AT27C040-15PI

Product Overview

Category

AT27C040-15PI belongs to the category of programmable read-only memory (PROM) chips.

Use

This product is commonly used in electronic devices for storing permanent data that cannot be modified or erased. It provides non-volatile memory storage, making it ideal for applications where data integrity is crucial.

Characteristics

• Non-volatile: The stored data remains intact even when power is removed.
• High capacity: The AT27C040-15PI has a capacity of 4 megabits (512 kilobytes).
• Fast access time: It operates at a speed of 150 nanoseconds, allowing for quick retrieval of data.
• Low power consumption: This chip is designed to minimize power usage, making it suitable for battery-powered devices.

Package and Quantity

The AT27C040-15PI comes in a 32-pin DIP (Dual Inline Package) format. Each package contains one chip.

Specifications

• Capacity: 4 megabits (512 kilobytes)
• Access Time: 150 nanoseconds
• Operating Voltage: 5 volts
• Package Type: 32-pin DIP

Pin Configuration

The AT27C040-15PI has a total of 32 pins, which 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 Supply Voltage
13. OE - Output Enable
14. CE - Chip Enable
15. WE - Write Enable
16. NC - No Connection
17. D0 - Data Input/Output
18. D1 - Data Input/Output
19. D2 - Data Input/Output
20. D3 - Data Input/Output
21. D4 - Data Input/Output
22. D5 - Data Input/Output
23. D6 - Data Input/Output
24. D7 - Data Input/Output
25. VCC - Power Supply
26. GND - Ground
27. A8 - Address Input
28. A9 - Address Input
29. A11 - Address Input
30. A10 - Address Input
31. A14 - Address Input
32. A13 - Address Input

Functional Features

The AT27C040-15PI offers the following functional features:

• High-speed access: With an access time of 150 nanoseconds, it allows for quick retrieval of data.
• Non-volatile storage: The stored data remains intact even when power is removed.
• Easy integration: It can be easily integrated into various electronic devices due to its standard pin configuration and package format.
• Low power consumption: Designed to minimize power usage, making it suitable for battery-powered applications.

Advantages and Disadvantages

Advantages

• Non-volatile memory ensures data integrity.
• High capacity allows for storing a large amount of permanent data.
• Fast access time enables quick retrieval of information.
• Low power consumption makes it suitable for battery-powered devices.

Disadvantages

• Once programmed, the data cannot be modified or erased, limiting flexibility.
• Limited write endurance compared to other types of memory.

Working Principles

The AT27C040-15PI operates based on the principle of electrical charge trapping. When data is programmed onto the chip, charges are trapped in specific memory cells, representing the stored information. These charges can be read by applying appropriate voltages to the chip's pins.

Detailed Application Field Plans

The AT27C040-15PI finds applications in various fields, including:

1. Embedded Systems: Used for storing firmware and configuration data in microcontrollers and other embedded devices.
2. Automotive Electronics: Employed for storing critical data such as calibration tables, sensor data, and code in automotive electronic control units (ECUs).
3. Industrial Control Systems: Utilized for storing program code and configuration data in industrial automation systems.
4. Consumer Electronics: Found in devices like gaming consoles, set-top boxes, and digital cameras for storing system software and firmware.

Alternative Models

Below are some alternative models that offer similar functionality:

1. AT28C64B-15PU: 64 kilobit (8 kilobyte) EEPROM chip with a 150 nanosecond access time.
2. AM29F040B-90JC: 4 megabit (512 kilobyte) flash memory chip with a 90 nanosecond access time.
3. M27C4001-12