AT28HC256F-12FM/883

Product Overview

Category

AT28HC256F-12FM/883 belongs to the category of high-speed, low-power Electrically Erasable Programmable Read-Only Memory (EEPROM) chips.

Use

This product is primarily used for non-volatile data storage in various electronic devices such as microcontrollers, computers, and communication systems.

Characteristics

• High-speed operation: The AT28HC256F-12FM/883 offers fast read and write access times, making it suitable for applications requiring quick data retrieval.
• Low power consumption: It is designed to operate efficiently with minimal power requirements, making it ideal for battery-powered devices.
• Large storage capacity: With a capacity of 256 kilobits, this EEPROM chip can store a significant amount of data.
• Reliable data retention: The stored data remains intact even when the power supply is disconnected or interrupted.
• Extended temperature range: The AT28HC256F-12FM/883 is capable of operating reliably within a wide temperature range, making it suitable for harsh environments.

Package and Quantity

The AT28HC256F-12FM/883 is available in a ceramic package. It is typically sold in bulk quantities, with packaging options ranging from trays to tubes, depending on the supplier.

Specifications

• Operating voltage: 2.7V to 5.5V
• Access time: 120 ns
• Standby current: 10 µA (max)
• Data retention: 100 years (min)
• Package type: Ceramic Dual In-Line Package (DIP)
• Pin count: 28 pins

Detailed Pin Configuration

The AT28HC256F-12FM/883 has a total of 28 pins, each serving a specific function. Here is a detailed pin configuration:

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. A8 - Address Input
10. A9 - Address Input
11. A10 - Address Input
12. A11 - Address Input
13. A12 - Address Input
14. A13 - Address Input
15. A14 - Address Input
16. A15 - Address Input
17. CE - Chip Enable Input
18. OE - Output Enable Input
19. WE - Write Enable Input
20. I/O0 - Data Input/Output
21. I/O1 - Data Input/Output
22. I/O2 - Data Input/Output
23. I/O3 - Data Input/Output
24. VCC - Power Supply
25. GND - Ground
26. NC - No Connection
27. NC - No Connection
28. NC - No Connection

Functional Features

• High-speed operation allows for quick data access and transfer.
• Low power consumption ensures efficient use of energy, making it suitable for battery-powered devices.
• Reliable data retention ensures that stored information remains intact over extended periods.
• Extended temperature range enables reliable operation in various environments.

Advantages and Disadvantages

Advantages

• Fast read and write access times
• Low power consumption
• Large storage capacity
• Reliable data retention
• Wide operating temperature range

Disadvantages

• Limited pin count may restrict the number of addressable locations
• Higher cost compared to other non-volatile memory options

Working Principles

The AT28HC256F-12FM/883 operates based on the principles of EEPROM technology. It utilizes a combination of electrically controlled floating gate transistors to store and retrieve data. When a write operation is performed, an electrical charge is applied to the floating gate, altering its threshold voltage and storing the desired data. During a read operation, the stored charge is measured, allowing the retrieval of the stored information.

Detailed Application Field Plans

The AT28HC256F-12FM/883 finds applications in various fields, including:

1. Microcontrollers: Used for program storage and data logging.
2. Computers: Employed for BIOS (Basic Input/Output System) storage and firmware updates.
3. Communication Systems: Utilized for configuration storage and parameter settings.

Detailed and Complete Alternative Models

1. AT28C256 - Similar capacity EEPROM chip with slower access times.
2. AT28HC256 - Higher-speed version of the AT28HC256F-12FM/883.
3. AT28HC256L - Low-power variant with reduced power consumption.

These alternative models offer different trade-offs in terms of speed, power consumption, and cost, providing flexibility based on specific application requirements.

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