 40-pin dual in-line package (DIP). It is typically sold in quantities of one unit or multiples thereof.

Specifications

• Capacity: 1,048,576 bits (128 kilobytes)
• Access Time: 90 nanoseconds
• Supply Voltage: 5 volts
• Operating Temperature Range: -40°C to +85°C
• Package Type: 40-pin DIP

Pin Configuration

The AT27C1024-90VI follows the standard pin configuration for PROM chips:

__ __ A16 |1 U 40| Vcc A14 |2 39| A15 A12 |3 38| A13 A7 |4 37| A8 A6 |5 36| A9 A5 |6 35| A11 A4 |7 34| CE A3 |8 33| OE A2 |9 32| WE A1 |10 31| I/O0 A0 |11 30| I/O1 GND |12 29| I/O2 I/O7|13 28| I/O3 I/O6|14 27| I/O4 I/O5|15 26| NC NC |16 25| NC NC |17 24| NC NC |18 23| NC NC |19 22| NC NC |20 21| NC -- --

Functional Features

• Easy programming: The AT27C1024-90VI can be programmed using standard PROM programming equipment.
• High reliability: It offers excellent data retention and endurance, ensuring long-term reliability.
• Compatibility: This chip is compatible with a wide range of microcontrollers and other digital devices.
• Versatility: The AT27C1024-90VI can be used in various applications, including embedded systems, automotive electronics, and consumer electronics.

Advantages and Disadvantages

Advantages

• Non-volatile memory ensures data integrity.
• High capacity allows for storing large amounts of data.
• Fast access time enables quick retrieval of information.
• Low power consumption prolongs battery life in portable devices.
• Durable design withstands harsh environmental conditions.

Disadvantages

• Data cannot be modified or erased once programmed.
• Limited storage capacity compared to other memory technologies.
• Relatively slower access time compared to modern memory technologies.

Working Principles

The AT27C1024-90VI operates based on the principle of electrical charge trapping. During programming, electrical charges are trapped in specific memory cells to represent the desired data. These charges remain stored even when power is removed, allowing for non-volatile data storage.

Detailed Application Field Plans

The AT27C1024-90VI finds applications in various fields, including:

1. Embedded Systems: Used for firmware storage in microcontrollers and other embedded devices.
2. Automotive Electronics: Employed in automotive control units for storing critical data and program code.
3. Consumer Electronics: Utilized in devices such as gaming consoles, set-top boxes, and home appliances for permanent data storage.

Alternative Models

Below are some alternative models that offer similar functionality:

1. AT28C64B-15PU: 64 kilobit (8 kilobyte) parallel EEPROM chip with a 150 nanosecond access time.
2. AM29F040B-90JC: 4 megabit (512 kilobyte) flash memory chip with a 90 nanosecond access time.
3. M27C256B-12F1: 256 kilobit (32 kilobyte) UV erasable PROM