AT27C2048-12PC

Product Overview

Category

AT27C2048-12PC belongs to the category of programmable read-only memory (PROM) chips.

Use

This chip is primarily used for storing data that needs to be permanently written and cannot be modified or erased. It finds applications in various electronic devices where non-volatile memory is required.

Characteristics

• Non-volatile: The stored data remains intact even when power is removed.
• High storage capacity: The AT27C2048-12PC has a capacity of 2,048 kilobits (256 kilobytes).
• Fast access time: It operates at a speed of 120 nanoseconds.
• Low power consumption: The chip is designed to minimize power usage.
• Durable: It can withstand multiple read operations without degradation.

Package and Quantity

The AT27C2048-12PC is available in a 32-pin plastic dual in-line package (PDIP). It is typically sold in quantities of one unit or multiples thereof.

Specifications

• Memory Capacity: 2,048 kilobits (256 kilobytes)
• Access Time: 120 nanoseconds
• Supply Voltage: 5 volts
• Operating Temperature Range: -40°C to +85°C
• Pin Count: 32
• Package Type: PDIP

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

• Read Operation: The chip allows for the retrieval of stored data through the appropriate address inputs.
• Write Protection: The write enable (WE) pin can be used to protect the memory contents from accidental modification.
• Output Enable: The output enable (OE) pin controls the data output from the chip.
• Chip Enable: The chip enable (CE) pin activates or deactivates the chip.

Advantages and Disadvantages

Advantages

• Non-volatile memory ensures data retention even during power loss.
• High storage capacity suitable for various applications.
• Fast access time enables quick retrieval of data.
• Low power consumption helps conserve energy.
• Durable design allows for multiple read operations without degradation.

Disadvantages

• Inability to modify or erase stored data limits flexibility.
• Limited storage capacity compared to other memory technologies.
• Relatively slower access time compared to some modern memory devices.

Working Principles

The AT27C2048-12PC utilizes a technology known as electrically programmable read-only memory (EPROM). It stores data using a grid of transistors that can be selectively programmed to represent binary information. Once programmed, the data remains fixed and can only be read.

Detailed Application Field Plans

The AT27C2048-12PC finds applications in various fields, including: 1. Embedded systems: Used for firmware storage in microcontrollers and other embedded devices. 2. Automotive electronics: Stores critical data such as calibration values and configuration settings. 3. Industrial control systems: Provides non-volatile memory for storing program code and configuration data. 4. Consumer electronics: Used in devices like gaming consoles, set-top boxes, and audio players for firmware storage.

Detailed and Complete Alternative Models

1. AT27C4096-12PC: A similar PROM chip with double the capacity (4,096 kilobits).
2. AT28C256-15PU: An electrically erasable programmable read-only memory (EEPROM) chip with a capacity of 256 kilobits.
3. AM29F040B-90JC: A flash memory chip with a capacity of 4 megabits (512 kilobytes).

These alternative models offer different capacities and erase/write capabilities to suit specific application requirements.

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