AT27C040-70TU

Product Overview

Category

AT27C040-70TU 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 AT27C040-70TU has a capacity of 4 megabits (512 kilobytes).
• Fast access time: It offers a fast access time of 70 nanoseconds.
• Low power consumption: The chip operates on low power, making it suitable for battery-powered devices.

Package

The AT27C040-70TU is available in a standard 32-pin plastic dual in-line package (PDIP).

Essence

The essence of this product lies in its ability to provide reliable and permanent storage of data in electronic systems.

Packaging/Quantity

The AT27C040-70TU is typically packaged in reels or tubes, with each reel or tube containing a specific quantity of chips. The exact quantity may vary depending on the manufacturer's specifications.

Specifications

• Memory Type: Programmable Read-Only Memory (PROM)
• Capacity: 4 Megabits (512 Kilobytes)
• Access Time: 70 Nanoseconds
• Supply Voltage: 5V
• Operating Temperature Range: -40°C to +85°C
• Package Type: 32-Pin Plastic Dual In-Line Package (PDIP)

Detailed Pin Configuration

The AT27C040-70TU features a 32-pin configuration. The pins are assigned specific functions 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. VPP: Programming Voltage Input
13. WE: Write Enable Input
14. OE: Output Enable Input
15. CE: Chip Enable Input
16. NC: No Connection
17. DQ0: Data Input/Output
18. DQ1: Data Input/Output
19. DQ2: Data Input/Output
20. DQ3: Data Input/Output
21. DQ4: Data Input/Output
22. DQ5: Data Input/Output
23. DQ6: Data Input/Output
24. DQ7: Data Input/Output
25. VCC: Power Supply
26. GND: Ground
27. NC: No Connection
28. NC: No Connection
29. NC: No Connection
30. NC: No Connection
31. NC: No Connection
32. NC: No Connection

Functional Features

• Non-volatile storage: The AT27C040-70TU retains data even when power is removed.
• Fast access time: It offers quick access to stored data, enhancing system performance.
• Easy integration: The chip can be easily integrated into various electronic systems.
• Low power consumption: It operates on low power, making it suitable for battery-powered devices.

Advantages and Disadvantages

Advantages

• Reliable and permanent storage of data.
• High storage capacity.
• Fast access time.
• Low power consumption.

Disadvantages

• Data cannot be modified or erased once programmed.
• Limited flexibility compared to other memory types.

Working Principles

The AT27C040-70TU is based on the principle of electrically programmable read-only memory (EPROM). It utilizes a grid of transistors and floating-gate MOSFETs to store data. The programming process involves applying a high voltage to specific memory cells, which traps charge in the floating gate, thereby storing the desired data permanently.

Detailed Application Field Plans

The AT27C040-70TU finds applications in various fields, including: 1. Embedded systems 2. Automotive electronics 3. Industrial control systems 4. Medical devices 5. Consumer electronics

Detailed and Complete Alternative Models

Some alternative models to the AT27C040-70TU include: 1. AT28C010-12PC 2. AM29F040B-90JC 3. M27C4001-10F1 4. SST39SF040-70-4C-NHE

These models offer similar functionality and can be considered as alternatives depending on specific requirements.

In conclusion, the AT27C040-70TU is a programmable read-only memory