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25LC256-I/P

Name: 25LC256-I/P
Rating: 4.7 (12 reviews)

IC EEPROM 256KBIT SPI 10MHZ 8DIP

メーカー
Mfr。パート #25LC256-I/P
パッケージ PDIP-8
データシート 25LC256-I/P DataSheet
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仕様

Package	Tube
ProductStatus	Active
MemoryType	Non-Volatile
MemoryFormat	EEPROM
Technology	EEPROM
MemorySize	256Kb (32K x 8)
MemoryInterface	SPI
ClockFrequency	10 MHz
WriteCycleTime-WordPage	5ms
Voltage-Supply	2.5V ~ 5.5V
OperatingTemperature	-40°C ~ 85°C (TA)
MountingType	Through Hole
Package/Case	8-DIP (0.300, 7.62mm)

概要

Description

The 25LC256-I/P is a serial EEPROM (Electrically Erasable Programmable Read-Only Memory) chip manufactured by Microchip Technology. It features a 256 Kbit (32 Kbytes) memory capacity, organized as 32 pages of 16 bytes each. The device operates using the SPI (Serial Peripheral Interface) protocol, allowing for high-speed data transfer and flexible communication with microcontrollers.
Key specifications include a wide voltage range (2.5V to 5.5V), low power consumption, and fast read/write speeds (up to 8 MHz). The 25LC256-I/P supports various operations, including data storage, retrieval, and byte/page programming, with a typical endurance of 1 million write cycles and a data retention period of up to 100 years.
This EEPROM is commonly used in applications requiring non-volatile memory, such as data logging, configuration storage, and firmware updates in embedded systems. Its compact size and reliable performance make it suitable for a variety of electronic devices.

Features

The 25LC256-I/P is a 256 Kbit (32 K x 8) serial EEPROM (Electrically Erasable Programmable Read-Only Memory) that features:
1. Interface: SPI (Serial Peripheral Interface) for easy communication with microcontrollers.
2. Voltage Range: Operates between 2.5V to 5.5V, allowing compatibility with various systems.
3. Speed: Supports clock speeds up to 10 MHz for fast data transfer.
4. Memory Organization: 32,768 x 8 bits, allowing for efficient data storage and retrieval.
5. Endurance: Capable of withstanding up to 1 million write cycles per memory cell.
6. Data Retention: Provides data retention of up to 100 years at 25°C.
7. Write Protection: Features hardware and software write protection mechanisms.
8. Low Power Consumption: Consumes low power, making it suitable for battery-operated devices.
9. Packages: Available in various packages including DIP, SOIC, and TSSOP for flexible design options.
These features make the 25LC256-I/P ideal for applications requiring reliable non-volatile storage.

Package

The 25LC256-I/P is packaged in an 8-pin PDIP (Plastic Dual In-line Package) format, which is suitable for through-hole mounting on printed circuit boards.

Pinout

The 25LC256-I/P is a 256 Kbit (32 K x 8) serial EEPROM from Microchip Technology, packaged in an 8-pin DIP. The pin count is 8, and the pin functions are as follows:
1. CS (Chip Select): Active low input that enables the device.
2. SI (Serial Input): Data input pin for serial data.
3. SO (Serial Output): Data output pin for serial data.
4. SCK (Serial Clock): Clock input for synchronizing data transmission.
5. WP (Write Protect): Input to protect the EEPROM from write operations when high.
6. VSS (Ground): Ground reference for the device.
7. VCC (Power Supply): Supply voltage for operation (typically 2.5V to 5.5V).
8. NC (No Connect): Not connected internally; can be left floating.
The 25LC256-I/P supports SPI communication, allowing for efficient data read/write operations in embedded systems.

Manufacturer

The manufacturer of the 25LC256-I/P is Microchip Technology Inc. Microchip is a leading provider of microcontroller, mixed-signal, analog, and Flash-IP solutions. Founded in 1989, the company specializes in providing a wide range of semiconductor products, including memory devices, microcontrollers, and development tools for various applications. Microchip serves diverse industries such as automotive, industrial, consumer electronics, and communications, offering reliable and cost-effective solutions for embedded system design. The 25LC256-I/P is a 256 Kbit EEPROM (Electrically Erasable Programmable Read-Only Memory) device used for data storage in various electronic applications.

Application

The 25LC256-I/P is a 256K-bit EEPROM suitable for various applications, including data storage in consumer electronics, industrial automation, and automotive systems. It's used for firmware storage, configuration settings, calibration data, and logging important parameters in devices like sensors, microcontrollers, and communication equipment. Its serial interface makes it ideal for space-constrained designs and low-power applications.

Equivalent

Equivalent products to the 25LC256-I/P chip include the 25AA256, 25LC256, and 25LC256A from Microchip, as well as similar EEPROMs from other manufacturers like the ST M95640 and AT25DF256 from Microchip. When selecting an equivalent, ensure it meets the same specifications, such as memory size and interface compatibility.