AT25040B-XHL-T

Product Overview

Category

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

Use

This product is primarily used for non-volatile data storage in various electronic devices such as microcontrollers, automotive systems, industrial equipment, and consumer electronics.

Characteristics

• Non-volatile memory: The AT25040B-XHL-T retains stored data even when power is removed.
• High endurance: This chip can withstand a large number of read/write cycles.
• Low power consumption: It operates at low voltage levels, making it suitable for battery-powered devices.
• Small form factor: The AT25040B-XHL-T comes in a compact package, saving valuable board space.
• High-speed operation: It offers fast read and write access times.

Package and Quantity

The AT25040B-XHL-T is available in an 8-pin SOIC (Small Outline Integrated Circuit) package. It is typically sold in reels containing a specified quantity, usually ranging from a few hundred to several thousand units per reel.

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
• Data retention: Up to 100 years
• Write endurance: 1 million cycles

Pin Configuration

The AT25040B-XHL-T has eight pins arranged as follows:

┌───┬───┐ │ 1 │ 8 │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ └───┴───┘

1. Chip Select (CS): Enables communication with the chip.
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): Allows write protection of the memory.
6. VCC: Power supply voltage.
7. Ground (GND): Common ground reference.
8. Hold (HOLD): Suspends ongoing operations temporarily.

Functional Features

• Byte-level Read/Write: The AT25040B-XHL-T allows individual byte-level read and write operations, providing flexibility in data manipulation.
• Sequential Read: It supports sequential read operations, enabling efficient retrieval of consecutive data bytes.
• Software Protection: The chip offers software-based write protection, preventing accidental modification of stored data.
• Hardware Protection: The Write Protect (WP) pin can be used to enable hardware-based write protection, adding an extra layer of security.

Advantages

• Compact size and low power consumption make it suitable for space-constrained and battery-powered devices.
• High endurance ensures reliable and long-lasting data storage.
• Wide operating voltage range allows compatibility with various systems.
• Fast operation speeds enhance overall system performance.
• Software and hardware write protection options provide flexibility and security.

Disadvantages

• Limited memory capacity may not be sufficient for applications requiring large amounts of data storage.
• Lack of built-in error correction mechanisms may result in data corruption in certain scenarios.
• Relatively higher cost compared to other non-volatile memory technologies like Flash memory.

Working Principles

The AT25040B-XHL-T utilizes EEPROM technology, which allows for electrically erasing and reprogramming of data. It stores information in a grid of memory cells, with each cell representing a bit of data. The data can be written or read by applying appropriate voltage levels to the memory cells through the SPI interface.

Application Field Plans

The AT25040B-XHL-T finds applications in various fields, including: - Microcontroller-based systems requiring non-volatile memory for program storage. - Automotive electronics for storing critical data like calibration settings and vehicle parameters. - Industrial equipment for configuration storage and firmware updates. - Consumer electronics such as smart appliances, wearables, and IoT devices.

Alternative Models

For those seeking alternatives to the AT25040B-XHL-T, the following models provide similar functionality: - AT25080B-XHL-T: 8 kilobits (1 kilobyte) capacity. - AT25160B-XHL-T: 16 kilobits (2 kilobytes) capacity. - AT25320B-XHL-T: 32 kilobits (4 kilobytes) capacity.

These alternative models offer increased memory capacity while maintaining compatibility with the same interface and package.

In conclusion, the AT25040B-XHL-T