AT27C040-12PC

Product Overview

Category

AT27C040-12PC belongs to the category of programmable read-only memory (PROM) chips.

Use

This product is commonly used for storing permanent data that needs to be retained even when power is turned off. It allows users to program and store data permanently, making it ideal for applications where non-volatile memory is required.

Characteristics

• Non-volatile: The stored data remains intact even when power is disconnected.
• Programmable: Users can write data into the memory using specific programming techniques.
• Read-only: Once programmed, the data cannot be modified or erased.

Package

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

Essence

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

Packaging/Quantity

This product is typically packaged in tubes or trays, with quantities varying based on customer requirements.

Specifications

• Part Number: AT27C040-12PC
• Memory Size: 4 Megabits (512 Kbytes)
• Access Time: 120 ns
• Supply Voltage: 5V
• Operating Temperature Range: -40°C to +85°C
• Data Retention: 20 years

Detailed Pin Configuration

The AT27C040-12PC chip has a total of 32 pins, each serving a specific function. Here is the detailed pin configuration:

1. A16
2. A15
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. I/O0
17. I/O1
18. I/O2
19. I/O3
20. I/O4
21. I/O5
22. I/O6
23. I/O7
24. VCC
25. GND
26. NC
27. A8
28. A9
29. A11
30. A10
31. A13
32. A14

Functional Features

• High-speed access: The AT27C040-12PC offers fast access times, allowing for efficient data retrieval.
• Low power consumption: This chip is designed to minimize power usage, making it suitable for battery-powered devices.
• Easy integration: It can be easily integrated into various electronic systems due to its standard pin configuration and compatibility.

Advantages and Disadvantages

Advantages

• Non-volatile storage ensures data retention even during power loss.
• Reliable and durable, with a long data retention period of 20 years.
• Easy to program and use in different applications.
• Compatible with various electronic systems.

Disadvantages

• Once programmed, the data cannot be modified or erased, limiting flexibility.
• Limited storage capacity compared to other memory technologies.

Working Principles

The AT27C040-12PC operates based on the principle of electrical charge trapping. When data is programmed into the memory, charges are trapped in specific memory cells, representing the stored information. These charges remain intact until new data is written or the chip is exposed to an ultraviolet (UV) erasing process.

Detailed Application Field Plans

AT27C040-12PC finds application in various fields, including: 1. Embedded systems: Used for firmware storage in microcontrollers and other embedded devices. 2. Automotive electronics: Provides non-volatile memory for critical data storage in automotive systems. 3. Industrial control systems: Used for storing configuration data and firmware in industrial control applications. 4. Consumer electronics: Enables permanent storage of data in devices such as gaming consoles, set-top boxes, and digital cameras.

Detailed and Complete Alternative Models

1. AT27C080-15PC: 8 Megabit (1 Mbyte) PROM chip with a faster access time of 150 ns.
2. AT27C256R-45PU: 256 Kilobit (32 Kbyte) PROM chip with a lower supply voltage requirement of 3.3V.
3. AT27LV010A-12JC: 1 Megabit (128 Kbyte) low-voltage PROM chip with an extended operating temperature range of -55°C to +125°C.

These alternative models offer different specifications and features, allowing users to choose the most suitable option based on their specific requirements.

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