AT27C2048-55PC

Product Overview

Category: Integrated Circuit (IC)

Use: The AT27C2048-55PC is a programmable read-only memory (PROM) IC. It is commonly used for storing fixed data or program code that needs to be retained even when power is turned off.

Characteristics: - Non-volatile memory - 2 Megabit capacity - Operating voltage: 5V - Access time: 55 nanoseconds - Low power consumption - Durable and reliable

Package: The AT27C2048-55PC is available in a 32-pin plastic dual in-line package (PDIP). This package provides easy installation and secure connections.

Essence: The essence of the AT27C2048-55PC is its ability to store data permanently, making it ideal for applications where non-volatile memory is required.

Packaging/Quantity: The AT27C2048-55PC is typically sold in reels or tubes, with each reel or tube containing a specific quantity of ICs. The exact packaging and quantity may vary depending on the supplier.

Specifications

• Memory Capacity: 2 Megabits (256 Kilobytes)
• Organization: 256K x 8 bits
• Supply Voltage: 4.5V to 5.5V
• Access Time: 55 nanoseconds
• Standby Current: 100 microamps maximum
• Operating Temperature Range: -40°C to +85°C
• Package Type: 32-pin PDIP

Pin Configuration

The AT27C2048-55PC has a total of 32 pins, each serving a specific function. Here is the detailed pin configuration:

1. A14 - Address Input
2. A12 - Address Input
3. A7 - Address Input
4. A6 - Address Input
5. A5 - Address Input
6. A4 - Address Input
7. A3 - Address Input
8. A2 - Address Input
9. A1 - Address Input
10. A0 - Address Input
11. VPP - Programming Voltage Input
12. WE - Write Enable Input
13. OE - Output Enable Input
14. CE - Chip Enable Input
15. I/O0 - Data Input/Output
16. I/O1 - Data Input/Output
17. I/O2 - Data Input/Output
18. I/O3 - Data Input/Output
19. I/O4 - Data Input/Output
20. I/O5 - Data Input/Output
21. I/O6 - Data Input/Output
22. I/O7 - Data Input/Output
23. NC - No Connection
24. GND - Ground
25. A8 - Address Input
26. A9 - Address Input
27. A11 - Address Input
28. A10 - Address Input
29. VCC - Power Supply
30. A13 - Address Input
31. BYTE - Byte Organization Input
32. NC - No Connection

Functional Features

The AT27C2048-55PC offers the following functional features:

1. Non-volatile Memory: The data stored in the IC is retained even when power is turned off.
2. High Capacity: With a capacity of 2 Megabits, it can store a large amount of fixed data or program code.
3. Fast Access Time: The access time of 55 nanoseconds ensures quick retrieval of data.
4. Low Power Consumption: The IC operates at low power, making it energy-efficient.
5. Durable and Reliable: The AT27C2048-55PC is designed to withstand harsh environmental conditions and provide reliable performance.

Advantages and Disadvantages

Advantages: - Non-volatile memory ensures data retention even during power loss. - High capacity allows for storing large amounts of data. - Fast access time enables quick retrieval of information. - Low power consumption reduces energy usage. - Durable and reliable construction ensures long-term performance.

Disadvantages: - The AT27C2048-55PC is a one-time programmable memory, meaning the stored data cannot be modified or erased once programmed. - Limited storage capacity compared to other modern memory technologies.

Working Principles

The AT27C2048-55PC operates based on the principle of electrical charge trapping. During programming, the memory cells are selectively charged or uncharged to represent binary data (0s and 1s). Once programmed, the data remains stored in the memory cells until the IC is replaced.

Detailed Application Field Plans

The AT27C2048-55PC finds applications in various fields, including:

1. Embedded Systems: Used for storing firmware or boot code in microcontrollers and microprocessors.
2. Automotive Electronics: Stores critical data