AT28HC256E-12TI

Product Overview

Category

AT28HC256E-12TI 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 AT28HC256E-12TI offers fast read and write operations, making it suitable for applications requiring quick access to stored data.
• Low power consumption: This EEPROM chip is designed to minimize power consumption, making it ideal for battery-powered devices.
• Large storage capacity: With a capacity of 256 kilobits (32 kilobytes), this chip provides ample space for storing critical data.
• Reliable data retention: The AT28HC256E-12TI ensures data integrity with its excellent endurance and long-term data retention capabilities.
• Wide operating voltage range: It can operate within a voltage range of 2.7V to 5.5V, allowing compatibility with various systems.
• Extended temperature range: This chip can withstand temperatures ranging from -40°C to +85°C, making it suitable for harsh environments.

Package and Quantity

The AT28HC256E-12TI is available in a standard 28-pin Thin Small Outline Package (TSOP). It is typically sold in reels or tubes containing multiple units.

Specifications

• Organization: 32K x 8 bits
• Operating Voltage Range: 2.7V to 5.5V
• Access Time: 120 ns
• Standby Current: 10 µA (typical)
• Operating Temperature Range: -40°C to +85°C
• Package Type: TSOP-28

Pin Configuration

The AT28HC256E-12TI has a total of 28 pins, each serving a specific function. The pin configuration is as follows:

1. A16
2. A15
3. A12
4. A7
5. A6
6. A5
7. A4
8. A3
9. A2
10. A1
11. A0
12. CE (Chip Enable)
13. OE (Output Enable)
14. WE (Write Enable)
15. I/O0
16. I/O1
17. I/O2
18. I/O3
19. VSS (Ground)
20. NC (No Connection)
21. I/O4
22. I/O5
23. I/O6
24. I/O7
25. A8
26. A9
27. A11
28. VCC (Power Supply)

Functional Features

• High-speed read and write operations enable quick access to stored data.
• Low power consumption ensures efficient energy usage in battery-powered devices.
• Reliable data retention and endurance ensure the integrity of stored information.
• Compatibility with a wide range of operating voltages allows for versatile application in different systems.
• Extended temperature range enables operation in harsh environmental conditions.

Advantages and Disadvantages

Advantages

• Fast read and write operations
• Low power consumption
• Large storage capacity
• Excellent data retention
• Wide operating voltage range
• Extended temperature range

Disadvantages

• Limited availability in certain package types
• Relatively higher cost compared to other memory technologies

Working Principles

The AT28HC256E-12TI utilizes EEPROM technology, which allows for non-volatile data storage. It uses electrically controlled floating gate transistors to store and retrieve data. When data needs to be written, a high voltage is applied to the control gate, which traps electrons in the floating gate. This alters the transistor's threshold voltage, representing a binary value. To read data, the transistor's threshold voltage is measured, determining the stored information.

Application Field Plans

The AT28HC256E-12TI finds applications in various fields, including: 1. Microcontrollers: Used for storing firmware, configuration data, and calibration values. 2. Computers: Used for storing BIOS settings, system parameters, and encryption keys. 3. Consumer Electronics: Used for storing user preferences, device settings, and firmware updates.

Alternative Models

Several alternative models with similar specifications and features are available as alternatives to the AT28HC256E-12TI. Some notable options include: - AT28C256 - AT28HC256 - AT28BV256 - AT28LV256

These alternative models offer compatibility and can be used as drop-in replacements for the AT28HC256E-12TI in many applications.

In conclusion, the AT28HC256E-12TI is a high-speed, low-power EEPROM chip that provides reliable non-volatile data storage. With its large capacity, wide