AT27C040-90TI

Product Overview

Category

AT27C040-90TI belongs to the category of programmable read-only memory (PROM) chips.

Use

It is primarily used for storing data that needs to be permanently written and cannot be modified or erased.

Characteristics

• Non-volatile: The stored data remains intact even when power is turned off.
• High storage capacity: The AT27C040-90TI has a capacity of 4 megabits (512 kilobytes).
• Fast access time: It operates at a speed of 90 nanoseconds, allowing for quick retrieval of data.
• Low power consumption: The chip is designed to consume minimal power during operation.

Package

The AT27C040-90TI comes in a 32-pin plastic dual in-line package (PDIP).

Essence

The essence of this product lies in its ability to provide permanent storage of data in a compact and efficient manner.

Packaging/Quantity

The AT27C040-90TI is typically packaged in reels or tubes, with each containing a specific quantity of chips. The exact quantity may vary depending on the manufacturer's specifications.

Specifications

• Memory Capacity: 4 megabits (512 kilobytes)
• Access Time: 90 nanoseconds
• Supply Voltage: 5 volts
• Operating Temperature Range: -40°C to +85°C
• Package Type: 32-pin PDIP

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. /OE (Output Enable)
13. /CE (Chip Enable)
14. VSS (Ground)
15. D0
16. D1
17. D2
18. D3
19. D4
20. D5
21. D6
22. D7
23. A8
24. A9
25. A11
26. /WE (Write Enable)
27. /PGM (Program)
28. VCC (Power Supply)
29. A10
30. NC (No Connection)
31. /BYTE (Byte Mode Select)
32. /RESET (Reset)

Functional Features

• Non-volatile storage: The AT27C040-90TI retains data even when power is disconnected.
• High-speed access: With an access time of 90 nanoseconds, data retrieval is quick and efficient.
• Easy integration: The chip can be easily integrated into various electronic systems due to its standard pin configuration.
• Low power consumption: The AT27C040-90TI is designed to operate with minimal power requirements.

Advantages and Disadvantages

Advantages

• Permanent storage of data
• Fast access time
• Compact package size
• Easy integration into electronic systems
• Low power consumption

Disadvantages

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

Working Principles

The AT27C040-90TI utilizes a technology called electrically programmable read-only memory (EPROM). It consists of a grid of memory cells that can be individually programmed by applying specific electrical voltages. Once programmed, the data remains stored in the memory cells until the chip is replaced.

Detailed Application Field Plans

The AT27C040-90TI finds applications in various fields, including: 1. Embedded systems: Used for storing firmware and boot code in microcontrollers and microprocessors. 2. Automotive electronics: Employed for storing critical data such as calibration tables and configuration settings. 3. Industrial control systems: Utilized for storing program code and data in PLCs (Programmable Logic Controllers) and other control devices.

Detailed and Complete Alternative Models

1. AT27C010-90TI: 1 megabit (128 kilobytes) capacity, 90 nanoseconds access time.
2. AT27C080-90TI: 8 megabit (1 megabyte) capacity, 90 nanoseconds access time.
3. AT27C256R-45TI: 256 kilobit (32 kilobytes) capacity, 45 nanoseconds access time.

These alternative models offer different storage capacities and access times to cater to specific application requirements.

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