AT27C1024-70JU

Product Overview

Category

AT27C1024-70JU belongs to the category of programmable read-only memory (PROM) chips.

Use

This product is primarily used for storing data that needs to be permanently written and cannot be modified or erased. It is commonly employed in applications where non-volatile memory is required.

Characteristics

• Non-volatile: The stored data remains intact even when power is removed.
• High storage capacity: The AT27C1024-70JU has a capacity of 1,048,576 bits (128 kilobytes).
• Fast access time: With a speed rating of 70 nanoseconds, it provides quick access to stored data.
• Low power consumption: The chip operates at low power levels, making it suitable for battery-powered devices.

Package

The AT27C1024-70JU is available in a 32-pin PLCC (Plastic Leaded Chip Carrier) package.

Essence

The essence of this product lies in its ability to store large amounts of data in a non-volatile manner, ensuring data integrity even in the absence of power.

Packaging/Quantity

The AT27C1024-70JU is typically packaged in tubes or trays, with each tube or tray containing a specific quantity of chips. The exact quantity may vary depending on the manufacturer's specifications.

Specifications

• Memory Capacity: 1,048,576 bits (128 kilobytes)
• Access Time: 70 nanoseconds
• Supply Voltage: 5V ±10%
• Operating Temperature Range: -40°C to +85°C
• Package Type: 32-pin PLCC

Detailed Pin Configuration

The AT27C1024-70JU features a 32-pin configuration. The pinout diagram and description of each pin are as follows:

1. A16: Address Input
2. A15: Address Input
3. A12: Address Input
4. A7: Address Input
5. A6: Address Input
6. A5: Address Input
7. A4: Address Input
8. A3: Address Input
9. A2: Address Input
10. A1: Address Input
11. A0: Address Input
12. /OE: Output Enable
13. /CE: Chip Enable
14. VSS: Ground
15. DQ0: Data Input/Output
16. DQ1: Data Input/Output
17. DQ2: Data Input/Output
18. DQ3: Data Input/Output
19. DQ4: Data Input/Output
20. DQ5: Data Input/Output
21. DQ6: Data Input/Output
22. DQ7: Data Input/Output
23. VCC: Power Supply
24. A8: Address Input
25. A9: Address Input
26. A11: Address Input
27. A10: Address Input
28. /WE: Write Enable
29. /PGM: Program
30. /BYTE: Byte Mode Select
31. /ACC: Access Time Control
32. NC: No Connection

Functional Features

• Non-volatile storage: The AT27C1024-70JU retains data even when power is removed.
• Fast access time: With a speed rating of 70 nanoseconds, it provides quick access to stored data.
• Easy integration: The chip can be easily integrated into existing electronic systems due to its standard pin configuration.
• Low power consumption: The AT27C1024-70JU operates at low power levels, making it suitable for battery-powered devices.

Advantages and Disadvantages

Advantages

• Non-volatile storage ensures data integrity.
• High storage capacity allows for storing large amounts of data.
• Fast access time enables quick retrieval of information.
• Low power consumption makes it suitable for portable devices.

Disadvantages

• Data cannot be modified or erased once programmed.
• Limited write cycles compared to other memory technologies.
• Relatively larger physical size compared to newer memory technologies.

Working Principles

The AT27C1024-70JU is based on the principle of electrically programmable read-only memory (EPROM). It utilizes a floating-gate transistor structure that can be electrically programmed to store data. Once programmed, the stored data remains intact until the chip is replaced.

Detailed Application Field Plans

The AT27C1024-70JU finds applications in various fields, including: 1. Embedded systems: Used for firmware storage in microcontrollers and other embedded devices. 2. Automotive electronics: Employed for storing critical data such as calibration values and configuration settings. 3. Industrial control systems: Utilized for storing program code and configuration data in industrial automation equipment