AT27C2048-55JU-T

Product Overview

Category

AT27C2048-55JU-T 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 write data onto the chip during manufacturing and then read it back later.

Characteristics

• Non-volatile: The stored data remains intact even without power supply.
• High storage capacity: The AT27C2048-55JU-T has a capacity of 2,048 kilobits (256 kilobytes).
• Fast access time: The chip provides quick access to the stored data.
• Durable: It can withstand multiple read and write cycles without degradation.

Package

The AT27C2048-55JU-T is available in a 32-pin PLCC (Plastic Leaded Chip Carrier) package.

Essence

The essence of this PROM chip lies in its ability to store data permanently and provide reliable access to the stored information.

Packaging/Quantity

The AT27C2048-55JU-T is typically packaged in tubes or trays, with quantities varying based on customer requirements.

Specifications

• Supply voltage: 5V ±10%
• Operating temperature range: -40°C to +85°C
• Access time: 55 nanoseconds
• Input/output voltage levels compatible with TTL and CMOS logic families
• Low power consumption: <100mA active current, <100μA standby current

Detailed Pin Configuration

The AT27C2048-55JU-T has a total of 32 pins, each serving a specific purpose. Here is a detailed pin configuration:

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 voltage supply
13. WE: Write enable
14. OE: Output enable
15. CE: Chip enable
16. NC: No connection
17. I/O0: Data input/output
18. I/O1: Data input/output
19. I/O2: Data input/output
20. I/O3: Data input/output
21. I/O4: Data input/output
22. I/O5: Data input/output
23. I/O6: Data input/output
24. I/O7: 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

• Easy data storage: The chip allows for simple and efficient storage of permanent data.
• High-speed access: The AT27C2048-55JU-T provides fast access to the stored information.
• Compatibility: It is compatible with various TTL and CMOS logic families.
• Low power consumption: The chip consumes minimal power during operation, making it energy-efficient.

Advantages and Disadvantages

Advantages

• Non-volatile memory ensures data retention even without power.
• Large storage capacity for storing significant amounts of data.
• Fast access time enables quick retrieval of information.
• Durable design allows for multiple read and write cycles.

Disadvantages

• Data cannot be modified or erased once programmed onto the chip.
• Limited storage capacity compared to other memory technologies.
• Relatively higher power consumption compared to some newer memory technologies.

Working Principles

The AT27C2048-55JU-T operates based on the principle of electrical charge trapping. During programming, a high voltage is applied to the selected address pins, causing electrons to be trapped in specific memory cells. These trapped charges represent the stored data. When reading, the chip activates the appropriate address and outputs the corresponding data.

Detailed Application Field Plans

The AT27C2048-55JU-T finds applications in various fields, including: 1. Embedded systems: Used for storing firmware and configuration data. 2. Automotive electronics: Used for storing calibration data and system parameters. 3. Industrial control systems: Used for storing critical data and program code. 4. Consumer electronics: Used for storing boot code and device-specific settings.

Detailed and Complete Alternative Models

Some alternative models to the AT27C2048-55JU-T include: 1. AT28C256-15PU: 256-kilob