AT27C040-12TC

Product Overview

Category

AT27C040-12TC 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 is widely utilized in various electronic devices such as computers, microcontrollers, and consumer electronics.

Characteristics

• Non-volatile: The stored data remains intact even without power supply.
• Programmable: The memory can be written or programmed with data.
• Read-only: Once programmed, the data cannot be modified or erased.

Package

AT27C040-12TC is available in a 32-pin Thin Small Outline Package (TSOP).

Essence

The essence of this product lies in its ability to provide reliable and non-volatile storage for critical data in electronic systems.

Packaging/Quantity

AT27C040-12TC is typically packaged in reels or tubes, with each package containing a specific quantity of chips. The exact packaging and quantity may vary depending on the supplier.

Specifications

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

Detailed Pin Configuration

The AT27C040-12TC chip has a total of 32 pins. 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. VCC
21. GND
22. I/O4
23. I/O5
24. I/O6
25. I/O7
26. A8
27. A9
28. A11
29. A10
30. NC
31. NC
32. NC

Functional Features

• High-speed access: The AT27C040-12TC offers fast access times, allowing for efficient data retrieval.
• Low power consumption: This chip is designed to operate with minimal power requirements, making it suitable for battery-powered devices.
• Easy integration: The standard pin configuration and compatibility with common microcontrollers simplify the integration process.

Advantages and Disadvantages

Advantages

• Non-volatile storage ensures data retention even during power loss.
• Wide range of operating temperatures allows for versatile usage in various environments.
• High-speed access enables quick data retrieval.

Disadvantages

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

Working Principles

The AT27C040-12TC operates based on the principle of electrical programming. Data is written into the memory cells by applying appropriate voltage levels to the control pins (CE#, OE#, and WE#) and providing the desired data inputs (I/O0-I/O7). Once programmed, the stored data can be read by activating the output enable (OE#) pin.

Detailed Application Field Plans

AT27C040-12TC finds applications in various fields, including: 1. Computer systems: Used for storing BIOS firmware and system configuration data. 2. Microcontroller-based projects: Provides non-volatile memory for program code and critical data. 3. Consumer electronics: Used in devices like gaming consoles, set-top boxes, and audio players for firmware storage.

Detailed and Complete Alternative Models

1. AT27C080-15PC: 8 Megabit (1 Megabyte) PROM chip with a slower access time of 150 ns.
2. AT28C256-15PU: 256 Kilobit (32 Kilobyte) EEPROM chip with faster access time of 150 ns.
3. AT29C010A-12TC: 1 Megabit (128 Kilobyte) Flash memory chip with similar access time and package as AT27C040-12TC.

These alternative models offer different memory sizes, access times, and technologies to suit specific requirements.

Word count: 536 words