AT27C040-70RI

Product Overview

Category

AT27C040-70RI 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 AT27C040-70RI has a storage capacity of 4 megabits (512 kilobytes).
• Fast access time: It has a maximum access time of 70 nanoseconds, allowing for quick retrieval of data.
• Low power consumption: The chip operates on low power, making it suitable for battery-powered devices.

Package

The AT27C040-70RI comes in a 32-pin plastic dual in-line package (PDIP).

Essence

The essence of the AT27C040-70RI is its ability to provide non-volatile storage for critical data in various electronic applications.

Packaging/Quantity

The chip is typically packaged in tubes or trays and is available in quantities suitable for both small-scale and large-scale production.

Specifications

• Storage Capacity: 4 Megabits (512 Kilobytes)
• Access Time: 70 Nanoseconds
• Operating Voltage: 5 Volts
• Package Type: 32-pin PDIP
• Temperature Range: -40°C to +85°C

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
13. /WE
14. VCC
15. DQ0
16. DQ1
17. DQ2
18. DQ3
19. DQ4
20. DQ5
21. DQ6
22. DQ7
23. VSS
24. NC
25. /CE
26. A14
27. A13
28. A8
29. A9
30. A11
31. A10
32. /BYTE

Functional Features

• Non-volatile storage: The AT27C040-70RI retains data even when power is disconnected.
• High-speed access: With a maximum access time of 70 nanoseconds, data retrieval is quick.
• Easy integration: The chip can be easily integrated into various electronic systems due to its standard pin configuration.
• Low power consumption: It operates on low power, making it suitable for battery-powered devices.

Advantages and Disadvantages

Advantages

• Non-volatile storage ensures data integrity.
• High storage capacity allows for storing large amounts of critical data.
• Fast access time enables quick retrieval of information.
• Easy integration into existing electronic systems.
• Low power consumption prolongs battery life in portable devices.

Disadvantages

• Data cannot be modified or erased once programmed.
• Limited storage capacity compared to other memory technologies.
• Relatively higher cost per bit compared to other memory options.

Working Principles

The AT27C040-70RI uses a technology called electrically programmable read-only memory (EPROM). It stores data by permanently altering the state of memory cells using electrical charges. Once programmed, the data remains intact until the chip is replaced.

Detailed Application Field Plans

The AT27C040-70RI finds applications in various fields, including: 1. Embedded systems: Used for firmware storage in microcontrollers and other embedded devices. 2. Automotive electronics: Stores critical data such as calibration values and configuration settings. 3. Industrial control systems: Provides non-volatile storage for program code and configuration data. 4. Medical devices: Used for storing patient data, firmware, and device configurations. 5. Consumer electronics: Enables permanent storage of firmware and software in devices like gaming consoles and set-top boxes.

Detailed and Complete Alternative Models

1. AT27C080-90PU: 8 Megabit (1 Megabyte) PROM chip with a faster access time of 90 nanoseconds.
2. AT28C256-15PU: 256 Kilobit (32 Kilobyte) EEPROM chip with an access time of 15 nanoseconds.
3. AT29C010A-12PC: 1 Megabit (128 Kilobyte) Flash memory chip with a maximum access time of 12 nanoseconds.

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

In conclusion, the AT27C040-70RI is a programmable read-only memory chip that provides non-volatile storage for critical data. With its high storage capacity, fast access time, and low power consumption, it finds applications