Microchip Technology
Obrázek může být reprezentace.
Viz Specifikace pro podrobnosti o produktu.
AT27C040-70RC
Zobrazit detail DataSheets

AT27C040-70RC

Product Overview

Category

AT27C040-70RC 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 retained, even when power is turned off. It allows users to program and store data during manufacturing or in-field programming.

Characteristics

  • Non-volatile: The stored data remains intact even without power.
  • High storage capacity: The AT27C040-70RC has a storage capacity of 4 megabits (512 kilobytes).
  • Fast access time: With an access time of 70 nanoseconds, it provides quick retrieval of stored data.
  • Low power consumption: The chip operates on low power, making it suitable for battery-powered devices.

Package

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

Essence

The essence of this product lies in its ability to provide non-volatile storage of data, making it ideal for applications where permanent data retention is required.

Packaging/Quantity

The AT27C040-70RC is typically packaged in tubes or trays, with quantities varying based on customer requirements.

Specifications

  • Storage Capacity: 4 Megabits (512 Kilobytes)
  • Access Time: 70 Nanoseconds
  • Supply Voltage: 5V ±10%
  • 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. DQ0
  16. DQ1
  17. DQ2
  18. DQ3
  19. DQ4
  20. DQ5
  21. DQ6
  22. DQ7
  23. VCC (+5V Power Supply)
  24. A8
  25. A9
  26. A11
  27. A10
  28. /WE (Write Enable)
  29. NC (No Connection)
  30. NC (No Connection)
  31. NC (No Connection)
  32. NC (No Connection)

Functional Features

  • Easy programming: The AT27C040-70RC supports parallel programming, allowing for efficient and straightforward data storage.
  • High reliability: This PROM chip offers excellent data retention and endurance, ensuring long-term reliability.
  • Compatibility: It is compatible with a wide range of microcontrollers and other devices, making it versatile for various applications.

Advantages and Disadvantages

Advantages

  • Non-volatile storage ensures data retention even without power.
  • Fast access time enables quick retrieval of stored data.
  • Low power consumption makes it suitable for battery-powered devices.
  • Easy to program and use.
  • High reliability and compatibility.

Disadvantages

  • Limited storage capacity compared to modern memory technologies.
  • Requires external programming equipment for initial data programming.

Working Principles

The AT27C040-70RC operates based on the principle of electrical charge trapping in a floating gate structure. During programming, a high voltage is applied to the control gates, causing electrons to tunnel through a thin oxide layer onto the floating gate. This trapped charge alters the threshold voltage, allowing the device to store binary data.

During read operations, the stored charge affects the transistor's conductance, enabling the retrieval of the programmed data.

Detailed Application Field Plans

The AT27C040-70RC finds applications in various fields, including: 1. Embedded systems: Used for firmware storage in microcontrollers and other embedded devices. 2. Automotive electronics: Employed for storing critical data such as calibration parameters and configuration settings. 3. Industrial automation: Utilized for storing program code and configuration data in industrial control systems. 4. Consumer electronics: Found in devices like gaming consoles, set-top boxes, and audio equipment for storing firmware and data.

Detailed and Complete Alternative Models

  1. AT27C080-90JC: 8 Megabit (1 Megabyte) PROM chip with a faster access time of 90 nanoseconds.
  2. AT28C256-15PU: 256 Kilobit (32 Kilobyte) EEPROM chip with a slower access time but offers byte-level erasability.
  3. AT29C010A-12PC: 1 Megabit (128 Kilobyte) Flash memory chip with a similar access time and programming interface.

These alternative models provide different storage capacities and features to suit specific application requirements.

Word count: 581 words

Seznam 10 běžných otázek a odpovědí souvisejících s aplikací AT27C040-70RC v technických řešeních

Sure! Here are 10 common questions and answers related to the application of AT27C040-70RC in technical solutions:

  1. Q: What is AT27C040-70RC? A: AT27C040-70RC is a type of EEPROM (Electrically Erasable Programmable Read-Only Memory) chip with a capacity of 4 megabits.

  2. Q: What are the typical applications of AT27C040-70RC? A: AT27C040-70RC is commonly used in various electronic devices, such as computers, gaming consoles, automotive systems, and industrial equipment.

  3. Q: How does AT27C040-70RC store data? A: AT27C040-70RC uses floating-gate transistors to store data. It can be programmed electrically and retains the data even when power is removed.

  4. Q: What is the operating voltage range for AT27C040-70RC? A: The operating voltage range for AT27C040-70RC is typically between 4.5V and 5.5V.

  5. Q: Can AT27C040-70RC be reprogrammed multiple times? A: No, AT27C040-70RC is a one-time programmable memory chip. Once programmed, the data cannot be changed or erased.

  6. Q: What is the access time of AT27C040-70RC? A: The access time of AT27C040-70RC is typically 70 nanoseconds, hence the "70RC" designation.

  7. Q: Does AT27C040-70RC require any special programming equipment? A: Yes, AT27C040-70RC requires a device programmer or burner to program the data onto the chip.

  8. Q: Can AT27C040-70RC operate in extreme temperature conditions? A: Yes, AT27C040-70RC is designed to operate reliably in a wide temperature range, typically from -40°C to 85°C.

  9. Q: What is the package type of AT27C040-70RC? A: AT27C040-70RC is commonly available in a 32-pin DIP (Dual In-line Package) or PLCC (Plastic Leaded Chip Carrier) package.

  10. Q: Are there any specific precautions to consider when handling AT27C040-70RC? A: It is important to handle AT27C040-70RC with proper electrostatic discharge (ESD) precautions to prevent damage to the chip.