AT27LV040A-90TI

Product Overview

Category

AT27LV040A-90TI 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 used in applications where non-volatile memory is required.

Characteristics

• Non-volatile: The data stored in AT27LV040A-90TI remains intact even when power is removed.
• High density: This chip offers a storage capacity of 4 megabits (512 kilobytes).
• Fast access time: With an access time of 90 nanoseconds, it provides quick retrieval of stored data.
• Low power consumption: AT27LV040A-90TI operates at low power levels, making it suitable for battery-powered devices.

Package

AT27LV040A-90TI is available in a 32-pin Thin Small Outline Package (TSOP), which ensures compactness and ease of integration into electronic circuits.

Essence

The essence of AT27LV040A-90TI lies in its ability to provide reliable and permanent storage of data in various electronic systems.

Packaging/Quantity

This chip is typically packaged in reels or tubes, with each reel containing 1,000 units.

Specifications

• Storage Capacity: 4 Megabits (512 Kilobytes)
• Access Time: 90 Nanoseconds
• Supply Voltage: 2.7V - 5.5V
• Operating Temperature Range: -40°C to +85°C
• Data Retention: 10 years

Detailed Pin Configuration

The AT27LV040A-90TI chip has a total of 32 pins, each serving a specific function. The pin configuration is as follows:

1. A0 - Address Input
2. A1 - Address Input
3. A2 - Address Input
4. A3 - Address Input
5. A4 - Address Input
6. A5 - Address Input
7. A6 - Address Input
8. A7 - Address Input
9. A8 - Address Input
10. A9 - Address Input
11. A10 - Address Input
12. A11 - Address Input
13. A12 - Address Input
14. A13 - Address Input
15. A14 - Address Input
16. A15 - Address Input
17. /OE - Output Enable
18. /CE - Chip Enable
19. DQ0 - Data Input/Output
20. DQ1 - Data Input/Output
21. DQ2 - Data Input/Output
22. DQ3 - Data Input/Output
23. DQ4 - Data Input/Output
24. DQ5 - Data Input/Output
25. DQ6 - Data Input/Output
26. DQ7 - Data Input/Output
27. VCC - Power Supply
28. GND - Ground
29. NC - No Connection
30. NC - No Connection
31. /WE - Write Enable
32. /RP - Reset/Program

Functional Features

• Non-volatile storage: AT27LV040A-90TI retains data even when power is removed.
• High-speed access: With an access time of 90 nanoseconds, it allows for quick retrieval of stored data.
• Low power consumption: This chip operates at low power levels, making it suitable for battery-powered devices.
• Easy integration: The compact TSOP package enables seamless integration into electronic circuits.

Advantages and Disadvantages

Advantages

• Permanent storage of data
• Fast access time
• Low power consumption
• Compact package for easy integration

Disadvantages

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

Working Principles

AT27LV040A-90TI utilizes a technology known as electrically programmable read-only memory (EPROM). It consists of a grid of memory cells, with each cell storing a bit of data. The data is programmed into the memory cells during the manufacturing process and remains unchanged throughout the chip's lifespan. When data needs to be accessed, the appropriate address is provided, and the chip retrieves the corresponding data from the memory cells.

Detailed Application Field Plans

AT27LV040A-90TI finds applications in various electronic systems that require non-volatile storage. Some common application fields include:

1. Embedded Systems: Used for firmware storage in microcontrollers and other embedded devices.
2. Automotive Electronics: Employed for storing critical data such as calibration values and configuration settings in automotive control units.
3. Industrial Control Systems: Utilized for storing program code and configuration data in industrial automation systems.
4. Consumer Electronics: Integrated into devices like set-top boxes, gaming consoles, and