AT28C64B-15PI

Product Overview

Category

AT28C64B-15PI belongs to the category of electrically erasable programmable read-only memory (EEPROM) chips.

Use

This product is commonly used for non-volatile data storage in various electronic devices such as microcontrollers, computers, and consumer electronics.

Characteristics

• Non-volatile: The stored data remains even when power is removed.
• Electrically erasable: Data can be erased and reprogrammed electronically.
• High storage capacity: The AT28C64B-15PI has a capacity of 64 kilobits (8 kilobytes).
• Low power consumption: It operates on low voltage and consumes minimal power during read and write operations.

Package

The AT28C64B-15PI comes in a 28-pin plastic dual in-line package (PDIP).

Essence

The essence of this product lies in its ability to store and retrieve digital information reliably and efficiently.

Packaging/Quantity

The AT28C64B-15PI is typically packaged in tubes or trays, with quantities varying depending on customer requirements.

Specifications

• Supply voltage: 5V
• Access time: 150 nanoseconds
• Operating temperature range: -40°C to +85°C
• Endurance: 10,000 erase/write cycles
• Data retention: 10 years

Detailed Pin Configuration

The AT28C64B-15PI has a total of 28 pins, each serving a specific function. The pin configuration is as follows:

1. A0-A12: Address inputs
2. CE: Chip enable input
3. OE: Output enable input
4. WE: Write enable input
5. I/O0-I/O7: Data input/output lines
6. VCC: Power supply
7. GND: Ground

Functional Features

• High-speed operation: The AT28C64B-15PI offers fast access times, allowing for efficient data retrieval and storage.
• Easy integration: It can be easily interfaced with various microcontrollers and other electronic components.
• Reliable data retention: The EEPROM technology ensures that stored data remains intact even in the absence of power.
• Flexible programming options: The chip supports both byte-wise and page-wise programming, providing flexibility in data manipulation.

Advantages and Disadvantages

Advantages

• Non-volatile memory: Data is retained even during power loss.
• Electrically erasable: Allows for easy reprogramming without the need for physical removal.
• High storage capacity: Offers ample space for storing critical data.
• Low power consumption: Operates efficiently, minimizing power usage.

Disadvantages

• Limited endurance: The EEPROM has a finite number of erase/write cycles.
• Relatively slower access times compared to other types of memory.
• Higher cost per bit compared to other memory technologies.

Working Principles

The AT28C64B-15PI utilizes EEPROM technology, which employs a floating gate transistor structure. This structure allows for the trapping and releasing of electric charge, enabling data storage and erasure. When data is written, an electrical charge is trapped in the floating gate, representing a logical "1" or "0". To erase the data, the charge is removed from the floating gate using an electrical pulse. The stored data can be read by applying appropriate voltage levels to the address and control inputs.

Detailed Application Field Plans

The AT28C64B-15PI finds applications in various fields, including:

1. Embedded systems: Used for firmware storage in microcontrollers and embedded devices.
2. Computer peripherals: Employed in printers, scanners, and network devices for storing configuration data.
3. Automotive electronics: Utilized in automotive control units for storing calibration data and firmware.
4. Industrial automation: Used in programmable logic controllers (PLCs) for storing program code and configuration parameters.

Detailed and Complete Alternative Models

1. AT28C64B-15SU: Surface mount version of the AT28C64B-15PI.
2. AT28C256-15PU: Higher capacity EEPROM with 256 kilobits (32 kilobytes) and a different pin configuration.
3. AT24C02C-SSHM-T: Serial EEPROM with 2 kilobits (256 bytes) and a smaller package size.

These alternative models offer different capacities, package types, and pin configurations to suit specific application requirements.

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