AT27C040-12RI

Product Overview

Category

AT27C040-12RI 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 4 megabits, allowing it to store a large amount of data.
• Fast access time: With an access time of 120 nanoseconds, it provides quick retrieval of stored information.
• Low power consumption: The chip operates on low power, making it suitable for battery-powered devices.

Package

The AT27C040-12RI chip is available in a 32-pin plastic dual in-line package (PDIP).

Essence

The essence of AT27C040-12RI lies in its ability to provide reliable and non-volatile storage of data in various electronic systems.

Packaging/Quantity

The chip is typically packaged in tubes or trays, with each tube or tray containing a specific quantity of chips. The exact packaging and quantity may vary depending on the manufacturer.

Specifications

• Memory Capacity: 4 Megabits (512 Kbytes)
• Access Time: 120 ns
• Supply Voltage: 5V ±10%
• Operating Temperature Range: -40°C to +85°C
• Data Retention: 20 years

Pin Configuration

The AT27C040-12RI chip has a total of 32 pins. The pin configuration is as follows:

1. A16
2. A14
3. A12
4. A7
5. A6
6. A5
7. A4
8. A3
9. A2
10. A1
11. A0
12. VPP
13. OE#
14. CE#
15. WE#
16. NC
17. I/O7
18. I/O6
19. I/O5
20. I/O4
21. I/O3
22. I/O2
23. I/O1
24. I/O0
25. GND
26. NC
27. NC
28. NC
29. NC
30. NC
31. NC
32. VCC

Functional Features

• Easy programming: The chip can be programmed using standard PROM programming equipment.
• Non-volatile storage: The stored data remains intact even when power is removed.
• High-speed access: With a fast access time of 120 ns, the chip allows for quick retrieval of data.

Advantages and Disadvantages

Advantages

• Non-volatile memory ensures data integrity.
• High-density storage capacity.
• Fast access time for efficient data retrieval.
• Low power consumption.

Disadvantages

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

Working Principles

The AT27C040-12RI chip utilizes a one-time programmable (OTP) technology. During programming, electrical charges are applied to specific memory cells, altering their state to represent the desired data. Once programmed, the data remains permanently stored in the memory cells and can be accessed as needed.

Detailed Application Field Plans

The AT27C040-12RI chip finds applications in various fields, including: - Embedded systems - Automotive electronics - Industrial control systems - Consumer electronics - Medical devices

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to AT27C040-12RI include: - AT27C080-15PU - AT27C256R-70PU - AT27C512R-45PU - AT27LV010A-12JC

These alternative models may vary in terms of capacity, access time, and package type, providing options to suit different application requirements.

In conclusion, the AT27C040-12RI chip is a programmable read-only memory (PROM) device that offers non-volatile storage of data. With its high density, fast access time, and low power consumption, it finds applications in various electronic systems. While it has the advantage of data integrity and reliability, its one-time programmability and limited storage capacity are some of its limitations.