AT28HC64B-90PI

Product Overview

Category

AT28HC64B-90PI 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 AT28HC64B-90PI 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.
• Non-volatile memory: The stored data remains intact even when the power supply is disconnected.
• High endurance: The AT28HC64B-90PI can withstand a large number of erase/write cycles, ensuring long-term reliability.

Package

The AT28HC64B-90PI comes in a 28-pin plastic dual in-line package (PDIP), which provides easy integration into circuit boards.

Essence

The essence of this product lies in its ability to store and retrieve data reliably, quickly, and with low power consumption.

Packaging/Quantity

The AT28HC64B-90PI 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 manufacturer.

Specifications

• Memory capacity: 64 kilobits (8 kilobytes)
• Operating voltage: 2.7V to 5.5V
• Access time: 90 nanoseconds
• Data retention: Up to 10 years
• Endurance: Minimum 100,000 erase/write cycles
• Interface: Parallel

Detailed Pin Configuration

The AT28HC64B-90PI has a total of 28 pins, each serving a specific purpose. 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. VCC: Power supply voltage
10. A8: Address input
11. A9: Address input
12. A10: Address input
13. OE: Output enable
14. CE: Chip enable
15. WE: Write enable
16. I/O0: Data input/output
17. I/O1: Data input/output
18. I/O2: Data input/output
19. I/O3: Data input/output
20. I/O4: Data input/output
21. I/O5: Data input/output
22. I/O6: Data input/output
23. I/O7: Data input/output
24. GND: Ground
25. NC: No connection
26. NC: No connection
27. NC: No connection
28. NC: No connection

Functional Features

• High-speed operation allows for quick access to stored data.
• Low power consumption ensures efficient use of energy in battery-powered devices.
• Non-volatile memory retains data even when the power supply is disconnected.
• High endurance enables reliable and long-lasting data storage.

Advantages and Disadvantages

Advantages

• Fast read and write operations
• Low power consumption
• Reliable data retention
• High endurance

Disadvantages

• Limited memory capacity compared to other storage technologies
• Higher cost per unit compared to some alternatives

Working Principles

The AT28HC64B-90PI utilizes EEPROM technology, which allows for electrically erasing and reprogramming of data. It consists of a grid of memory cells, each capable of storing a single bit of information. The data is written to the memory cells by applying appropriate voltage levels to the address and data pins. Reading the stored data involves activating the chip enable and output enable pins to access the desired memory location.

Detailed Application Field Plans

The AT28HC64B-90PI finds applications in various fields where non-volatile data storage is required. Some specific application areas include:

1. Microcontrollers: Used for storing firmware, configuration settings, and calibration data.
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. AT28C64B-15PU: Similar EEPROM chip with a lower access time of 150 nanoseconds.
2. AT28HC256-12PC: Higher capacity EEPROM chip with 256 kilobits (32 kilobytes) of memory.
3. AT29C010A