AT25040B-SSHL-T

Product Overview

Category

AT25040B-SSHL-T belongs to the category of Serial EEPROM (Electrically Erasable Programmable Read-Only Memory) chips.

Use

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

Characteristics

• Non-volatile memory: The data stored in AT25040B-SSHL-T remains intact even when power is removed.
• High endurance: This chip can withstand a large number of read and write cycles.
• Small form factor: The compact size of AT25040B-SSHL-T makes it suitable for space-constrained applications.
• Low power consumption: It operates on low power, making it energy-efficient.

Package

AT25040B-SSHL-T is available in an 8-pin SOIC (Small Outline Integrated Circuit) package.

Essence

The essence of AT25040B-SSHL-T lies in its ability to provide reliable and non-volatile storage for critical data in electronic devices.

Packaging/Quantity

This product is typically sold in reels containing a specific quantity of chips. The exact packaging and quantity may vary depending on the supplier.

Specifications

• Memory capacity: 4 kilobits (512 bytes)
• Interface: Serial Peripheral Interface (SPI)
• Operating voltage: 1.7V to 5.5V
• Operating temperature range: -40°C to +85°C
• Write endurance: 1 million cycles
• Data retention: 100 years

Detailed Pin Configuration

1. Chip Select (/CS): Enables communication with the chip when set to a low logic level.
2. Serial Clock (SCK): Provides the clock signal for 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 low logic level, prevents write operations.
6. VCC: Power supply voltage.
7. Ground (GND): Common ground reference.
8. Hold (/HOLD): Pauses ongoing operations when set to a low logic level.

Functional Features

• Byte-level Read/Write: Allows individual bytes of data to be read from or written to the chip.
• Sequential Read: Supports continuous reading of multiple bytes without the need for repeated address input.
• Software Protection: Provides a write protection mechanism to prevent accidental modification of stored data.
• Chip Erase: Allows erasing the entire memory content in a single operation.
• Write Enable Latch: Ensures that write operations are executed only when explicitly enabled.

Advantages and Disadvantages

Advantages

• Compact size and low power consumption make it suitable for portable devices.
• High endurance ensures long-term reliability.
• Wide operating voltage range allows compatibility with various systems.
• Easy integration with microcontrollers through the SPI interface.

Disadvantages

• Limited storage capacity compared to other memory technologies.
• Relatively slower data transfer rate compared to some alternative models.
• Vulnerable to electromagnetic interference due to its small form factor.

Working Principles

AT25040B-SSHL-T utilizes EEPROM technology, which allows for electrically erasing and reprogramming of data. It consists of a grid of memory cells that can be individually addressed and modified. The data is stored by trapping electric charges within these cells, which can be selectively erased and rewritten using specific electrical signals.

Detailed Application Field Plans

AT25040B-SSHL-T finds applications in various fields, including: 1. Automotive electronics: Used for storing vehicle configuration data, mileage records, and other critical information. 2. Industrial automation: Enables storage of calibration data, device settings, and event logs in programmable logic controllers (PLCs). 3. Consumer electronics: Used in smart TVs, set-top boxes, and gaming consoles for storing user preferences, firmware updates, and system configuration.

Detailed and Complete Alternative Models

1. AT25080B-SSHL-T: Similar to AT25040B-SSHL-T but with double the memory capacity (8 kilobits).
2. AT25160B-SSHL-T: Offers even higher memory capacity (16 kilobits) while maintaining compatibility with the same package and interface.

These alternative models provide increased storage capacity options for applications that require more memory.

In conclusion, AT25040B-SSHL-T is a reliable and compact Serial EEPROM chip that offers non-volatile data storage for various electronic devices. Its high endurance, low power consumption, and easy integration make it suitable for a wide range of applications. However, its limited storage capacity and susceptibility to electromagnetic interference should be considered when selecting this chip for specific projects.