AT28HC64B-90SI

Product Overview

Category

AT28HC64B-90SI belongs to the category of non-volatile memory integrated circuits.

Use

This product is primarily used for data storage in various electronic devices such as microcontrollers, embedded systems, and consumer electronics.

Characteristics

• Non-volatile: The stored data is retained even when power is removed.
• High capacity: The AT28HC64B-90SI has a storage capacity of 64 kilobits (8 kilobytes).
• High-speed operation: It operates at a speed of 90 nanoseconds, allowing for fast read and write operations.
• Low power consumption: The device is designed to minimize power consumption, making it suitable for battery-powered applications.

Package

The AT28HC64B-90SI is available in a Small-Outline Integrated Circuit (SOIC) package. This package provides a compact form factor and ease of integration into electronic systems.

Essence

The essence of AT28HC64B-90SI lies in its ability to provide reliable and high-capacity non-volatile memory storage for various electronic devices.

Packaging/Quantity

The AT28HC64B-90SI is typically packaged in reels or tubes, with each reel or tube containing a specific quantity of devices. The exact packaging and quantity may vary depending on the manufacturer and supplier.

Specifications

• Storage Capacity: 64 kilobits (8 kilobytes)
• Operating Speed: 90 nanoseconds
• Supply Voltage: 2.7V - 5.5V
• Operating Temperature Range: -40°C to +85°C
• Interface: Parallel

Detailed Pin Configuration

The AT28HC64B-90SI has a total of 28 pins. The pin configuration is as follows:

1. A0
2. A1
3. A2
4. A3
5. A4
6. A5
7. A6
8. A7
9. VCC
10. CE
11. OE
12. WE
13. I/O0
14. I/O1
15. I/O2
16. I/O3
17. I/O4
18. I/O5
19. I/O6
20. I/O7
21. NC
22. GND
23. NC
24. NC
25. NC
26. NC
27. NC
28. NC

Functional Features

• Random Access: The AT28HC64B-90SI allows for random access to any location within the memory array, enabling efficient data retrieval.
• High Reliability: This product offers high reliability with a guaranteed minimum number of erase/write cycles, ensuring data integrity over an extended period.
• Easy Integration: The device can be easily integrated into existing electronic systems due to its standard parallel interface and compact package.

Advantages and Disadvantages

Advantages

• Non-volatile memory ensures data retention even during power loss.
• High storage capacity for various applications.
• Fast operation speed enables quick data access.
• Low power consumption extends battery life in portable devices.

Disadvantages

• Limited storage capacity compared to other memory technologies.
• Parallel interface may require additional pins and complex circuitry.

Working Principles

The AT28HC64B-90SI utilizes Flash memory technology to store and retrieve data. It employs a combination of floating-gate transistors and control circuitry to achieve non-volatile storage. When data is written, charges are trapped in the floating gate, altering the transistor's behavior and preserving the stored information. During read operations, the stored charges are sensed, allowing the retrieval of the stored data.

Detailed Application Field Plans

The AT28HC64B-90SI finds applications in various fields, including:

1. Microcontrollers: Used for program storage and data logging.
2. Embedded Systems: Provides non-volatile memory for system configuration and firmware storage.
3. Consumer Electronics: Enables data storage in devices such as digital cameras, printers, and set-top boxes.

Detailed and Complete Alternative Models

1. AT28C64B-15SU: Similar to AT28HC64B-90SI but operates at a slower speed of 150 nanoseconds.
2. AT28HC256-12SI: Offers higher storage capacity of 256 kilobits (32 kilobytes) with a speed of 120 nanoseconds.
3. AT28HC16B-70SI: Lower capacity variant with 16 kilobits (2 kilobytes) and a speed of 70 nanoseconds.

These alternative models provide options with varying capacities and speeds to suit different application requirements.

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