AT27C1024-90JI

Product Overview

Category

AT27C1024-90JI belongs to the category of non-volatile memory devices.

Use

This product is primarily used for storing and retrieving digital information in electronic systems.

Characteristics

• Non-volatile: The stored data remains intact even when power is removed.
• High capacity: The AT27C1024-90JI has a storage capacity of 1,048,576 bits (128 kilobytes).
• Fast access time: It operates at a speed of 90 nanoseconds, allowing for quick data retrieval.
• Low power consumption: The device is designed to minimize power usage, making it suitable for battery-powered applications.

Package

The AT27C1024-90JI is available in a 32-pin plastic package.

Essence

The essence of this product lies in its ability to provide reliable and non-volatile storage for electronic systems.

Packaging/Quantity

The AT27C1024-90JI is typically packaged in tubes or trays, with a quantity of 25 pieces per tube/tray.

Specifications

• Memory Type: EPROM (Erasable Programmable Read-Only Memory)
• Organization: 128K x 8 bits
• Supply Voltage: 5V
• Access Time: 90 ns
• Operating Temperature Range: -40°C to +85°C
• Data Retention: 20 years

Detailed Pin Configuration

The AT27C1024-90JI has a total of 32 pins. The pin configuration is as follows:

1. A0 - Address Input
2. A1 - Address Input
3. A2 - Address Input
4. A3 - Address Input
5. A4 - Address Input
6. A5 - Address Input
7. A6 - Address Input
8. A7 - Address Input
9. A8 - Address Input
10. A9 - Address Input
11. A10 - Address Input
12. A11 - Address Input
13. A12 - Address Input
14. A13 - Address Input
15. A14 - Address Input
16. A15 - Address Input
17. VPP - Programming Voltage Input
18. GND - Ground
19. Q7 - Data Output
20. Q6 - Data Output
21. Q5 - Data Output
22. Q4 - Data Output
23. Q3 - Data Output
24. Q2 - Data Output
25. Q1 - Data Output
26. Q0 - Data Output
27. CE - Chip Enable Input
28. OE - Output Enable Input
29. WE - Write Enable Input
30. NC - No Connection
31. VCC - Power Supply
32. NC - No Connection

Functional Features

• Easy integration: The AT27C1024-90JI can be easily integrated into existing electronic systems.
• High reliability: It offers reliable data storage and retrieval, ensuring the integrity of stored information.
• Versatile compatibility: The device is compatible with a wide range of microcontrollers and digital systems.
• Low power consumption: The AT27C1024-90JI consumes minimal power during operation, making it suitable for energy-efficient applications.

Advantages and Disadvantages

Advantages

• Non-volatile memory ensures data retention even in the absence of power.
• High storage 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.

Disadvantages

• The content of the memory cannot be modified once programmed.
• Erasing the memory requires exposure to ultraviolet light, which can be time-consuming.

Working Principles

The AT27C1024-90JI is based on EPROM technology. It utilizes a grid of memory cells that can be individually programmed or erased. When data is written to the memory, electrical charges are trapped in the floating gate of each memory cell, representing the stored information. The presence or absence of these charges determines the binary state of each bit.

During read operations, the addressed memory cell is selected, and its stored charge is detected by sensing circuitry. The output data is then made available for external use.

Detailed Application Field Plans

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

1. Embedded systems: It is used for firmware storage in microcontrollers and other embedded devices.
2. Automotive electronics: The device is employed in automotive control units for storing calibration data and program code.
3. Industrial automation: It is utilized in programmable logic controllers (PLCs) for storing configuration data and program instructions.
4. Consumer electronics: The AT27C1024-90JI can be found in devices such as gaming consoles, set-top boxes, and home appliances for storing firmware