AT27C1024-55JI

Product Overview

Category

AT27C1024-55JI belongs to the category of programmable read-only memory (PROM) chips.

Use

This product is commonly used for storing permanent data or program code that cannot be modified once written.

Characteristics

• Non-volatile: The stored data remains intact even when power is turned off.
• High storage capacity: The AT27C1024-55JI has a capacity of 1,048,576 bits (128 kilobytes).
• Fast access time: It offers a fast access time of 55 nanoseconds.
• Low power consumption: The chip operates on low power, making it suitable for battery-powered devices.

Package

The AT27C1024-55JI is available in a 32-pin plastic package.

Essence

This PROM chip allows users to store and retrieve data reliably and efficiently.

Packaging/Quantity

The AT27C1024-55JI is typically sold in reels or tubes containing multiple units. The exact quantity may vary depending on the supplier.

Specifications

• Memory Type: Programmable Read-Only Memory (PROM)
• Capacity: 1,048,576 bits (128 kilobytes)
• Access Time: 55 nanoseconds
• Supply Voltage: 5V
• Operating Temperature Range: -40°C to +85°C
• Package Type: 32-pin plastic package

Detailed Pin Configuration

The AT27C1024-55JI has a total of 32 pins. Here is the pin configuration:

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. /OE - Output Enable
18. /CE - Chip Enable
19. /WE - Write Enable
20. VSS - Ground
21. DQ0 - Data Output/Input
22. DQ1 - Data Output/Input
23. DQ2 - Data Output/Input
24. DQ3 - Data Output/Input
25. DQ4 - Data Output/Input
26. DQ5 - Data Output/Input
27. DQ6 - Data Output/Input
28. DQ7 - Data Output/Input
29. VCC - Power Supply
30. NC - No Connection
31. NC - No Connection
32. /WP - Write Protect

Functional Features

• Easy data storage: The AT27C1024-55JI allows users to easily store data by providing a simple interface for address and data inputs.
• High-speed access: With an access time of 55 nanoseconds, this chip enables fast retrieval of stored information.
• Reliable operation: The non-volatile nature of PROM ensures that the stored data remains intact even in the absence of power.
• Low power consumption: The chip operates on low power, making it suitable for various applications, including battery-powered devices.

Advantages and Disadvantages

Advantages

• Non-volatile memory ensures data retention without power supply.
• High storage capacity allows for storing large amounts of data or program code.
• Fast access time enables quick retrieval of information.
• Low power consumption makes it suitable for portable devices.

Disadvantages

• The stored data cannot be modified or erased, limiting its flexibility compared to other types of memory.
• Limited write endurance: PROM chips have a finite number of write cycles before they become unreliable.

Working Principles

The AT27C1024-55JI operates based on the principle of electrical programming. During the manufacturing process, the memory cells are programmed by applying specific voltage levels to the address and control inputs. Once programmed, the stored data remains unchanged until the chip is replaced.

Detailed Application Field Plans

The AT27C1024-55JI finds applications in various fields, including:

1. Embedded Systems: It can be used to store firmware or boot code in microcontrollers and other embedded systems.
2. Automotive Electronics: PROM chips are utilized for storing calibration data, configuration settings, and firmware in automotive electronic control units (ECUs).
3. Industrial Control Systems: These chips are employed in industrial control systems to store critical program code or configuration data.
4. Medical Devices: PROMs are used in medical devices to store firmware or patient-specific data securely.

Detailed and Complete Alternative Models

1. AT27C256R-45PU