AT28HC256F-90SU-T

Product Overview

Category

AT28HC256F-90SU-T 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
• Low power consumption
• Non-volatile memory
• Large storage capacity
• Reliable data retention
• Easy to interface with other electronic components

Package

AT28HC256F-90SU-T comes in a Small-Outline Integrated Circuit (SOIC) package. This package provides a compact form factor and allows for easy integration into circuit boards.

Essence

The essence of AT28HC256F-90SU-T lies in its ability to store and retrieve data reliably, while offering high-speed operation and low power consumption.

Packaging/Quantity

AT28HC256F-90SU-T is typically packaged in reels or tubes, containing a specific quantity of chips per package. The exact packaging and quantity may vary depending on the manufacturer's specifications.

Specifications

• Operating Voltage: 2.7V to 5.5V
• Storage Capacity: 256 kilobits (32 kilobytes)
• Access Time: 90 nanoseconds
• Interface: Serial Peripheral Interface (SPI)
• Data Retention: Up to 10 years
• Endurance: 100,000 write cycles

Detailed Pin Configuration

The AT28HC256F-90SU-T chip has a total of 8 pins, each serving a specific purpose:

1. Chip Select (/CS): Enables communication with the chip when set to a logic low.
2. Serial Clock (SCK): Provides the clock signal for synchronous data transfer.
3. Serial Data Input (SI): Transfers data from the microcontroller to the chip.
4. Serial Data Output (SO): Transfers data from the chip to the microcontroller.
5. Write Protect (/WP): When set to a logic low, prevents write operations on the chip.
6. VCC: Power supply voltage input.
7. Ground (GND): Common ground reference.
8. Hold (/HOLD): Pauses ongoing operations when set to a logic low.

Functional Features

• High-speed data transfer
• Low power consumption during both active and standby modes
• Hardware and software write protection options
• Flexible erase and program operations
• Automatic page write and sector erase functions
• Software-controlled output enable/disable

Advantages and Disadvantages

Advantages

• Fast access time allows for efficient data retrieval.
• Low power consumption prolongs battery life in portable devices.
• Reliable data retention ensures long-term storage integrity.
• Flexible erase and program operations offer versatility in data management.
• Hardware and software write protection options enhance data security.

Disadvantages

• Limited storage capacity compared to other memory technologies.
• Relatively higher cost per unit compared to some alternative memory solutions.
• Requires an external microcontroller or interface for data transfer and control.

Working Principles

AT28HC256F-90SU-T utilizes EEPROM technology, which allows for non-volatile data storage. The chip consists of memory cells organized into pages and sectors. Data can be written, read, and erased using specific commands sent through the serial interface. The chip operates based on the principles of electrical charge trapping and release within the memory cells.

Detailed Application Field Plans

AT28HC256F-90SU-T finds applications in various fields, including:

1. Embedded Systems: Used for firmware storage in microcontrollers and system-on-chip devices.
2. Automotive Electronics: Stores critical data such as calibration parameters and configuration settings.
3. Industrial Control Systems: Provides non-volatile memory for storing program code and data in control units.
4. Consumer Electronics: Used in devices like smart TVs, set-top boxes, and gaming consoles for firmware storage.

Detailed and Complete Alternative Models

1. AT28C256-15PU: Similar EEPROM chip with a lower access time of 150 nanoseconds.
2. AT24C256C-SSHL-T: I2C-compatible EEPROM chip with a similar storage capacity and low power consumption.
3. M93C86-WMN6TP: Serial EEPROM chip with a higher storage capacity of 16 kilobits (2 kilobytes) and a faster access time of 5 microseconds.

These alternative models offer different specifications and features, allowing users to choose the most suitable option based on their specific requirements.

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