AT28HC256-70TU

Product Overview

Category

AT28HC256-70TU 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 AT28HC256-70TU 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), the AT28HC256-70TU provides ample space for storing critical data.
• Reliable data retention: The EEPROM ensures data integrity even in harsh environmental conditions, thanks to its robust design.

Package

The AT28HC256-70TU comes in a standard Thin Small Outline Package (TSOP) with 28 pins. This package type allows for easy integration into circuit boards and facilitates efficient heat dissipation.

Essence

The essence of the AT28HC256-70TU lies in its ability to provide reliable, non-volatile data storage with high-speed access and low power consumption.

Packaging/Quantity

The AT28HC256-70TU is typically packaged in reels or tubes, with each reel or tube containing a specific quantity of chips. The exact packaging and quantity may vary depending on the supplier.

Specifications

• Operating voltage: 2.7V to 5.5V
• Access time: 70 nanoseconds
• Standby current: 10 microamps (max)
• Write current: 5 milliamps (max)
• Data retention: 10 years (minimum)

Detailed Pin Configuration

The AT28HC256-70TU has a total of 28 pins, each serving a specific function. 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. A15 - Address Input
17. /OE - Output Enable
18. /WE - Write Enable
19. /CE - Chip Enable
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. /WP - Write Protect

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 even in challenging environmental conditions.
• Easy integration into circuit boards due to the standard TSOP package.

Advantages and Disadvantages

Advantages

• Fast read and write operations
• Low power consumption
• Large storage capacity
• Robust data retention

Disadvantages

• Limited compatibility with certain older systems or devices
• Relatively higher cost compared to other memory technologies

Working Principles

The AT28HC256-70TU utilizes EEPROM technology, which allows for electrically erasing and reprogramming data. It stores information in a grid of memory cells that can be individually accessed and modified using specific address inputs and control signals.

Detailed Application Field Plans

The AT28HC256-70TU finds applications in various fields, including: 1. Microcontrollers: Used for storing firmware, configuration data, and calibration values. 2. Computers: Employed in BIOS chips and other non-volatile memory requirements. 3. Consumer Electronics: Utilized in devices such as smart TVs, set-top boxes, and gaming consoles for data storage purposes.

Detailed and Complete Alternative Models

1. AT28C256-15PU: Similar to the AT28HC256-70TU but operates at a slower speed (150 nanoseconds).
2. AT28HC256E-90SU: Offers higher endurance and faster write times compared to the AT28HC256-70TU.
3. AT28HC256L-90TI: Low-power variant with extended temperature range capabilities.

These alternative models provide options with varying specifications and features to suit different application