AT27C2048-55JC

Product Overview

Category

AT27C2048-55JC belongs to the category of programmable read-only memory (PROM) chips.

Use

This product is commonly used for storing permanent data or program code that cannot be modified once programmed.

Characteristics

• Non-volatile: The stored data remains intact even when power is removed.
• High storage capacity: The AT27C2048-55JC has a capacity of 2,048 kilobits (256 kilobytes).
• Fast access time: It operates at a speed of 55 nanoseconds.
• Low power consumption: The chip is designed to minimize power usage.

Package

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

Essence

The essence of this product lies in its ability to provide non-volatile storage for critical data or program code.

Packaging/Quantity

The AT27C2048-55JC is typically packaged in tubes or trays and is available in quantities suitable for both small-scale and large-scale production.

Specifications

• Memory Capacity: 2,048 kilobits (256 kilobytes)
• Access Time: 55 nanoseconds
• Supply Voltage: 5V ±10%
• Operating Temperature Range: -40°C to +85°C
• Package Type: 32-pin PLCC

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. E (Chip Enable)
13. G (Output Enable)
14. Vcc (+5V Power Supply)
15. Q7
16. Q6
17. Q5
18. Q4
19. Q3
20. Q2
21. Q1
22. Q0
23. Vss (Ground)
24. A14
25. A13
26. A8
27. A9
28. A11
29. A10
30. OE (Output Enable)
31. CE (Chip Enable)
32. WE (Write Enable)

Functional Features

• Easy programming: The AT27C2048-55JC can be programmed using standard PROM programmers.
• High reliability: The stored data is resistant to accidental erasure or modification.
• Efficient storage: The chip provides a compact and reliable solution for storing critical data or program code.

Advantages and Disadvantages

Advantages

• Non-volatile storage ensures data integrity.
• Fast access time allows for quick retrieval of information.
• Low power consumption minimizes energy usage.
• High reliability prevents accidental data loss.

Disadvantages

• Inability to modify or update stored data once programmed.
• Limited storage capacity compared to other memory technologies.

Working Principles

The AT27C2048-55JC operates based on the principle of electrical charge trapping in a floating gate structure. When programmed, charges are trapped in the floating gate, altering the threshold voltage of the memory cell. This change in threshold voltage determines whether the stored bit is read as a logic 0 or logic 1.

Detailed Application Field Plans

The AT27C2048-55JC finds applications in various fields, including: 1. Embedded systems: Used for storing firmware or boot code in microcontrollers. 2. Automotive electronics: Stores critical data for engine control units (ECUs) and other automotive systems. 3. Industrial automation: Provides non-volatile storage for program code in PLCs (Programmable Logic Controllers). 4. Consumer electronics: Used in devices such as gaming consoles, set-top boxes, and digital cameras for storing firmware or configuration data.

Detailed and Complete Alternative Models

1. AT27C4096-70PU: A similar PROM chip with double the storage capacity (4,096 kilobits) and a slower access time of 70 nanoseconds.
2. AT28C256-15PU: An EEPROM (Electrically Erasable Programmable Read-Only Memory) chip with a smaller capacity (256 kilobits) but offers the ability to erase and reprogram the stored data.
3. AT29C010A-12PC: A Flash memory chip with a capacity of 1 megabit (128 kilobytes) and a faster access time of 12 nanoseconds.

Note: These alternative models are provided as examples and may not be an exhaustive list.

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