AT27C2048-70JI

Product Overview

Category

AT27C2048-70JI 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, which can then be accessed by a microcontroller or other electronic devices.

Characteristics

• Non-volatile: The stored data remains intact even without power.
• High storage capacity: The AT27C2048-70JI has a capacity of 2,048 kilobits (256 kilobytes).
• Fast access time: This chip provides quick access to the stored data.
• Durable: Designed to withstand harsh environmental conditions.
• Low power consumption: Consumes minimal power during operation.

Package

The AT27C2048-70JI is available in a 32-pin plastic J-leaded chip carrier (PLCC) package.

Essence

The essence of this PROM chip lies in its ability to store and retain data reliably, making it suitable for applications where permanent data storage is required.

Packaging/Quantity

The AT27C2048-70JI is typically packaged in reels containing multiple units. The exact quantity may vary depending on the manufacturer's specifications.

Specifications

• Memory Capacity: 2,048 kilobits (256 kilobytes)
• Access Time: 70 nanoseconds
• Supply Voltage: 5 volts
• Operating Temperature Range: -40°C to +85°C
• Package Type: PLCC-32

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. VPP
13. OE#
14. CE#
15. WE#
16. I/O0
17. I/O1
18. I/O2
19. I/O3
20. I/O4
21. I/O5
22. I/O6
23. I/O7
24. VCC
25. GND
26. NC
27. NC
28. NC
29. NC
30. NC
31. NC
32. NC

Functional Features

• Easy programming: The AT27C2048-70JI can be programmed using standard PROM programming equipment.
• High-speed operation: Provides fast access to stored data.
• Reliable data retention: The non-volatile nature of the chip ensures that data remains intact even during power loss.
• Low power consumption: Consumes minimal power during both active and standby modes.

Advantages and Disadvantages

Advantages

• Large storage capacity
• Fast access time
• Durable and reliable
• Low power consumption

Disadvantages

• Limited reprogrammability: Once programmed, the data cannot be easily modified or erased.
• Relatively higher cost compared to other memory technologies.

Working Principles

The AT27C2048-70JI operates based on the principle of electrical charge trapping. During programming, a high voltage is applied to the control gate, allowing electrons to tunnel through an insulating layer and become trapped in the floating gate. These trapped charges represent the stored data. When reading the data, the presence or absence of charges in specific memory cells determines the output.

Detailed Application Field Plans

The AT27C2048-70JI finds applications in various fields, including: 1. Embedded systems 2. Automotive electronics 3. Industrial control systems 4. Medical devices 5. Consumer electronics

Detailed and Complete Alternative Models

1. AT27C010-70JI: 1,024 kilobits (128 kilobytes) capacity, 70 ns access time.
2. AT27C080-90JI: 8,192 kilobits (1 megabyte) capacity, 90 ns access time.
3. AT27C4096-12JI: 4,096 kilobits (512 kilobytes) capacity, 12 ns access time.

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

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