AT27C020-12TI

Product Overview

Category

AT27C020-12TI belongs to the category of programmable read-only memory (PROM) chips.

Use

This product is primarily used for storing and retrieving data in electronic devices. It provides non-volatile memory storage, meaning that the stored data remains even when power is removed.

Characteristics

• Non-volatile memory: Retains data even without power supply.
• Programmable: Allows users to write data into the memory.
• Read-only: Once programmed, the data cannot be modified or erased.
• High capacity: The AT27C020-12TI has a capacity of 2 megabits (256 kilobytes).

Package

The AT27C020-12TI is available in a standard 32-pin plastic dual in-line package (PDIP). This package ensures compatibility with various electronic devices and facilitates easy integration into circuit boards.

Essence

The essence of the AT27C020-12TI lies in its ability to provide reliable and secure non-volatile memory storage for electronic devices. It offers a cost-effective solution for applications that require permanent data storage.

Packaging/Quantity

The AT27C020-12TI is typically packaged in reels or tubes, depending on the manufacturer's specifications. The quantity per package varies but is commonly around 100 units.

Specifications

• Operating voltage: 5V
• Access time: 120 ns
• Organization: 256K x 8 bits
• Erase/write cycles: 10,000 minimum
• Data retention: 20 years minimum
• Temperature range: -40°C to +85°C

Detailed Pin Configuration

The AT27C020-12TI features 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. OE: Output enable
14. CE: Chip enable
15. WE: Write enable
16. NC: No connection
17. D0: Data input/output
18. D1: Data input/output
19. D2: Data input/output
20. D3: Data input/output
21. D4: Data input/output
22. D5: Data input/output
23. D6: Data input/output
24. D7: Data input/output
25. GND: Ground
26. NC: No connection
27. NC: No connection
28. NC: No connection
29. NC: No connection
30. NC: No connection
31. NC: No connection
32. VCC: Power supply

Functional Features

• High-speed access: The AT27C020-12TI offers fast access times, allowing for efficient data retrieval.
• Low power consumption: This chip is designed to consume minimal power during operation, making it suitable for battery-powered devices.
• Reliable data retention: The stored data remains intact for a minimum of 20 years, ensuring long-term reliability.
• Easy integration: The standard pin configuration and package make it easy to integrate the AT27C020-12TI into various electronic systems.

Advantages and Disadvantages

Advantages

• Non-volatile memory ensures data persistence.
• High capacity allows for storing large amounts of data.
• Fast access times enable quick data retrieval.
• Low power consumption prolongs battery life.
• Easy integration into electronic systems.

Disadvantages

• Data cannot be modified or erased once programmed.
• Limited erase/write cycles (10,000 minimum).
• Requires external programming voltage (VPP) for writing data.

Working Principles

The AT27C020-12TI operates based on the principle of electrical charge trapping. During programming, a high voltage is applied to the specific memory cells, causing electrons to be trapped in the floating gate. These trapped charges represent the stored data. When reading the data, the chip detects the presence or absence of charges in the memory cells, translating it into binary information.

Detailed Application Field Plans

The AT27C020-12TI finds applications in various fields that require reliable and non-volatile data storage. Some potential application areas include:

1. Embedded systems: The chip can store firmware, boot code, or configuration data in embedded systems such as microcontrollers and IoT devices.
2. Automotive electronics: It can be used for storing critical data in automotive applications, including engine control units (ECUs), infotainment systems