AT28HC256-12SI

Product Overview

Category

AT28HC256-12SI 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 consumer electronics.

Characteristics

• High-speed operation: The AT28HC256-12SI offers fast read and write speeds, making it suitable for applications that require quick access to stored data.
• Low power consumption: This EEPROM chip is designed to minimize power usage, making it ideal for battery-powered devices.
• Large storage capacity: With a capacity of 256 kilobits, the AT28HC256-12SI provides ample space for storing critical data.
• Reliable data retention: The chip ensures data integrity even in harsh environmental conditions.

Package

The AT28HC256-12SI comes in a Small-Outline Integrated Circuit (SOIC) package. This package type allows for easy integration into circuit boards and provides mechanical protection to the chip.

Essence

The essence of the AT28HC256-12SI lies in its ability to store and retrieve data reliably and quickly, while consuming minimal power.

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's specifications.

Specifications

• Operating voltage: 2.7V to 5.5V
• Access time: 120 ns
• Standby current: 10 µA (typical)
• Write endurance: 100,000 cycles
• Data retention: 10 years

Detailed Pin Configuration

The AT28HC256-12SI has a total of 28 pins, which are assigned specific functions. 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. 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. /OE - Output Enable
17. /WE - Write Enable
18. /CE - Chip Enable
19. I/O0 - Data Input/Output
20. I/O1 - Data Input/Output
21. I/O2 - Data Input/Output
22. I/O3 - Data Input/Output
23. I/O4 - Data Input/Output
24. I/O5 - Data Input/Output
25. I/O6 - Data Input/Output
26. I/O7 - Data Input/Output
27. Vcc - Power Supply
28. GND - Ground

Functional Features

• High-speed operation allows for quick access to stored data.
• Low power consumption ensures efficient use of energy in battery-powered devices.
• Reliable data retention guarantees the integrity of stored information over extended periods.
• Easy integration into circuit boards due to the Small-Outline Integrated Circuit (SOIC) package.

Advantages and Disadvantages

Advantages

• Fast read and write speeds
• Low power consumption
• Large storage capacity
• Reliable data retention
• Easy integration into circuit boards

Disadvantages

• Limited write endurance (100,000 cycles)
• Higher cost compared to other non-volatile memory options

Working Principles

The AT28HC256-12SI utilizes EEPROM technology to store and retrieve data. It employs a combination of electrically controlled gates and floating gate transistors to achieve non-volatile memory functionality. When data is written, charges are trapped in the floating gate, altering the transistor's behavior and storing the desired information. During read operations, the stored charges are detected, allowing the retrieval of the stored data.

Detailed Application Field Plans

The AT28HC256-12SI 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. Consumer Electronics: Utilized for configuration settings, calibration data, and firmware storage in devices such as smartphones, tablets, and digital cameras.

Detailed and Complete Alternative Models

1. AT28C256-15PU: Similar to the AT28HC256-12SI but operates at a slower speed (150 ns).
2. AT28HC256E-90SU: Offers extended temperature range (-40°C to 85°C) compared