AT27C516-55JI

Product Overview

Category

AT27C516-55JI belongs to the category of programmable read-only memory (PROM) chips.

Use

This chip is commonly used for storing permanent data that needs to be retained even when power is turned off. It allows users to program and store data permanently, making it ideal for applications where non-volatile memory is required.

Characteristics

• Non-volatile: Data remains intact even without power supply.
• Programmable: Users can write data into the chip using specific programming techniques.
• Read-only: Once programmed, the data cannot be modified or erased.

Package

AT27C516-55JI is available in a 32-pin plastic dual in-line package (PDIP).

Essence

The essence of AT27C516-55JI lies in its ability to provide reliable and non-volatile storage for critical data in various electronic systems.

Packaging/Quantity

This chip is typically sold in reels or tubes, with each reel or tube containing a specific quantity of AT27C516-55JI chips.

Specifications

• Operating Voltage: 5V
• Access Time: 55ns
• Memory Size: 512Kb (64K x 8)
• Organization: 64K words of 8 bits each
• Programming Time: 100µs per byte
• Erase Time: Not applicable (Read-only memory)

Detailed Pin Configuration

1. A14
2. A12
3. A7
4. A6
5. A5
6. A4
7. A3
8. A2
9. A1
10. A0
11. VPP
12. OE#
13. CE#
14. WE#
15. I/O0
16. I/O1
17. I/O2
18. I/O3
19. I/O4
20. I/O5
21. I/O6
22. I/O7
23. NC
24. GND
25. A8
26. A9
27. A11
28. A10
29. VCC
30. A13
31. NC
32. NC

Functional Features

• High-speed access: The chip offers fast access times, allowing for efficient data retrieval.
• Low power consumption: AT27C516-55JI is designed to consume minimal power during operation, making it suitable for battery-powered devices.
• Wide operating voltage range: It can operate within the 4.5V to 5.5V voltage range, providing flexibility in various electronic systems.

Advantages and Disadvantages

Advantages

• Non-volatile storage: Data remains intact even without power supply.
• Reliable performance: The chip offers high-quality and consistent data storage capabilities.
• Easy integration: AT27C516-55JI can be easily integrated into existing electronic systems.

Disadvantages

• Limited reprogrammability: Once programmed, the data cannot be modified or erased, limiting its flexibility compared to other memory technologies.
• Relatively small memory size: With a capacity of 512Kb, this chip may not be suitable for applications requiring larger storage capacities.

Working Principles

AT27C516-55JI operates based on the principle of electrical charge trapping. During programming, an electric charge is applied to specific memory cells, altering their state to represent the desired data. Once programmed, these memory cells retain their state until the next programming cycle.

Detailed Application Field Plans

AT27C516-55JI finds applications in various fields, including: 1. Embedded systems: Used for storing firmware and critical system data in microcontrollers and microprocessors. 2. Automotive electronics: Employed for storing calibration data, configuration settings, and firmware in automotive control units. 3. Industrial automation: Utilized for non-volatile storage of program code and configuration data in PLCs (Programmable Logic Controllers) and industrial control systems.

Detailed and Complete Alternative Models

1. AT27C010-70PU: 1Mb (128K x 8) PROM chip with an access time of 70ns.
2. AT27LV010A-12JC: 1Mb (128K x 8) low-voltage PROM chip with an access time of 120ns.
3. AT28C64B-15SU: 64Kb (8K x 8) EEPROM chip with an access time of 150ns.

These alternative models offer different memory capacities, access times, and programming capabilities, providing options to suit specific application requirements.

In conclusion, AT27C516-55JI is a programmable read-only memory chip that provides reliable and non-volatile storage for critical data. With its high-speed access, low power consumption, and wide operating voltage range, it finds applications