25LC020AT-E/OT

Product Overview

Category: Integrated Circuit (IC)

Use: Non-volatile Serial EEPROM Memory

Characteristics: - Low-power CMOS technology - 2Kbits of memory organized as 256 x 8-bit - SPI compatible serial interface - Self-timed erase and write cycles - 1,000,000 erase/write cycles endurance - Data retention > 200 years - 64-byte page write buffer - Hardware write protection - Low power consumption - Small package size

Package: SOT-23-6

Essence: The 25LC020AT-E/OT is a small-sized, low-power, non-volatile memory IC that provides 2Kbits of storage capacity. It is commonly used for storing configuration data, calibration parameters, and other small amounts of non-volatile information in various electronic devices.

Packaging/Quantity: The 25LC020AT-E/OT is typically supplied in tape and reel packaging, with 3,000 units per reel.

Specifications

• Memory Size: 2Kbits (256 x 8-bit)
• Interface: SPI (Serial Peripheral Interface)
• Supply Voltage: 2.5V - 5.5V
• Operating Temperature Range: -40°C to +85°C
• Write Endurance: 1,000,000 cycles
• Data Retention: > 200 years
• Page Write Buffer: 64 bytes
• Package Type: SOT-23-6

Detailed Pin Configuration

The 25LC020AT-E/OT has a total of 6 pins arranged as follows:

┌───┬───┐ │ 1 │ 2 │ ───┼───┼───┼─── │ 3 │ 4 │ ───┼───┼───┼─── │ 5 │ 6 │ └───┴───┘

Pin Description: 1. Chip Select (CS): Active low input used to enable/disable the device. 2. Serial Clock (SCK): Input for synchronizing data transfer. 3. Serial Data Input (SI): Input for shifting in data during write operations. 4. Serial Data Output (SO): Output for shifting out data during read operations. 5. Write Protect (WP): Input for hardware write protection. 6. VCC: Supply voltage.

Functional Features

• Non-volatile memory: The 25LC020AT-E/OT retains stored data even when power is removed.
• SPI interface: It uses a serial peripheral interface for communication with the host microcontroller.
• Self-timed erase and write cycles: The IC handles the timing of erase and write operations, simplifying the integration process.
• Hardware write protection: The WP pin allows for hardware-based write protection, preventing accidental modification of stored data.
• Low power consumption: The IC operates at low power levels, making it suitable for battery-powered devices.
• Small package size: The SOT-23-6 package offers a compact form factor, ideal for space-constrained applications.

Advantages and Disadvantages

Advantages: - Non-volatile memory ensures data retention even without power. - Easy integration with microcontrollers using the SPI interface. - Self-timed erase and write cycles simplify programming. - Hardware write protection adds an extra layer of security. - Low power consumption extends battery life. - Compact package size allows for flexible placement in electronic designs.

Disadvantages: - Limited storage capacity (2Kbits) may not be sufficient for certain applications requiring larger memory sizes. - The SPI interface may require additional pins and circuitry on the microcontroller side.

Working Principles

The 25LC020AT-E/OT is based on non-volatile memory technology, specifically Electrically Erasable Programmable Read-Only Memory (EEPROM). It utilizes a serial peripheral interface (SPI) for communication with the host microcontroller. The IC supports self-timed erase and write cycles, simplifying the programming process.

During operation, the microcontroller sends commands and data to the 25LC020AT-E/OT via the SPI interface. The IC stores the received data in its non-volatile memory cells. The stored data remains intact even when power is removed. The WP pin can be used to enable hardware write protection, preventing accidental modification of the stored information.

Detailed Application Field Plans

The 25LC020AT-E/OT finds applications in various electronic devices that require small amounts of non-volatile memory storage. Some potential application fields include:

1. Embedded Systems: Used for storing configuration parameters, calibration data, and firmware updates in microcontroller-based systems.
2. Consumer Electronics: Employed in devices like smartw