25LC320A-I/S16K

Product Overview

Category

The 25LC320A-I/S16K 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, sensors, and other embedded systems.

Characteristics

• Non-volatile: The 25LC320A-I/S16K retains data even when power is removed.
• High storage capacity: It has a storage capacity of 32 kilobits (4 kilobytes).
• Serial interface: The chip communicates using a serial protocol, making it easy to integrate into different systems.
• Low power consumption: It operates at low power levels, making it suitable for battery-powered devices.
• High endurance: The EEPROM supports a high number of read/write cycles, ensuring long-term reliability.

Package

The 25LC320A-I/S16K is available in a small surface-mount package (S16K), which facilitates its integration into compact electronic designs.

Essence

The essence of the 25LC320A-I/S16K lies in its ability to provide reliable and non-volatile data storage in a compact form factor, making it ideal for space-constrained applications.

Packaging/Quantity

The chip is typically supplied in tape and reel packaging, with a quantity of 2500 units per reel.

Specifications

• Storage Capacity: 32 kilobits (4 kilobytes)
• Interface: Serial Peripheral Interface (SPI)
• Operating Voltage: 2.5V to 5.5V
• Maximum Clock Frequency: 10 MHz
• Write Endurance: 1 million cycles
• Data Retention: 200 years
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The 25LC320A-I/S16K has a total of 8 pins, which are assigned specific functions:

1. Chip Select (CS): Enables communication with the chip when pulled low.
2. Serial Clock (SCK): Provides the clock signal for data transfer.
3. Serial Data Input (SI): Used to input data into the chip.
4. Serial Data Output (SO): Outputs data from the chip during read operations.
5. Write Protect (WP): When pulled high, prevents write operations.
6. VCC: Power supply voltage (2.5V to 5.5V).
7. Ground (GND): Common ground reference.
8. Hold (HOLD): Pauses ongoing operations when pulled low.

Functional Features

• Byte-level Read/Write: Allows individual bytes to be read from or written to the memory.
• Sequential Read: Supports continuous reading of multiple bytes without requiring repeated address commands.
• Hardware Write Protection: The WP pin can be used to protect the memory from accidental writes.
• Software Write Protection: Configurable software protection options are available to prevent unauthorized writes.
• Self-Timed Programming: The chip handles internal timing for write and erase operations, simplifying system integration.
• Status Register: Provides information about the chip's operating status and write protection settings.

Advantages and Disadvantages

Advantages

• Compact form factor enables integration in space-constrained designs.
• High endurance ensures long-term reliability.
• Low power consumption extends battery life.
• Easy integration with various microcontrollers and embedded systems.
• Flexible write protection options provide security against unauthorized writes.

Disadvantages

• Limited storage capacity compared to larger EEPROM chips.
• Slower write speeds compared to other non-volatile memory technologies.
• Requires an external microcontroller or host device for operation.

Working Principles

The 25LC320A-I/S16K utilizes an electrically erasable and programmable memory technology. It stores data in a grid of memory cells, with each cell capable of holding one bit of information. The chip communicates with an external microcontroller or host device using the Serial Peripheral Interface (SPI) protocol.

During write operations, the microcontroller sends commands and data to the chip, which then programs the memory cells accordingly. Reading data involves sending read commands to the chip, which retrieves the stored information and transmits it back to the microcontroller.

The chip's internal circuitry handles the timing and control signals required for programming and reading operations, simplifying the integration process.

Detailed Application Field Plans

The 25LC320A-I/S16K finds applications in various fields, including:

1. Automotive: Used for storing vehicle configuration data, firmware updates, and event logging.
2. Industrial Control Systems: Enables storage of calibration data, configuration parameters, and system logs.
3. Consumer Electronics: Utilized in devices such as smartwatches, fitness trackers, and remote controls for data storage purposes.
4. Internet of Things (IoT): Provides non-volatile memory for IoT devices,