AT27C1024-12VI

Product Overview

Category

AT27C1024-12VI belongs to the category of programmable read-only memory (PROM) chips.

Use

This chip 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 density: The chip has a capacity of 1,048,576 bits (128K x 8).
• Fast access time: The access time is 120 nanoseconds.
• Low power consumption: The chip operates at low power levels.
• Durable: The chip can withstand multiple write cycles without degradation.

Package

The AT27C1024-12VI comes in a standard 40-pin dual in-line package (DIP).

Essence

The essence of this PROM chip lies in its ability to store data permanently, making it ideal for applications where data integrity is crucial.

Packaging/Quantity

The AT27C1024-12VI 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 (128K x 8)
• Access Time: 120 ns
• Operating Voltage: 5V ±10%
• Standby Current: 100 μA (max)
• Operating Temperature Range: -40°C to +85°C
• Package Type: 40-pin DIP

Detailed Pin Configuration

The AT27C1024-12VI chip has a total of 40 pins. The pin configuration is as follows:

1. A14
2. A12
3. A7
4. A6
5. A5
6. A4
7. A3
8. A2
9. A1
10. A0
11. /OE (Output Enable)
12. /CE (Chip Enable)
13. VPP (Programming Voltage)
14. NC (No Connection)
15. DQ0
16. DQ1
17. DQ2
18. DQ3
19. DQ4
20. DQ5
21. DQ6
22. DQ7
23. VCC (Power Supply)
24. GND (Ground)
25. A8
26. A9
27. A11
28. A10
29. /WE (Write Enable)
30. /PGM (Program)
31. /BYTE (Byte Mode Select)
32. /ACC (Access Time Control)
33. /RESET (Reset)
34. /VCCS (Supply Voltage Sense)
35. /VPPS (Programming Voltage Sense)
36. /ACCES (Access Time Sense)
37. /PGMS (Program Sense)
38. /BTS (Byte Mode Sense)
39. /WES (Write Enable Sense)
40. /OES (Output Enable Sense)

Functional Features

• Permanent data storage: The AT27C1024-12VI chip allows for the permanent storage of data, ensuring data integrity even in the absence of power.
• High-speed access: With an access time of 120 ns, this chip enables fast retrieval of stored information.
• Low power consumption: The chip operates at low power levels, making it energy-efficient.
• Multiple write cycles: The chip can withstand multiple write cycles without degradation, ensuring durability and reliability.

Advantages and Disadvantages

Advantages

• Non-volatile memory ensures data integrity.
• High-density storage capacity.
• Fast access time.
• Low power consumption.
• Durable and reliable.

Disadvantages

• Data cannot be modified or erased once written.
• Limited storage capacity compared to other memory technologies.

Working Principles

The AT27C1024-12VI operates based on the principle of electrical charge trapping. The data is stored in a grid of memory cells, with each cell representing a bit. When a voltage is applied to a specific cell, the charge is trapped, representing a binary value (0 or 1). This trapped charge remains intact even when power is removed, allowing for permanent data storage.

Detailed Application Field Plans

The AT27C1024-12VI chip finds applications in various fields, including: 1. Embedded systems: Used for storing firmware and configuration data in microcontrollers and microprocessors. 2. Automotive electronics: Employed for storing critical data such as calibration parameters and diagnostic information. 3. Industrial control systems: Utilized for storing program code and configuration settings in PLCs and SCADA systems. 4. Medical devices: Used for storing patient data, device configurations, and firmware in medical equipment. 5