AT28C64E-12TI

Product Overview

Category

AT28C64E-12TI belongs to the category of electrically erasable programmable read-only memory (EEPROM) chips.

Use

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

Characteristics

• Electrically erasable: The AT28C64E-12TI can be erased and reprogrammed electronically, making it convenient for updating or modifying stored data.
• High storage capacity: This chip has a capacity of 64 kilobits, allowing for the storage of a significant amount of data.
• Low power consumption: The AT28C64E-12TI operates efficiently with low power requirements.
• Fast access time: With a speed rating of 12 nanoseconds, this chip enables quick data retrieval.

Package

The AT28C64E-12TI is available in a standard integrated circuit (IC) package. It is commonly found in a dual in-line package (DIP), which consists of two parallel rows of pins.

Essence

The essence of the AT28C64E-12TI lies in its ability to provide reliable and non-volatile data storage in electronic devices.

Packaging/Quantity

This product is typically packaged in reels or tubes, with each containing a specific quantity of chips. The exact packaging and quantity may vary depending on the manufacturer.

Specifications

• Capacity: 64 kilobits
• Access Time: 12 nanoseconds
• Supply Voltage: 5 volts
• Operating Temperature Range: -40°C to +85°C
• Data Retention: 10 years

Detailed Pin Configuration

The AT28C64E-12TI features a total of 28 pins, each serving a specific purpose. The pin configuration is as follows:

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

Functional Features

The AT28C64E-12TI offers the following functional features:

• Byte-wise programmable: This chip allows individual bytes to be programmed or erased, providing flexibility in data manipulation.
• Automatic erase-before-write: Before new data can be written, the AT28C64E-12TI automatically erases the targeted memory location, ensuring clean and reliable programming.
• High endurance: This EEPROM chip can withstand a large number of erase/write cycles, making it suitable for applications that require frequent data updates.

Advantages and Disadvantages

Advantages

• Non-volatile storage: The AT28C64E-12TI retains data even when power is removed, ensuring data integrity.
• Fast access time: With a speed rating of 12 nanoseconds, this chip enables quick data retrieval.
• Flexible programming: The byte-wise programmability allows for efficient data manipulation.

Disadvantages

• Limited storage capacity: While the AT28C64E-12TI offers a decent capacity of 64 kilobits, it may not be sufficient for applications that require larger amounts of data storage.
• Relatively higher cost: Compared to other memory options, EEPROM chips tend to be more expensive.

Working Principles

The AT28C64E-12TI operates based on the principles of electrically erasable programmable read-only memory. It utilizes a floating gate transistor structure, where charges can be trapped or released to represent binary data (0s and 1s). When data needs to be written, an electrical charge is applied to the specific memory location, altering the charge state of the floating gate. To erase data, a higher voltage is applied to remove the trapped charges. The stored data can then be read by detecting the presence or absence of charges in the floating gate.

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