Encyclopedia Entry: 25C160T-E/SN

Product Overview

Category

The 25C160T-E/SN belongs to the category of Serial Peripheral Interface (SPI) Flash Memory.

Use

This product is primarily used for storing and retrieving data in electronic devices such as microcontrollers, digital cameras, and consumer electronics.

Characteristics

• Non-volatile memory: The 25C160T-E/SN retains data even when power is disconnected.
• High storage capacity: This flash memory chip has a capacity of 16 megabits (2 megabytes).
• Fast data transfer: It supports high-speed SPI communication, enabling quick read and write operations.
• Low power consumption: The 25C160T-E/SN is designed to minimize energy usage, making it suitable for battery-powered devices.

Package and Essence

The 25C160T-E/SN is packaged in an industry-standard SOIC-8 package. Its essence lies in its ability to store and retrieve digital information reliably and efficiently.

Packaging/Quantity

This product is typically sold in reels containing multiple units. The exact quantity may vary depending on the manufacturer or supplier.

Specifications

• Memory Capacity: 16 megabits (2 megabytes)
• Interface: Serial Peripheral Interface (SPI)
• Operating Voltage: 2.7V - 3.6V
• Data Transfer Rate: Up to 10 MHz
• Erase/Write Endurance: 100,000 cycles
• Data Retention: Up to 20 years
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The 25C160T-E/SN features an 8-pin configuration with the following pin assignments:

1. Chip Select (/CS): Enables communication with the device when pulled low.
2. Serial Clock (SCK): Provides the clock signal for synchronous data transfer.
3. Serial Data Input (SI): Receives data from the microcontroller or host device.
4. Serial Data Output (SO): Transmits data from the flash memory to the microcontroller or host device.
5. Write Protect (/WP): When pulled low, prevents write operations on the memory.
6. Hold (/HOLD): Pauses ongoing operations without resetting the device.
7. VCC: Power supply voltage input.
8. Ground (GND): Common ground reference.

Functional Features

• Fast Read and Write Operations: The 25C160T-E/SN supports high-speed SPI communication, allowing for quick data transfer between the memory and the microcontroller.
• Flexible Erase and Write Options: This flash memory chip provides sector-based erase and byte/page-based write operations, offering flexibility in managing data storage.
• Hardware and Software Protection: It features a write protect pin (/WP) that can be used to prevent accidental modification of stored data. Additionally, software protection mechanisms can be implemented to enhance security.
• Reliable Data Retention: The 25C160T-E/SN ensures data integrity with a long data retention period of up to 20 years.

Advantages and Disadvantages

Advantages

• High storage capacity for various applications.
• Fast data transfer rate enables efficient read and write operations.
• Low power consumption makes it suitable for battery-powered devices.
• Flexible erase and write options provide versatility in data management.
• Reliable data retention ensures long-term integrity.

Disadvantages

• Limited storage capacity compared to higher-capacity flash memory chips.
• Higher cost per megabyte compared to larger capacity options.
• Requires an external microcontroller or host device for operation.

Working Principles

The 25C160T-E/SN operates based on the Serial Peripheral Interface (SPI) protocol. It communicates with a microcontroller or host device using a synchronous serial interface, where data is transferred in a sequential manner. The chip select (/CS) pin enables communication, while the serial clock (SCK) synchronizes the data transfer. The serial data input (SI) receives commands and data from the microcontroller, and the serial data output (SO) transmits data back to the microcontroller.

Detailed Application Field Plans

The 25C160T-E/SN finds applications in various electronic devices that require non-volatile memory for data storage. Some potential application fields include: - Microcontrollers and embedded systems - Digital cameras and imaging devices - Set-top boxes and multimedia players - Automotive electronics - Industrial control systems

Alternative Models

• 25C320: A higher-capacity variant with 32 megabits (4 megabytes) of storage.
• 25C080: A lower-capacity variant with 8 megabits (1 megabyte) of storage.
• 25C640: A higher-capacity variant with 64 megabits (8 megabytes) of storage.

These alternative models offer different storage capacities to cater to specific